/*
 * Dynamic Windows:
 *          A GTK like implementation of the MacOS GUI
 *
 * (C) 2003-2004 Brian Smith <dbsoft@technologist.com>
 *
 */
#include "dw.h"

static void _do_resize(Box *thisbox, int x, int y);

typedef struct _sighandler
{
   struct _sighandler   *next;
   ULONG message;
   HWND window;
   int id;
   void *signalfunction;
   void *data;

} SignalHandler;

SignalHandler *Root = NULL;

typedef struct
{
   ULONG message;
   char name[30];

} SignalList;

const Rect CreationRect = { 0, 0, 2000, 1000 };
WindowRef CreationWindow = 0;
ControlRef RootControl = 0;
int _dw_screen_width = 0, _dw_screen_height = 0, _dw_color_depth = 16;

/* List of signals and their equivilent MacOS event */
#define SIGNALMAX 15

SignalList SignalTranslate[SIGNALMAX] = {
   { nullEvent,       DW_SIGNAL_CONFIGURE },
   { keyUp,           DW_SIGNAL_KEY_PRESS },
   { mouseDown,       DW_SIGNAL_BUTTON_PRESS },
   { mouseUp,         DW_SIGNAL_BUTTON_RELEASE },
   { nullEvent,       DW_SIGNAL_MOTION_NOTIFY },
   { nullEvent,       DW_SIGNAL_DELETE },
   { updateEvt,       DW_SIGNAL_EXPOSE },
   { nullEvent,       DW_SIGNAL_CLICKED },
   { nullEvent,       DW_SIGNAL_ITEM_ENTER },
   { nullEvent,       DW_SIGNAL_ITEM_CONTEXT },
   { nullEvent,       DW_SIGNAL_LIST_SELECT },
   { nullEvent,       DW_SIGNAL_ITEM_SELECT },
   { activateEvt,     DW_SIGNAL_SET_FOCUS },
   { nullEvent,       DW_SIGNAL_VALUE_CHANGED },
   { nullEvent,       DW_SIGNAL_SWITCH_PAGE }
};

/* This function adds a signal handler callback into the linked list.
 */
void _new_signal(ULONG message, HWND window, int id, void *signalfunction, void *data)
{
   SignalHandler *new = malloc(sizeof(SignalHandler));

   new->message = message;
   new->window = window;
   new->id = id;
   new->signalfunction = signalfunction;
   new->data = data;
   new->next = NULL;

   if (!Root)
      Root = new;
   else
   {
      SignalHandler *prev = NULL, *tmp = Root;
      while(tmp)
      {
         if(tmp->message == message &&
            tmp->window == window &&
            tmp->signalfunction == signalfunction)
         {
            tmp->data = data;
            free(new);
            return;
         }
         prev = tmp;
         tmp = tmp->next;
      }
      if(prev)
         prev->next = new;
      else
         Root = new;
   }
}

/* Finds the message number for a given signal name */
static ULONG _findsigmessage(char *signame)
{
   int z;

   for(z=0;z<SIGNALMAX;z++)
   {
      if(strcasecmp(signame, SignalTranslate[z].name) == 0)
         return SignalTranslate[z].message;
   }
   return 0L;
}

/* Creates a Pascal string from a C string */
char *_CToPascal(unsigned char *ptr, char *cstring)
{
   unsigned char len = (char)strlen(cstring);

   ptr[0] = len;
   memcpy(&ptr[1], cstring, len+1);
   return (char *)ptr;
}

#define CToPascal(a) _CToPascal(alloca(strlen(a)+2), a)

static void *_get_window_pointer(HWND handle)
{
   void *ret = NULL;

   if(IsValidWindowRef((WindowRef)handle))
      GetWindowProperty((WindowRef)handle, 0, 'user', sizeof(void *), NULL, &ret);
   else
      GetControlProperty(handle, 0, 'user', sizeof(void *), NULL, &ret);
   return ret;
}

static void _set_window_pointer(HWND handle, void *pointer)
{
   if(IsValidWindowRef((WindowRef)handle))
      SetWindowProperty((WindowRef)handle, 0, 'user', sizeof(void *), &pointer);
   else
      SetControlProperty(handle, 0, 'user', sizeof(void *), &pointer);
}

/* This function will recursively search a box and add up the total height of it */
static void _count_size(HWND box, int type, int *xsize, int *xorigsize)
{
   int size = 0, origsize = 0, z;
   Box *tmp = _get_window_pointer(box);

   if(!tmp)
   {
      *xsize = *xorigsize = 0;
      return;
   }

   if(type == tmp->type)
   {
      /* If the box is going in the direction we want, then we
       * return the entire sum of the items.
       */
      for(z=0;z<tmp->count;z++)
      {
         if(tmp->items[z].type == TYPEBOX)
         {
            int s, os;

            _count_size(tmp->items[z].hwnd, type, &s, &os);
            size += s;
            origsize += os;
         }
         else
         {
            size += (type == DW_HORZ ? tmp->items[z].width : tmp->items[z].height);
            origsize += (type == DW_HORZ ? tmp->items[z].origwidth : tmp->items[z].origheight);
         }
      }
   }
   else
   {
      /* If the box is not going in the direction we want, then we only
       * want to return the maximum value.
       */
      int tmpsize = 0, tmporigsize = 0;

      for(z=0;z<tmp->count;z++)
      {
         if(tmp->items[z].type == TYPEBOX)
            _count_size(tmp->items[z].hwnd, type, &tmpsize, &tmporigsize);
         else
         {
            tmpsize = (type == DW_HORZ ? tmp->items[z].width : tmp->items[z].height);
            tmporigsize = (type == DW_HORZ ? tmp->items[z].origwidth : tmp->items[z].origheight);
         }

         if(tmpsize > size)
            size = tmpsize;
      }
   }

   *xsize = size;
   *xorigsize = origsize;
}

/* This function calculates how much space the widgets and boxes require
 * and does expansion as necessary.
 */
static int _resize_box(Box *thisbox, int *depth, int x, int y, int *usedx, int *usedy,
            int pass, int *usedpadx, int *usedpady)
{
   int z, currentx = 0, currenty = 0;
   int uymax = 0, uxmax = 0;
   int upymax = 0, upxmax = 0;
   /* Used for the SIZEEXPAND */
   int nux = *usedx, nuy = *usedy;
   int nupx = *usedpadx, nupy = *usedpady;

   (*usedx) += (thisbox->pad * 2);
   (*usedy) += (thisbox->pad * 2);

   for(z=0;z<thisbox->count;z++)
   {
      if(thisbox->items[z].type == TYPEBOX)
      {
         int initialx, initialy;
         Box *tmp = _get_window_pointer(thisbox->items[z].hwnd);

         initialx = x - (*usedx);
         initialy = y - (*usedy);

         if(tmp)
         {
            int newx, newy;
            int nux = *usedx, nuy = *usedy;
            int upx = *usedpadx + (tmp->pad*2), upy = *usedpady + (tmp->pad*2);

            /* On the second pass we know how big the box needs to be and how
             * much space we have, so we can calculate a ratio for the new box.
             */
            if(pass == 2)
            {
               int deep = *depth + 1;

               _resize_box(tmp, &deep, x, y, &nux, &nuy, 1, &upx, &upy);

               tmp->upx = upx - *usedpadx;
               tmp->upy = upy - *usedpady;

               newx = x - nux;
               newy = y - nuy;

               tmp->width = thisbox->items[z].width = initialx - newx;
               tmp->height = thisbox->items[z].height = initialy - newy;

               tmp->parentxratio = thisbox->xratio;
               tmp->parentyratio = thisbox->yratio;

               tmp->parentpad = tmp->pad;

               /* Just in case */
               tmp->xratio = thisbox->xratio;
               tmp->yratio = thisbox->yratio;

               if(thisbox->type == DW_VERT)
               {
                  if((thisbox->items[z].width-((thisbox->items[z].pad*2)+(tmp->pad*2)))!=0)
                     tmp->xratio = ((float)((thisbox->items[z].width * thisbox->xratio)-((thisbox->items[z].pad*2)+(tmp->pad*2))))/((float)(thisbox->items[z].width-((thisbox->items[z].pad*2)+(tmp->pad*2))));
               }
               else
               {
                  if((thisbox->items[z].width-tmp->upx)!=0)
                     tmp->xratio = ((float)((thisbox->items[z].width * thisbox->xratio)-tmp->upx))/((float)(thisbox->items[z].width-tmp->upx));
               }
               if(thisbox->type == DW_HORZ)
               {
                  if((thisbox->items[z].height-((thisbox->items[z].pad*2)+(tmp->pad*2)))!=0)
                     tmp->yratio = ((float)((thisbox->items[z].height * thisbox->yratio)-((thisbox->items[z].pad*2)+(tmp->pad*2))))/((float)(thisbox->items[z].height-((thisbox->items[z].pad*2)+(tmp->pad*2))));
               }
               else
               {
                  if((thisbox->items[z].height-tmp->upy)!=0)
                     tmp->yratio = ((float)((thisbox->items[z].height * thisbox->yratio)-tmp->upy))/((float)(thisbox->items[z].height-tmp->upy));
               }

               nux = *usedx; nuy = *usedy;
               upx = *usedpadx + (tmp->pad*2); upy = *usedpady + (tmp->pad*2);
            }

            (*depth)++;

            _resize_box(tmp, depth, x, y, &nux, &nuy, pass, &upx, &upy);

            (*depth)--;

            newx = x - nux;
            newy = y - nuy;

            tmp->minwidth = thisbox->items[z].width = initialx - newx;
            tmp->minheight = thisbox->items[z].height = initialy - newy;
         }
      }

      if(pass > 1 && *depth > 0)
      {
         if(thisbox->type == DW_VERT)
         {
            if((thisbox->minwidth-((thisbox->items[z].pad*2)+(thisbox->parentpad*2))) == 0)
               thisbox->items[z].xratio = 1.0;
            else
               thisbox->items[z].xratio = ((float)((thisbox->width * thisbox->parentxratio)-((thisbox->items[z].pad*2)+(thisbox->parentpad*2))))/((float)(thisbox->minwidth-((thisbox->items[z].pad*2)+(thisbox->parentpad*2))));
         }
         else
         {
            if(thisbox->minwidth-thisbox->upx == 0)
               thisbox->items[z].xratio = 1.0;
            else
               thisbox->items[z].xratio = ((float)((thisbox->width * thisbox->parentxratio)-thisbox->upx))/((float)(thisbox->minwidth-thisbox->upx));
         }

         if(thisbox->type == DW_HORZ)
         {
            if((thisbox->minheight-((thisbox->items[z].pad*2)+(thisbox->parentpad*2))) == 0)
               thisbox->items[z].yratio = 1.0;
            else
               thisbox->items[z].yratio = ((float)((thisbox->height * thisbox->parentyratio)-((thisbox->items[z].pad*2)+(thisbox->parentpad*2))))/((float)(thisbox->minheight-((thisbox->items[z].pad*2)+(thisbox->parentpad*2))));
         }
         else
         {
            if(thisbox->minheight-thisbox->upy == 0)
               thisbox->items[z].yratio = 1.0;
            else
               thisbox->items[z].yratio = ((float)((thisbox->height * thisbox->parentyratio)-thisbox->upy))/((float)(thisbox->minheight-thisbox->upy));
         }

         if(thisbox->items[z].type == TYPEBOX)
         {
            Box *tmp = _get_window_pointer(thisbox->items[z].hwnd);

            if(tmp)
            {
               tmp->parentxratio = thisbox->items[z].xratio;
               tmp->parentyratio = thisbox->items[z].yratio;
            }
         }
      }
      else
      {
         thisbox->items[z].xratio = thisbox->xratio;
         thisbox->items[z].yratio = thisbox->yratio;
      }

      if(thisbox->type == DW_VERT)
      {
         if((thisbox->items[z].width + (thisbox->items[z].pad*2)) > uxmax)
            uxmax = (thisbox->items[z].width + (thisbox->items[z].pad*2));
         if(thisbox->items[z].hsize != SIZEEXPAND)
         {
            if(((thisbox->items[z].pad*2) + thisbox->items[z].width) > upxmax)
               upxmax = (thisbox->items[z].pad*2) + thisbox->items[z].width;
         }
         else
         {
            if(thisbox->items[z].pad*2 > upxmax)
               upxmax = thisbox->items[z].pad*2;
         }
      }
      else
      {
         if(thisbox->items[z].width == -1)
         {
            /* figure out how much space this item requires */
            /* thisbox->items[z].width = */
         }
         else
         {
            (*usedx) += thisbox->items[z].width + (thisbox->items[z].pad*2);
            if(thisbox->items[z].hsize != SIZEEXPAND)
               (*usedpadx) += (thisbox->items[z].pad*2) + thisbox->items[z].width;
            else
               (*usedpadx) += thisbox->items[z].pad*2;
         }
      }
      if(thisbox->type == DW_HORZ)
      {
         if((thisbox->items[z].height + (thisbox->items[z].pad*2)) > uymax)
            uymax = (thisbox->items[z].height + (thisbox->items[z].pad*2));
         if(thisbox->items[z].vsize != SIZEEXPAND)
         {
            if(((thisbox->items[z].pad*2) + thisbox->items[z].height) > upymax)
               upymax = (thisbox->items[z].pad*2) + thisbox->items[z].height;
         }
         else
         {
            if(thisbox->items[z].pad*2 > upymax)
               upymax = thisbox->items[z].pad*2;
         }
      }
      else
      {
         if(thisbox->items[z].height == -1)
         {
            /* figure out how much space this item requires */
            /* thisbox->items[z].height = */
         }
         else
         {
            (*usedy) += thisbox->items[z].height + (thisbox->items[z].pad*2);
            if(thisbox->items[z].vsize != SIZEEXPAND)
               (*usedpady) += (thisbox->items[z].pad*2) + thisbox->items[z].height;
            else
               (*usedpady) += thisbox->items[z].pad*2;
         }
      }
   }

   (*usedx) += uxmax;
   (*usedy) += uymax;
   (*usedpadx) += upxmax;
   (*usedpady) += upymax;

   currentx += thisbox->pad;
   currenty += thisbox->pad;

   /* The second pass is for expansion and actual placement. */
   if(pass > 1)
   {
      /* Any SIZEEXPAND items should be set to uxmax/uymax */
      for(z=0;z<thisbox->count;z++)
      {
         if(thisbox->items[z].hsize == SIZEEXPAND && thisbox->type == DW_VERT)
            thisbox->items[z].width = uxmax-(thisbox->items[z].pad*2);
         if(thisbox->items[z].vsize == SIZEEXPAND && thisbox->type == DW_HORZ)
            thisbox->items[z].height = uymax-(thisbox->items[z].pad*2);
         /* Run this code segment again to finalize the sized after setting uxmax/uymax values. */
         if(thisbox->items[z].type == TYPEBOX)
         {
            Box *tmp = _get_window_pointer(thisbox->items[z].hwnd);

            if(tmp)
            {
               if(*depth > 0)
               {
                  float calcval;

                  if(thisbox->type == DW_VERT)
                  {
                     calcval = (float)(tmp->minwidth-((thisbox->items[z].pad*2)+(thisbox->pad*2)));
                     if(calcval == 0.0)
                        tmp->xratio = thisbox->xratio;
                     else
                        tmp->xratio = ((float)((thisbox->items[z].width * thisbox->xratio)-((thisbox->items[z].pad*2)+(thisbox->pad*2))))/calcval;
                     tmp->width = thisbox->items[z].width;
                  }
                  if(thisbox->type == DW_HORZ)
                  {
                     calcval = (float)(tmp->minheight-((thisbox->items[z].pad*2)+(thisbox->pad*2)));
                     if(calcval == 0.0)
                        tmp->yratio = thisbox->yratio;
                     else
                        tmp->yratio = ((float)((thisbox->items[z].height * thisbox->yratio)-((thisbox->items[z].pad*2)+(thisbox->pad*2))))/calcval;
                     tmp->height = thisbox->items[z].height;
                  }
               }

               (*depth)++;

               _resize_box(tmp, depth, x, y, &nux, &nuy, 3, &nupx, &nupy);

               (*depth)--;

            }
         }
      }

      for(z=0;z<(thisbox->count);z++)
      {
         int height = thisbox->items[z].height;
         int width = thisbox->items[z].width;
         int pad = thisbox->items[z].pad;
         HWND handle = thisbox->items[z].hwnd;
         int vectorx, vectory;

         /* When upxmax != pad*2 then ratios are incorrect. */
         vectorx = (int)((width*thisbox->items[z].xratio)-width);
         vectory = (int)((height*thisbox->items[z].yratio)-height);

         if(width > 0 && height > 0)
         {
            /* This is a hack to fix rounding of the sizing */
            if(*depth == 0)
            {
               vectorx++;
               vectory++;
            }

            /* If this item isn't going to expand... reset the vectors to 0 */
            if(thisbox->items[z].vsize != SIZEEXPAND)
               vectory = 0;
            if(thisbox->items[z].hsize != SIZEEXPAND)
               vectorx = 0;

            MoveControl(handle, currentx + pad, currenty + pad);
            SizeControl(handle, width + vectorx, height + vectory);

            if(thisbox->type == DW_HORZ)
               currentx += width + vectorx + (pad * 2);
            if(thisbox->type == DW_VERT)
               currenty += height + vectory + (pad * 2);
         }
      }
   }
   return 0;
}

static void _do_resize(Box *thisbox, int x, int y)
{
   if(x != 0 && y != 0)
   {
      if(thisbox)
      {
         int usedx = 0, usedy = 0, usedpadx = 0, usedpady = 0, depth = 0;

         _resize_box(thisbox, &depth, x, y, &usedx, &usedy, 1, &usedpadx, &usedpady);

         if(usedx-usedpadx == 0 || usedy-usedpady == 0)
            return;

         thisbox->xratio = ((float)(x-usedpadx))/((float)(usedx-usedpadx));
         thisbox->yratio = ((float)(y-usedpady))/((float)(usedy-usedpady));

         usedx = usedy = usedpadx = usedpady = depth = 0;

         _resize_box(thisbox, &depth, x, y, &usedx, &usedy, 2, &usedpadx, &usedpady);
      }
   }
}

static void _changebox(Box *thisbox, int percent, int type)
{
   int z;

   for(z=0;z<thisbox->count;z++)
   {
      if(thisbox->items[z].type == TYPEBOX)
      {
         Box *tmp = _get_window_pointer(thisbox->items[z].hwnd);
         _changebox(tmp, percent, type);
      }
      else
      {
         if(type == DW_HORZ)
         {
            if(thisbox->items[z].hsize == SIZEEXPAND)
               thisbox->items[z].width = (int)(((float)thisbox->items[z].origwidth) * (((float)percent)/((float)100.0)));
         }
         else
         {
            if(thisbox->items[z].vsize == SIZEEXPAND)
               thisbox->items[z].height = (int)(((float)thisbox->items[z].origheight) * (((float)percent)/((float)100.0)));
         }
      }
   }
}

static pascal OSErr QuitAppleEventHandler(const AppleEvent *appleEvt, AppleEvent* reply, UInt32 refcon)
{
   ExitToShell();
}

/*
 * Initializes the Dynamic Windows engine.
 * Parameters:
 *           newthread: True if this is the only thread.
 *                      False if there is already a message loop running.
 */
int API dw_init(int newthread, int argc, char *argv[])
{
   GDHandle gd = GetMainDevice();

   FlushEvents(everyEvent, 0);
   InitCursor();
   CreateNewWindow (kDocumentWindowClass, kWindowOpaqueForEventsAttribute,
                &CreationRect, &CreationWindow);
   CreateRootControl(CreationWindow, &RootControl);
   HideWindow(CreationWindow);
   if(AEInstallEventHandler(kCoreEventClass, kAEQuitApplication, NewAEEventHandlerUPP(QuitAppleEventHandler), 0, false) != noErr)
      ExitToShell();

   /* Save the height, width and color depth */
   _dw_screen_height = (*gd)->gdRect.bottom - (*gd)->gdRect.top;
   _dw_screen_width = (*gd)->gdRect.right - (*gd)->gdRect.left;
   _dw_color_depth = (*(*gd)->gdPMap)->cmpSize * (*(*gd)->gdPMap)->cmpCount;
   return 0;
}

/*
 * Runs a message loop for Dynamic Windows.
 */
void API dw_main(void)
{
   RunApplicationEventLoop();
}

/*
 * Runs a message loop for Dynamic Windows, for a period of milliseconds.
 * Parameters:
 *           milliseconds: Number of milliseconds to run the loop for.
 */
void API dw_main_sleep(int milliseconds)
{
   double start = (double)clock();

   while(((((clock() - start) / CLOCKS_PER_SEC)/1000)) <= milliseconds)
   {
      RunCurrentEventLoop(1);
   }
}

/*
 * Processes a single message iteration and returns.
 */
void API dw_main_iteration(void)
{
   EventRecord eventStructure;

   if(WaitNextEvent(everyEvent, &eventStructure, 0, 0))
      RunCurrentEventLoop(0);
}

/*
 * Free's memory allocated by dynamic windows.
 * Parameters:
 *           ptr: Pointer to dynamic windows allocated
 *                memory to be free()'d.
 */
void API dw_free(void *ptr)
{
   free(ptr);
}

/*
 * Allocates and initializes a dialog struct.
 * Parameters:
 *           data: User defined data to be passed to functions.
 */
DWDialog * API dw_dialog_new(void *data)
{
   DWDialog *tmp = malloc(sizeof(DWDialog));

   tmp->eve = dw_event_new();
   dw_event_reset(tmp->eve);
   tmp->data = data;
   tmp->done = FALSE;
   tmp->result = NULL;

   return tmp;
}

/*
 * Accepts a dialog struct and returns the given data to the
 * initial called of dw_dialog_wait().
 * Parameters:
 *           dialog: Pointer to a dialog struct aquired by dw_dialog_new).
 *           result: Data to be returned by dw_dialog_wait().
 */
int API dw_dialog_dismiss(DWDialog *dialog, void *result)
{
   dialog->result = result;
   dw_event_post(dialog->eve);
   dialog->done = TRUE;
   return 0;
}

/*
 * Accepts a dialog struct waits for dw_dialog_dismiss() to be
 * called by a signal handler with the given dialog struct.
 * Parameters:
 *           dialog: Pointer to a dialog struct aquired by dw_dialog_new).
 */
void * API dw_dialog_wait(DWDialog *dialog)
{
   void *tmp;

   while(!dialog->done)
   {
      RunCurrentEventLoop(180);
   }
   dw_event_close(&dialog->eve);
   tmp = dialog->result;
   free(dialog);
   return tmp;
}


/*
 * Displays a Message Box with given text and title..
 * Parameters:
 *           title: The title of the message box.
 *           format: printf style format string.
 *           ...: Additional variables for use in the format.
 */
int API dw_messagebox(char *title, int flags, char *format, ...)
{
   va_list args;
   char outbuf[1024];
   AlertStdCFStringAlertParamRec param;
   DialogRef dialog;
   CFStringRef cftext, cftitle;
   DialogItemIndex item;
   int ret = DW_MB_RETURN_OK;
   AlertType alert = kAlertPlainAlert;

   va_start(args, format);
   vsprintf(outbuf, format, args);
   va_end(args);

   GetStandardAlertDefaultParams(&param, kStdCFStringAlertVersionOne);
   param.movable = TRUE;
   param.helpButton = FALSE;
   if(flags & DW_MB_INFORMATION)
      alert = kAlertNoteAlert;
   else if(flags & DW_MB_ERROR)
      alert = kAlertStopAlert;
   else if(flags & DW_MB_WARNING)
      alert = kAlertCautionAlert;

   if(flags & DW_MB_OK || flags & DW_MB_OKCANCEL)
   {
      param.defaultText = CFSTR("Ok");
      param.cancelText = flags & DW_MB_OK ? 0 : CFSTR("Cancel");
   }
   else
   {
      param.defaultText = CFSTR("Yes");
      param.cancelText = CFSTR("No");
      param.otherText = CFSTR("Cancel");
   }
   cftext = CFStringCreateWithCString(NULL, outbuf, kCFStringEncodingDOSLatinUS);
   cftitle = CFStringCreateWithCString(NULL, title, kCFStringEncodingDOSLatinUS);
   if(CreateStandardAlert(alert, cftext, cftitle, &param, &dialog) == noErr)
   {
      if(RunStandardAlert(dialog, NULL, &item) == noErr)
      {
         if(item == kAlertStdAlertOtherButton)
            ret = DW_MB_RETURN_CANCEL;
         else if(item == kAlertStdAlertCancelButton)
         {
            if(flags & DW_MB_OK || flags & DW_MB_OKCANCEL)
               ret = DW_MB_RETURN_CANCEL;
            else
               ret = DW_MB_RETURN_NO;
         }
         else if(item == kAlertStdAlertOKButton)
         {
            if(flags & DW_MB_YESNO || flags & DW_MB_YESNOCANCEL)
               ret = DW_MB_RETURN_YES;
         }
      }
   }
   CFRelease(cftext);
   CFRelease(cftitle);
   return ret;
}

/*
 * Makes the window topmost.
 * Parameters:
 *           handle: The window handle to make topmost.
 */
int API dw_window_raise(HWND handle)
{
   BringToFront((WindowRef)handle);
   return 0;
}

/*
 * Makes the window bottommost.
 * Parameters:
 *           handle: The window handle to make bottommost.
 */
int API dw_window_lower(HWND handle)
{
   return 0;
}

/*
 * Makes the window visible.
 * Parameters:
 *           handle: The window handle to make visible.
 */
int API dw_window_show(HWND handle)
{
   ShowWindow((WindowRef)handle);
   return 0;
}

/*
 * Minimizes or Iconifies a top-level window.
 * Parameters:
 *           handle: The window handle to minimize.
 */
int API dw_window_minimize(HWND handle)
{
   return 0;
}

/*
 * Makes the window invisible.
 * Parameters:
 *           handle: The window handle to make visible.
 */
int API dw_window_hide(HWND handle)
{
   HideWindow((WindowRef)handle);
   return 0;
}

/*
 * Destroys a window and all of it's children.
 * Parameters:
 *           handle: The window handle to destroy.
 */
int API dw_window_destroy(HWND handle)
{
   DisposeWindow((WindowRef)handle);
   return 0;
}

/* Causes entire window to be invalidated and redrawn.
 * Parameters:
 *           handle: Toplevel window handle to be redrawn.
 */
void API dw_window_redraw(HWND handle)
{
}

/*
 * Changes a window's parent to newparent.
 * Parameters:
 *           handle: The window handle to destroy.
 *           newparent: The window's new parent window.
 */
void API dw_window_reparent(HWND handle, HWND newparent)
{
}

/*
 * Sets the font used by a specified window (widget) handle.
 * Parameters:
 *          handle: The window (widget) handle.
 *          fontname: Name and size of the font in the form "size.fontname"
 */
int API dw_window_set_font(HWND handle, char *fontname)
{
   return 0;
}

/*
 * Sets the colors used by a specified window (widget) handle.
 * Parameters:
 *          handle: The window (widget) handle.
 *          fore: Foreground color in DW_RGB format or a default color index.
 *          back: Background color in DW_RGB format or a default color index.
 */
int API dw_window_set_color(HWND handle, ULONG fore, ULONG back)
{
   return 0;
}

/*
 * Sets the font used by a specified window (widget) handle.
 * Parameters:
 *          handle: The window (widget) handle.
 *          border: Size of the window border in pixels.
 */
int API dw_window_set_border(HWND handle, int border)
{
   return 0;
}

/*
 * Captures the mouse input to this window.
 * Parameters:
 *       handle: Handle to receive mouse input.
 */
void API dw_window_capture(HWND handle)
{
}

/*
 * Releases previous mouse capture.
 */
void API dw_window_release(void)
{
}

/*
 * Tracks this window movement.
 * Parameters:
 *       handle: Handle to frame to be tracked.
 */
void API dw_window_track(HWND handle)
{
}

/*
 * Changes the appearance of the mouse pointer.
 * Parameters:
 *       handle: Handle to widget for which to change.
 *       cursortype: ID of the pointer you want.
 */
void API dw_window_set_pointer(HWND handle, int pointertype)
{
   SetCursor(*GetCursor(pointertype));
}

/*
 * Create a new Window Frame.
 * Parameters:
 *       owner: The Owner's window handle or HWND_DESKTOP.
 *       title: The Window title.
 *       flStyle: Style flags, see the PM reference.
 */
HWND API dw_window_new(HWND hwndOwner, char *title, ULONG flStyle)
{
   WindowRef hwnd = 0;
   ControlRef rootcontrol = 0;

   CreateNewWindow (kDocumentWindowClass, flStyle | kWindowStandardHandlerAttribute,
                &CreationRect, &hwnd);
   CreateRootControl(hwnd, &rootcontrol);
   dw_window_set_text((HWND)hwnd, title);
   return (HWND)hwnd;
}

/*
 * Create a new Box to be packed.
 * Parameters:
 *       type: Either DW_VERT (vertical) or DW_HORZ (horizontal).
 *       pad: Number of pixels to pad around the box.
 */
HWND API dw_box_new(int type, int pad)
{
        ControlRef hwnd = NewControl(CreationWindow, NULL, "",
                    true, kControlSupportsEmbedding | kControlHasSpecialBackground,
                    0, 1, kControlUserPaneProc, (SInt32) 0);
        return (HWND)hwnd;
}

/*
 * Create a new Group Box to be packed.
 * Parameters:
 *       type: Either DW_VERT (vertical) or DW_HORZ (horizontal).
 *       pad: Number of pixels to pad around the box.
 *       title: Text to be displayined in the group outline.
 */
HWND API dw_groupbox_new(int type, int pad, char *title)
{
   HWND hwnd = 0;
   CreateRadioGroupControl(CreationWindow, &CreationRect, &hwnd);
   return hwnd;
}

/*
 * Create a new MDI Frame to be packed.
 * Parameters:
 *       id: An ID to be used with dw_window_from_id or 0L.
 */
HWND API dw_mdi_new(unsigned long id)
{
   return 0;
}

/*
 * Create a bitmap object to be packed.
 * Parameters:
 *       id: An ID to be used with dw_window_from_id() or 0L.
 */
HWND API dw_bitmap_new(ULONG id)
{
   HWND hwnd = 0;
   CreateImageWellControl(CreationWindow, &CreationRect, NULL, &hwnd);
   return hwnd;
}

/*
 * Create a notebook object to be packed.
 * Parameters:
 *       id: An ID to be used for getting the resource from the
 *           resource file.
 */
HWND API dw_notebook_new(ULONG id, int top)
{
   HWND hwnd = 0;
   CreateTabsControl(CreationWindow, &CreationRect, kControlTabSizeSmall, kControlTabDirectionNorth, 1, NULL, &hwnd);
   return hwnd;
}

char _removetilde(char *dest, char *src)
{
   int z, cur=0;
   char accel = '\0';

   for(z=0;z<strlen(src);z++)
   {
      if(src[z] != '~')
      {
         dest[cur] = src[z];
         cur++;
      }
      else
         accel = src[z+1];
   }
   dest[cur] = 0;
   return accel;
}

/*
 * Create a menu object to be popped up.
 * Parameters:
 *       id: An ID to be used for getting the resource from the
 *           resource file.
 */
HMENUI API dw_menu_new(ULONG id)
{
   return NewMenu(id % 256, "");
}

/*
 * Create a menubar on a window.
 * Parameters:
 *       location: Handle of a window frame to be attached to.
 */
HMENUI API dw_menubar_new(HWND location)
{
   return (HMENUI)-1;
}

/*
 * Destroys a menu created with dw_menubar_new or dw_menu_new.
 * Parameters:
 *       menu: Handle of a menu.
 */
void API dw_menu_destroy(HMENUI *menu)
{
   DisposeMenu(*menu);
}

/*
 * Adds a menuitem or submenu to an existing menu.
 * Parameters:
 *       menu: The handle the the existing menu.
 *       title: The title text on the menu item to be added.
 *       id: An ID to be used for message passing.
 *       flags: Extended attributes to set on the menu.
 *       end: If TRUE memu is positioned at the end of the menu.
 *       check: If TRUE menu is "check"able.
 *       submenu: Handle to an existing menu to be a submenu or NULL.
 */
HWND API dw_menu_append_item(HMENUI menux, char *title, ULONG id, ULONG flags, int end, int check, HMENUI submenu)
{
   char accel, *buf, *tempbuf = alloca(strlen(title)+1);

    accel = _removetilde(tempbuf, title);
   buf = CToPascal(tempbuf);

   if(menux == (HMENUI)-1)
   {
      SetMenuTitle(submenu, buf);
      InsertMenu(submenu, 0);
   }
   else
   {
      /* Add a separator if requested */
      if(!title || !*title)
         AppendMenu(menux, "\001-");
      else
      {
         MenuItemIndex item;
         CFStringRef cftext = CFStringCreateWithCString(NULL, tempbuf, kCFStringEncodingDOSLatinUS);

         AppendMenuItemTextWithCFString(menux, cftext, 0, 0, &item);
         CFRelease(cftext);

         id = item;
         if(accel)
         {
            SetItemCmd(menux, item, accel);
            SetMenuItemModifiers(menux, item, kMenuOptionModifier);
         }
      }
   }
   DrawMenuBar();
   return (HWND)id;
}

/*
 * Sets the state of a menu item check.
 * Parameters:
 *       menu: The handle the the existing menu.
 *       id: Menuitem id.
 *       check: TRUE for checked FALSE for not checked.
 */
void API dw_menu_item_set_check(HMENUI menux, unsigned long id, int check)
{
   CheckMenuItem(menux, id, check);
}

/*
 * Pops up a context menu at given x and y coordinates.
 * Parameters:
 *       menu: The handle the the existing menu.
 *       parent: Handle to the window initiating the popup.
 *       x: X coordinate.
 *       y: Y coordinate.
 */
void API dw_menu_popup(HMENUI *menu, HWND parent, int x, int y)
{
}

/*
 * Returns the current X and Y coordinates of the mouse pointer.
 * Parameters:
 *       x: Pointer to variable to store X coordinate.
 *       y: Pointer to variable to store Y coordinate.
 */
void API dw_pointer_query_pos(long *x, long *y)
{
}

/*
 * Sets the X and Y coordinates of the mouse pointer.
 * Parameters:
 *       x: X coordinate.
 *       y: Y coordinate.
 */
void API dw_pointer_set_pos(long x, long y)
{
}


/*
 * Create a container object to be packed.
 * Parameters:
 *       id: An ID to be used for getting the resource from the
 *           resource file.
 */
HWND API dw_container_new(ULONG id, int multi)
{
   ListHandle hwnd = 0;
   Point CellSize;
   ListDefSpec def;

   SetPt(&CellSize, 52, 52);
   /*def.u.userProc = listDefinitionFunctionUPP;*/

   CreateCustomList(&CreationRect, &CreationRect, CellSize, &def, CreationWindow, TRUE, TRUE, TRUE, TRUE, &hwnd);
   return (HWND)hwnd;
}

/*
 * Create a tree object to be packed.
 * Parameters:
 *       id: An ID to be used for getting the resource from the
 *           resource file.
 */
HWND API dw_tree_new(ULONG id)
{
   return dw_container_new(id, FALSE);
}

/*
 * Create a new static text window (widget) to be packed.
 * Parameters:
 *       text: The text to be display by the static text widget.
 *       id: An ID to be used with dw_window_from_id() or 0L.
 */
HWND API dw_text_new(char *text, ULONG id)
{
   HWND hwnd = 0;
   CFStringRef cftext = CFStringCreateWithCString(NULL, text, kCFStringEncodingDOSLatinUS);
   CreateStaticTextControl (CreationWindow, &CreationRect, cftext, NULL, &hwnd);
        CFRelease(cftext);
   return hwnd;
}

/*
 * Create a new status text window (widget) to be packed.
 * Parameters:
 *       text: The text to be display by the static text widget.
 *       id: An ID to be used with dw_window_from_id() or 0L.
 */
HWND API dw_status_text_new(char *text, ULONG id)
{
   HWND hwnd = 0;
   CFStringRef cftext = CFStringCreateWithCString(NULL, text, kCFStringEncodingDOSLatinUS);
   CreateStaticTextControl (CreationWindow, &CreationRect, cftext, NULL, &hwnd);
   CFRelease(cftext);
   return hwnd;
}

/*
 * Create a new Multiline Editbox window (widget) to be packed.
 * Parameters:
 *       id: An ID to be used with dw_window_from_id() or 0L.
 */
HWND API dw_mle_new(ULONG id)
{
   HWND hwnd = 0;
   CreateScrollingTextBoxControl(CreationWindow, &CreationRect, id, FALSE, 0, 0, 0, &hwnd);
   return hwnd;
}

/*
 * Create a new Entryfield window (widget) to be packed.
 * Parameters:
 *       text: The default text to be in the entryfield widget.
 *       id: An ID to be used with dw_window_from_id() or 0L.
 */
HWND API dw_entryfield_new(char *text, ULONG id)
{
   HWND hwnd = 0;
   CFStringRef cftext = CFStringCreateWithCString(NULL, text, kCFStringEncodingDOSLatinUS);
   CreateEditTextControl(CreationWindow, &CreationRect, cftext, FALSE, FALSE, NULL, &hwnd);
   CFRelease(cftext);
   return hwnd;
}

/*
 * Create a new Entryfield (password) window (widget) to be packed.
 * Parameters:
 *       text: The default text to be in the entryfield widget.
 *       id: An ID to be used with dw_window_from_id() or 0L.
 */
HWND API dw_entryfield_password_new(char *text, ULONG id)
{
   HWND hwnd = 0;
   CFStringRef cftext = CFStringCreateWithCString(NULL, text, kCFStringEncodingDOSLatinUS);
   CreateEditTextControl(CreationWindow, &CreationRect, cftext, TRUE, FALSE, NULL, &hwnd);
   CFRelease(cftext);
   return hwnd;
}

/*
 * Create a new Combobox window (widget) to be packed.
 * Parameters:
 *       text: The default text to be in the combpbox widget.
 *       id: An ID to be used with dw_window_from_id() or 0L.
 */
HWND API dw_combobox_new(char *text, ULONG id)
{
   return 0;
}

/*
 * Create a new button window (widget) to be packed.
 * Parameters:
 *       text: The text to be display by the static text widget.
 *       id: An ID to be used with dw_window_from_id() or 0L.
 */
HWND API dw_button_new(char *text, ULONG id)
{
   HWND hwnd = 0;
   CFStringRef cftext = CFStringCreateWithCString(NULL, text, kCFStringEncodingDOSLatinUS);
   CreatePushButtonControl(CreationWindow, &CreationRect, cftext, &hwnd);
   CFRelease(cftext);
   return hwnd;
}

/*
 * Create a new bitmap button window (widget) to be packed.
 * Parameters:
 *       text: Bubble help text to be displayed.
 *       id: An ID of a bitmap in the resource file.
 */
HWND API dw_bitmapbutton_new(char *text, ULONG id)
{
   HWND hwnd = 0;
   CreatePushButtonWithIconControl(CreationWindow, &CreationRect, 0, NULL, kControlPushButtonIconOnLeft, &hwnd);
   return hwnd;
}

/*
 * Create a new bitmap button window (widget) to be packed from a file.
 * Parameters:
 *       text: Bubble help text to be displayed.
 *       id: An ID to be used with dw_window_from_id() or 0L.
 *       filename: Name of the file, omit extention to have
 *                 DW pick the appropriate file extension.
 *                 (BMP on OS/2 or Windows, XPM on Unix)
 */
HWND dw_bitmapbutton_new_from_file(char *text, unsigned long id, char *filename)
{
   return 0;
}

/*
 * Create a new bitmap button window (widget) to be packed from data.
 * Parameters:
 *       text: Bubble help text to be displayed.
 *       id: An ID to be used with dw_window_from_id() or 0L.
 *       data: Raw data of image.
 *                 (BMP on OS/2 or Windows, XPM on Unix)
 *       len:  Length of raw data
 */
HWND dw_bitmapbutton_new_from_data(char *text, unsigned long id, char *data, int len)
{
   return 0;
}

/*
 * Create a new spinbutton window (widget) to be packed.
 * Parameters:
 *       text: The text to be display by the static text widget.
 *       id: An ID to be used with dw_window_from_id() or 0L.
 */
HWND API dw_spinbutton_new(char *text, ULONG id)
{
   return 0;
}

/*
 * Create a new radiobutton window (widget) to be packed.
 * Parameters:
 *       text: The text to be display by the static text widget.
 *       id: An ID to be used with dw_window_from_id() or 0L.
 */
HWND API dw_radiobutton_new(char *text, ULONG id)
{
   HWND hwnd = 0;
   CFStringRef cftext = CFStringCreateWithCString(NULL, text, kCFStringEncodingDOSLatinUS);
   CreateRadioButtonControl(CreationWindow, &CreationRect, cftext, 0, FALSE, &hwnd);
   CFRelease(cftext);
   return hwnd;
}


/*
 * Create a new slider window (widget) to be packed.
 * Parameters:
 *       vertical: TRUE or FALSE if slider is vertical.
 *       increments: Number of increments available.
 *       id: An ID to be used with dw_window_from_id() or 0L.
 */
HWND API dw_slider_new(int vertical, int increments, ULONG id)
{
   HWND hwnd = 0;
   CreateSliderControl(CreationWindow, &CreationRect, 0, 0, increments, kControlSliderDoesNotPoint, 0, FALSE, 0, &hwnd);
   return hwnd;
}

/*
 * Create a new scrollbar window (widget) to be packed.
 * Parameters:
 *       vertical: TRUE or FALSE if scrollbar is vertical.
 *       increments: Number of increments available.
 *       id: An ID to be used with dw_window_from_id() or 0L.
 */
HWND API dw_scrollbar_new(int vertical, ULONG id)
{
   HWND hwnd;
   CreateScrollBarControl(CreationWindow, &CreationRect, 0, 0, 100, 100, FALSE, 0, &hwnd);
   return hwnd;
}

/*
 * Create a new percent bar window (widget) to be packed.
 * Parameters:
 *       id: An ID to be used with dw_window_from_id() or 0L.
 */
HWND API dw_percent_new(ULONG id)
{
   HWND hwnd = 0;
   CreateProgressBarControl(CreationWindow, &CreationRect, 0, 0, 100, FALSE, &hwnd);
   return hwnd;
}

/*
 * Create a new checkbox window (widget) to be packed.
 * Parameters:
 *       text: The text to be display by the static text widget.
 *       id: An ID to be used with dw_window_from_id() or 0L.
 */
HWND API dw_checkbox_new(char *text, ULONG id)
{
   HWND hwnd = 0;
   CFStringRef cftext = CFStringCreateWithCString(NULL, text, kCFStringEncodingDOSLatinUS);
   CreateCheckBoxControl(CreationWindow, &CreationRect, cftext, 0, TRUE, &hwnd);
   CFRelease(cftext);
   return hwnd;
}

/*
 * Create a new listbox window (widget) to be packed.
 * Parameters:
 *       id: An ID to be used with dw_window_from_id() or 0L.
 *       multi: Multiple select TRUE or FALSE.
 */
HWND API dw_listbox_new(ULONG id, int multi)
{
   HWND hwnd = 0;
   CreateListBoxControl(CreationWindow, &CreationRect, TRUE, 0, 1, FALSE, TRUE, 50, 50, TRUE, NULL, &hwnd);
   return hwnd;
}

/*
 * Sets the icon used for a given window.
 * Parameters:
 *       handle: Handle to the window.
 *       id: An ID to be used to specify the icon.
 */
void API dw_window_set_icon(HWND handle, ULONG id)
{
}

/*
 * Sets the bitmap used for a given static window.
 * Parameters:
 *       handle: Handle to the window.
 *       id: An ID to be used to specify the icon,
 *           (pass 0 if you use the filename param)
 *       filename: a path to a file (Bitmap on OS/2 or
 *                 Windows and a pixmap on Unix, pass
 *                 NULL if you use the id param)
 */
void API dw_window_set_bitmap(HWND handle, unsigned long id, char *filename)
{
}

/*
 * Sets the bitmap used for a given static window.
 * Parameters:
 *       handle: Handle to the window.
 *       id: An ID to be used to specify the icon,
 *           (pass 0 if you use the filename param)
 *       data: the image data
 *                 Bitmap on Windows and a pixmap on Unix, pass
 *                 NULL if you use the id param)
 *       len: length of data
 */
void dw_window_set_bitmap_from_data(HWND handle, unsigned long id, char *data, int len)
{
}

/*
 * Sets the text used for a given window.
 * Parameters:
 *       handle: Handle to the window.
 *       text: The text associsated with a given window.
 */
void API dw_window_set_text(HWND handle, char *text)
{
   CFStringRef cftext = CFStringCreateWithCString(NULL, text, kCFStringEncodingDOSLatinUS);
   if(IsValidWindowRef((WindowRef)handle))
      SetWindowTitleWithCFString((WindowRef)handle, cftext);
   else
      SetControlTitleWithCFString(handle, cftext);
   CFRelease(cftext);
}

/*
 * Gets the text used for a given window.
 * Parameters:
 *       handle: Handle to the window.
 * Returns:
 *       text: The text associsated with a given window.
 */
char * API dw_window_get_text(HWND handle)
{
   CFStringRef cftext;
   char *ret = NULL;

   if(IsValidWindowRef((WindowRef)handle))
      CopyWindowTitleAsCFString((WindowRef)handle, &cftext);
   else
   {
      Str255 str;

      GetControlTitle(handle, str);
      cftext = CFStringCreateWithPascalString(NULL, str, CFStringGetSystemEncoding());
   }

   if(cftext)
   {
      int length = CFStringGetLength(cftext) + 1;
      char *ret = malloc(length);
      CFStringGetCString(cftext, ret, length, kCFStringEncodingDOSLatinUS);
      CFRelease(cftext);
   }
    return ret;
}

/*
 * Disables given window (widget).
 * Parameters:
 *       handle: Handle to the window.
 */
void API dw_window_disable(HWND handle)
{
   DisableControl(handle);
}

/*
 * Enables given window (widget).
 * Parameters:
 *       handle: Handle to the window.
 */
void API dw_window_enable(HWND handle)
{
   EnableControl(handle);
}

/*
 * Gets the child window handle with specified ID.
 * Parameters:
 *       handle: Handle to the parent window.
 *       id: Integer ID of the child.
 */
HWND API dw_window_from_id(HWND handle, int id)
{
   HWND ret = 0;

#if 0
   ControlID cid = (ControlID)id;
   GetControlByID((WindowRef)handle, &cid, &ret);
#endif
   return ret;
}

/*
 * Pack windows (widgets) into a box from the end (or bottom).
 * Parameters:
 *       box: Window handle of the box to be packed into.
 *       item: Window handle of the item to be back.
 *       width: Width in pixels of the item or -1 to be self determined.
 *       height: Height in pixels of the item or -1 to be self determined.
 *       hsize: TRUE if the window (widget) should expand horizontally to fill space given.
 *       vsize: TRUE if the window (widget) should expand vertically to fill space given.
 *       pad: Number of pixels of padding around the item.
 */
void API dw_box_pack_end(HWND box, HWND item, int width, int height, int hsize, int vsize, int pad)
{
}

/*
 * Sets the size of a given window (widget).
 * Parameters:
 *          handle: Window (widget) handle.
 *          width: New width in pixels.
 *          height: New height in pixels.
 */
void API dw_window_set_size(HWND handle, ULONG width, ULONG height)
{
        SizeWindow((WindowRef)handle, (short)width, (short)height, TRUE);
}

/*
 * Returns the width of the screen.
 */
int API dw_screen_width(void)
{
   return _dw_screen_width;
}

/*
 * Returns the height of the screen.
 */
int API dw_screen_height(void)
{
   return _dw_screen_height;
}

/* This should return the current color depth */
unsigned long API dw_color_depth_get(void)
{
   return _dw_color_depth;
}


/*
 * Sets the position of a given window (widget).
 * Parameters:
 *          handle: Window (widget) handle.
 *          x: X location from the bottom left.
 *          y: Y location from the bottom left.
 */
void API dw_window_set_pos(HWND handle, LONG x, LONG y)
{
   MoveWindow((WindowRef)handle, (short)x, (short)y, FALSE);
}

/*
 * Sets the position and size of a given window (widget).
 * Parameters:
 *          handle: Window (widget) handle.
 *          x: X location from the bottom left.
 *          y: Y location from the bottom left.
 *          width: Width of the widget.
 *          height: Height of the widget.
 */
void API dw_window_set_pos_size(HWND handle, LONG x, LONG y, ULONG width, ULONG height)
{
   dw_window_set_pos(handle, x, y);
   dw_window_set_size(handle, width, height);
}

/*
 * Gets the position and size of a given window (widget).
 * Parameters:
 *          handle: Window (widget) handle.
 *          x: X location from the bottom left.
 *          y: Y location from the bottom left.
 *          width: Width of the widget.
 *          height: Height of the widget.
 */
void API dw_window_get_pos_size(HWND handle, LONG *x, LONG *y, ULONG *width, ULONG *height)
{
}

/*
 * Sets the style of a given window (widget).
 * Parameters:
 *          handle: Window (widget) handle.
 *          width: New width in pixels.
 *          height: New height in pixels.
 */
void API dw_window_set_style(HWND handle, ULONG style, ULONG mask)
{
}

/*
 * Adds a new page to specified notebook.
 * Parameters:
 *          handle: Window (widget) handle.
 *          flags: Any additional page creation flags.
 *          front: If TRUE page is added at the beginning.
 */
unsigned long API dw_notebook_page_new(HWND handle, ULONG flags, int front)
{
   return 0;
}

/*
 * Remove a page from a notebook.
 * Parameters:
 *          handle: Handle to the notebook widget.
 *          pageid: ID of the page to be destroyed.
 */
void API dw_notebook_page_destroy(HWND handle, unsigned int pageid)
{
}

/*
 * Queries the currently visible page ID.
 * Parameters:
 *          handle: Handle to the notebook widget.
 */
unsigned long API dw_notebook_page_get(HWND handle)
{
   return 0;
}

/*
 * Sets the currently visibale page ID.
 * Parameters:
 *          handle: Handle to the notebook widget.
 *          pageid: ID of the page to be made visible.
 */
void API dw_notebook_page_set(HWND handle, unsigned int pageid)
{
}

/*
 * Sets the text on the specified notebook tab.
 * Parameters:
 *          handle: Notebook handle.
 *          pageid: Page ID of the tab to set.
 *          text: Pointer to the text to set.
 */
void API dw_notebook_page_set_text(HWND handle, ULONG pageid, char *text)
{
}

/*
 * Sets the text on the specified notebook tab status area.
 * Parameters:
 *          handle: Notebook handle.
 *          pageid: Page ID of the tab to set.
 *          text: Pointer to the text to set.
 */
void API dw_notebook_page_set_status_text(HWND handle, ULONG pageid, char *text)
{
}

/*
 * Packs the specified box into the notebook page.
 * Parameters:
 *          handle: Handle to the notebook to be packed.
 *          pageid: Page ID in the notebook which is being packed.
 *          page: Box handle to be packed.
 */
void API dw_notebook_pack(HWND handle, ULONG pageid, HWND page)
{
}

/*
 * Appends the specified text to the listbox's (or combobox) entry list.
 * Parameters:
 *          handle: Handle to the listbox to be appended to.
 *          text: Text to append into listbox.
 */
void API dw_listbox_append(HWND handle, char *text)
{
}

/*
 * Appends the specified text items to the listbox's (or combobox) entry list.
 * Parameters:
 *          handle: Handle to the listbox to be appended to.
 *          text: Text strings to append into listbox.
 *          count: Number of text strings to append
 */
void API dw_listbox_list_append(HWND handle, char **text, int count)
{
}

/*
 * Clears the listbox's (or combobox) list of all entries.
 * Parameters:
 *          handle: Handle to the listbox to be cleared.
 */
void API dw_listbox_clear(HWND handle)
{
}

/*
 * Returns the listbox's item count.
 * Parameters:
 *          handle: Handle to the listbox to be cleared.
 */
int API dw_listbox_count(HWND handle)
{
   return 0;
}

/*
 * Sets the topmost item in the viewport.
 * Parameters:
 *          handle: Handle to the listbox to be cleared.
 *          top: Index to the top item.
 */
void API dw_listbox_set_top(HWND handle, int top)
{
}

/*
 * Copies the given index item's text into buffer.
 * Parameters:
 *          handle: Handle to the listbox to be queried.
 *          index: Index into the list to be queried.
 *          buffer: Buffer where text will be copied.
 *          length: Length of the buffer (including NULL).
 */
void API dw_listbox_get_text(HWND handle, unsigned int index, char *buffer, unsigned int length)
{
}

/*
 * Sets the text of a given listbox entry.
 * Parameters:
 *          handle: Handle to the listbox to be queried.
 *          index: Index into the list to be queried.
 *          buffer: Buffer where text will be copied.
 */
void API dw_listbox_set_text(HWND handle, unsigned int index, char *buffer)
{
}

/*
 * Returns the index to the item in the list currently selected.
 * Parameters:
 *          handle: Handle to the listbox to be queried.
 */
unsigned int API dw_listbox_selected(HWND handle)
{
    return 0;
}

/*
 * Returns the index to the current selected item or -1 when done.
 * Parameters:
 *          handle: Handle to the listbox to be queried.
 *          where: Either the previous return or -1 to restart.
 */
int API dw_listbox_selected_multi(HWND handle, int where)
{
   return -1;
}

/*
 * Sets the selection state of a given index.
 * Parameters:
 *          handle: Handle to the listbox to be set.
 *          index: Item index.
 *          state: TRUE if selected FALSE if unselected.
 */
void API dw_listbox_select(HWND handle, int index, int state)
{
}

/*
 * Deletes the item with given index from the list.
 * Parameters:
 *          handle: Handle to the listbox to be set.
 *          index: Item index.
 */
void API dw_listbox_delete(HWND handle, int index)
{
}

/*
 * Adds text to an MLE box and returns the current point.
 * Parameters:
 *          handle: Handle to the MLE to be queried.
 *          buffer: Text buffer to be imported.
 *          startpoint: Point to start entering text.
 */
unsigned int API dw_mle_import(HWND handle, char *buffer, int startpoint)
{
    return 0;
}

/*
 * Grabs text from an MLE box.
 * Parameters:
 *          handle: Handle to the MLE to be queried.
 *          buffer: Text buffer to be exported.
 *          startpoint: Point to start grabbing text.
 *          length: Amount of text to be grabbed.
 */
void API dw_mle_export(HWND handle, char *buffer, int startpoint, int length)
{
}

/*
 * Obtains information about an MLE box.
 * Parameters:
 *          handle: Handle to the MLE to be queried.
 *          bytes: A pointer to a variable to return the total bytes.
 *          lines: A pointer to a variable to return the number of lines.
 */
void API dw_mle_get_size(HWND handle, unsigned long *bytes, unsigned long *lines)
{
}

/*
 * Deletes text from an MLE box.
 * Parameters:
 *          handle: Handle to the MLE to be deleted from.
 *          startpoint: Point to start deleting text.
 *          length: Amount of text to be deleted.
 */
void API dw_mle_delete(HWND handle, int startpoint, int length)
{
}

/*
 * Clears all text from an MLE box.
 * Parameters:
 *          handle: Handle to the MLE to be cleared.
 */
void API dw_mle_clear(HWND handle)
{
}

/*
 * Sets the visible line of an MLE box.
 * Parameters:
 *          handle: Handle to the MLE to be positioned.
 *          line: Line to be visible.
 */
void API dw_mle_set_visible(HWND handle, int line)
{
}

/*
 * Sets the editablity of an MLE box.
 * Parameters:
 *          handle: Handle to the MLE.
 *          state: TRUE if it can be edited, FALSE for readonly.
 */
void API dw_mle_set_editable(HWND handle, int state)
{
}

/*
 * Sets the word wrap state of an MLE box.
 * Parameters:
 *          handle: Handle to the MLE.
 *          state: TRUE if it wraps, FALSE if it doesn't.
 */
void API dw_mle_set_word_wrap(HWND handle, int state)
{
}

/*
 * Sets the current cursor position of an MLE box.
 * Parameters:
 *          handle: Handle to the MLE to be positioned.
 *          point: Point to position cursor.
 */
void API dw_mle_set_cursor(HWND handle, int point)
{
}

/*
 * Finds text in an MLE box.
 * Parameters:
 *          handle: Handle to the MLE to be cleared.
 *          text: Text to search for.
 *          point: Start point of search.
 *          flags: Search specific flags.
 */
int API dw_mle_search(HWND handle, char *text, int point, unsigned long flags)
{
   return 0;
}

/*
 * Stops redrawing of an MLE box.
 * Parameters:
 *          handle: Handle to the MLE to freeze.
 */
void API dw_mle_freeze(HWND handle)
{
}

/*
 * Resumes redrawing of an MLE box.
 * Parameters:
 *          handle: Handle to the MLE to thaw.
 */
void API dw_mle_thaw(HWND handle)
{
}

/*
 * Sets the percent bar position.
 * Parameters:
 *          handle: Handle to the percent bar to be set.
 *          position: Position of the percent bar withing the range.
 */
void API dw_percent_set_pos(HWND handle, unsigned int position)
{
}

/*
 * Returns the position of the slider.
 * Parameters:
 *          handle: Handle to the slider to be queried.
 */
unsigned int API dw_slider_get_pos(HWND handle)
{
   return 0;
}

/*
 * Sets the slider position.
 * Parameters:
 *          handle: Handle to the slider to be set.
 *          position: Position of the slider withing the range.
 */
void API dw_slider_set_pos(HWND handle, unsigned int position)
{
}

/*
 * Returns the position of the scrollbar.
 * Parameters:
 *          handle: Handle to the scrollbar to be queried.
 */
unsigned int API dw_scrollbar_get_pos(HWND handle)
{
   return 0;
}

/*
 * Sets the scrollbar position.
 * Parameters:
 *          handle: Handle to the scrollbar to be set.
 *          position: Position of the scrollbar withing the range.
 */
void API dw_scrollbar_set_pos(HWND handle, unsigned int position)
{
}

/*
 * Sets the scrollbar range.
 * Parameters:
 *          handle: Handle to the scrollbar to be set.
 *          range: Maximum range value.
 *          visible: Visible area relative to the range.
 */
void API dw_scrollbar_set_range(HWND handle, unsigned int range, unsigned int visible)
{
}

/*
 * Sets the spinbutton value.
 * Parameters:
 *          handle: Handle to the spinbutton to be set.
 *          position: Current value of the spinbutton.
 */
void API dw_spinbutton_set_pos(HWND handle, long position)
{
}

/*
 * Sets the spinbutton limits.
 * Parameters:
 *          handle: Handle to the spinbutton to be set.
 *          upper: Upper limit.
 *          lower: Lower limit.
 */
void API dw_spinbutton_set_limits(HWND handle, long upper, long lower)
{
}

/*
 * Sets the entryfield character limit.
 * Parameters:
 *          handle: Handle to the spinbutton to be set.
 *          limit: Number of characters the entryfield will take.
 */
void API dw_entryfield_set_limit(HWND handle, ULONG limit)
{
}


/*
 * Returns the current value of the spinbutton.
 * Parameters:
 *          handle: Handle to the spinbutton to be queried.
 */
long API dw_spinbutton_get_pos(HWND handle)
{
    return 0;
}

/*
 * Returns the state of the checkbox.
 * Parameters:
 *          handle: Handle to the checkbox to be queried.
 */
int API dw_checkbox_get(HWND handle)
{
   return 0;
}

/*
 * Sets the state of the checkbox.
 * Parameters:
 *          handle: Handle to the checkbox to be queried.
 *          value: TRUE for checked, FALSE for unchecked.
 */
void API dw_checkbox_set(HWND handle, int value)
{
}

/*
 * Inserts an item into a tree window (widget) after another item.
 * Parameters:
 *          handle: Handle to the tree to be inserted.
 *          item: Handle to the item to be positioned after.
 *          title: The text title of the entry.
 *          icon: Handle to coresponding icon.
 *          parent: Parent handle or 0 if root.
 *          itemdata: Item specific data.
 */
HTREEITEM API dw_tree_insert_after(HWND handle, HTREEITEM item, char *title, unsigned long icon, HTREEITEM parent, void *itemdata)
{
   return 0;
}

/*
 * Inserts an item into a tree window (widget).
 * Parameters:
 *          handle: Handle to the tree to be inserted.
 *          title: The text title of the entry.
 *          icon: Handle to coresponding icon.
 *          parent: Parent handle or 0 if root.
 *          itemdata: Item specific data.
 */
HTREEITEM API dw_tree_insert(HWND handle, char *title, unsigned long icon, HTREEITEM parent, void *itemdata)
{
   return 0;
}

/*
 * Sets the text and icon of an item in a tree window (widget).
 * Parameters:
 *          handle: Handle to the tree containing the item.
 *          item: Handle of the item to be modified.
 *          title: The text title of the entry.
 *          icon: Handle to coresponding icon.
 */
void API dw_tree_item_change(HWND handle, HTREEITEM item, char *title, unsigned long icon)
{
}

/*
 * Sets the item data of a tree item.
 * Parameters:
 *          handle: Handle to the tree containing the item.
 *          item: Handle of the item to be modified.
 *          itemdata: User defined data to be associated with item.
 */
void API dw_tree_item_set_data(HWND handle, HTREEITEM item, void *itemdata)
{
}

/*
 * Gets the item data of a tree item.
 * Parameters:
 *          handle: Handle to the tree containing the item.
 *          item: Handle of the item to be modified.
 */
void * API dw_tree_item_get_data(HWND handle, HTREEITEM item)
{
   return NULL;
}

/*
 * Sets this item as the active selection.
 * Parameters:
 *       handle: Handle to the tree window (widget) to be selected.
 *       item: Handle to the item to be selected.
 */
void API dw_tree_item_select(HWND handle, HTREEITEM item)
{
}

/*
 * Removes all nodes from a tree.
 * Parameters:
 *       handle: Handle to the window (widget) to be cleared.
 */
void API dw_tree_clear(HWND handle)
{
}

/*
 * Expands a node on a tree.
 * Parameters:
 *       handle: Handle to the tree window (widget).
 *       item: Handle to node to be expanded.
 */
void API dw_tree_item_expand(HWND handle, HTREEITEM item)
{
}

/*
 * Collapses a node on a tree.
 * Parameters:
 *       handle: Handle to the tree window (widget).
 *       item: Handle to node to be collapsed.
 */
void API dw_tree_item_collapse(HWND handle, HTREEITEM item)
{
}

/*
 * Removes a node from a tree.
 * Parameters:
 *       handle: Handle to the window (widget) to be cleared.
 *       item: Handle to node to be deleted.
 */
void API dw_tree_item_delete(HWND handle, HTREEITEM item)
{
}

/*
 * Sets up the container columns.
 * Parameters:
 *          handle: Handle to the container to be configured.
 *          flags: An array of unsigned longs with column flags.
 *          titles: An array of strings with column text titles.
 *          count: The number of columns (this should match the arrays).
 *          separator: The column number that contains the main separator.
 *                     (this item may only be used in OS/2)
 */
int API dw_container_setup(HWND handle, unsigned long *flags, char **titles, int count, int separator)
{
   return TRUE;
}

/*
 * Sets up the filesystem columns, note: filesystem always has an icon/filename field.
 * Parameters:
 *          handle: Handle to the container to be configured.
 *          flags: An array of unsigned longs with column flags.
 *          titles: An array of strings with column text titles.
 *          count: The number of columns (this should match the arrays).
 */
int API dw_filesystem_setup(HWND handle, unsigned long *flags, char **titles, int count)
{
   char **newtitles = malloc(sizeof(char *) * (count + 2));
   unsigned long *newflags = malloc(sizeof(unsigned long) * (count + 2));

   newtitles[0] = "Icon";
   newtitles[1] = "Filename";

   newflags[0] = DW_CFA_BITMAPORICON | DW_CFA_CENTER | DW_CFA_HORZSEPARATOR | DW_CFA_SEPARATOR;
   newflags[1] = DW_CFA_STRING | DW_CFA_LEFT | DW_CFA_HORZSEPARATOR;

   memcpy(&newtitles[2], titles, sizeof(char *) * count);
   memcpy(&newflags[2], flags, sizeof(unsigned long) * count);

   dw_container_setup(handle, newflags, newtitles, count + 2, count ? 2 : 0);

   free(newtitles);
   free(newflags);
   return TRUE;
}

/*
 * Obtains an icon from a module (or header in GTK).
 * Parameters:
 *          module: Handle to module (DLL) in OS/2 and Windows.
 *          id: A unsigned long id int the resources on OS/2 and
 *              Windows, on GTK this is converted to a pointer
 *              to an embedded XPM.
 */
unsigned long API dw_icon_load(unsigned long module, unsigned long id)
{
   return 0;
}

/*
 * Obtains an icon from a file.
 * Parameters:
 *       filename: Name of the file, omit extention to have
 *                 DW pick the appropriate file extension.
 *                 (ICO on OS/2 or Windows, XPM on Unix)
 */
unsigned long API dw_icon_load_from_file(char *filename)
{
   return 0;
}

/*
 * Obtains an icon from data.
 * Parameters:
 *       data: Source of data for image.
 *       len:  length of data
 */
unsigned long API dw_icon_load_from_data(char *data, int len)
{
   return 0;
}

/*
 * Frees a loaded resource in OS/2 and Windows.
 * Parameters:
 *          handle: Handle to icon returned by dw_icon_load().
 */
void API dw_icon_free(unsigned long handle)
{
}

/*
 * Allocates memory used to populate a container.
 * Parameters:
 *          handle: Handle to the container window (widget).
 *          rowcount: The number of items to be populated.
 */
void * API dw_container_alloc(HWND handle, int rowcount)
{
   return NULL;
}

/*
 * Sets an item in specified row and column to the given data.
 * Parameters:
 *          handle: Handle to the container window (widget).
 *          pointer: Pointer to the allocated memory in dw_container_alloc().
 *          column: Zero based column of data being set.
 *          row: Zero based row of data being set.
 *          data: Pointer to the data to be added.
 */
void API dw_container_set_item(HWND handle, void *pointer, int column, int row, void *data)
{
}

/*
 * Changes an existing item in specified row and column to the given data.
 * Parameters:
 *          handle: Handle to the container window (widget).
 *          column: Zero based column of data being set.
 *          row: Zero based row of data being set.
 *          data: Pointer to the data to be added.
 */
void API dw_container_change_item(HWND handle, int column, int row, void *data)
{
}

/*
 * Changes an existing item in specified row and column to the given data.
 * Parameters:
 *          handle: Handle to the container window (widget).
 *          column: Zero based column of data being set.
 *          row: Zero based row of data being set.
 *          data: Pointer to the data to be added.
 */
void API dw_filesystem_change_item(HWND handle, int column, int row, void *data)
{
   dw_filesystem_set_item(handle, NULL, column, row, data);
}

/*
 * Changes an item in specified row and column to the given data.
 * Parameters:
 *          handle: Handle to the container window (widget).
 *          pointer: Pointer to the allocated memory in dw_container_alloc().
 *          column: Zero based column of data being set.
 *          row: Zero based row of data being set.
 *          data: Pointer to the data to be added.
 */
void API dw_filesystem_change_file(HWND handle, int row, char *filename, unsigned long icon)
{
   dw_filesystem_set_file(handle, NULL, row, filename, icon);
}

/*
 * Sets an item in specified row and column to the given data.
 * Parameters:
 *          handle: Handle to the container window (widget).
 *          pointer: Pointer to the allocated memory in dw_container_alloc().
 *          column: Zero based column of data being set.
 *          row: Zero based row of data being set.
 *          data: Pointer to the data to be added.
 */
void API dw_filesystem_set_file(HWND handle, void *pointer, int row, char *filename, unsigned long icon)
{
   dw_container_set_item(handle, pointer, 0, row, (void *)&icon);
   dw_container_set_item(handle, pointer, 1, row, (void *)&filename);
}

/*
 * Sets an item in specified row and column to the given data.
 * Parameters:
 *          handle: Handle to the container window (widget).
 *          pointer: Pointer to the allocated memory in dw_container_alloc().
 *          column: Zero based column of data being set.
 *          row: Zero based row of data being set.
 *          data: Pointer to the data to be added.
 */
void API dw_filesystem_set_item(HWND handle, void *pointer, int column, int row, void *data)
{
   dw_container_set_item(handle, pointer, column + 2, row, data);
}

/*
 * Gets column type for a container column
 * Parameters:
 *          handle: Handle to the container window (widget).
 *          column: Zero based column.
 */
int API dw_container_get_column_type(HWND handle, int column)
{
   return 0;
}

/*
 * Gets column type for a filesystem container column
 * Parameters:
 *          handle: Handle to the container window (widget).
 *          column: Zero based column.
 */
int API dw_filesystem_get_column_type(HWND handle, int column)
{
   return dw_container_get_column_type( handle, column + 1 );
}

/*
 * Sets the width of a column in the container.
 * Parameters:
 *          handle: Handle to window (widget) of container.
 *          column: Zero based column of width being set.
 *          width: Width of column in pixels.
 */
void API dw_container_set_column_width(HWND handle, int column, int width)
{
}

/*
 * Sets the title of a row in the container.
 * Parameters:
 *          pointer: Pointer to the allocated memory in dw_container_alloc().
 *          row: Zero based row of data being set.
 *          title: String title of the item.
 */
void API dw_container_set_row_title(void *pointer, int row, char *title)
{
}

/*
 * Sets the title of a row in the container.
 * Parameters:
 *          handle: Handle to the container window (widget).
 *          pointer: Pointer to the allocated memory in dw_container_alloc().
 *          rowcount: The number of rows to be inserted.
 */
void API dw_container_insert(HWND handle, void *pointer, int rowcount)
{
}

/*
 * Removes all rows from a container.
 * Parameters:
 *       handle: Handle to the window (widget) to be cleared.
 *       redraw: TRUE to cause the container to redraw immediately.
 */
void API dw_container_clear(HWND handle, int redraw)
{
}

/*
 * Removes the first x rows from a container.
 * Parameters:
 *       handle: Handle to the window (widget) to be deleted from.
 *       rowcount: The number of rows to be deleted.
 */
void API dw_container_delete(HWND handle, int rowcount)
{
}

/*
 * Scrolls container up or down.
 * Parameters:
 *       handle: Handle to the window (widget) to be scrolled.
 *       direction: DW_SCROLL_UP, DW_SCROLL_DOWN, DW_SCROLL_TOP or
 *                  DW_SCROLL_BOTTOM. (rows is ignored for last two)
 *       rows: The number of rows to be scrolled.
 */
void API dw_container_scroll(HWND handle, int direction, long rows)
{
}

/*
 * Starts a new query of a container.
 * Parameters:
 *       handle: Handle to the window (widget) to be queried.
 *       flags: If this parameter is DW_CRA_SELECTED it will only
 *              return items that are currently selected.  Otherwise
 *              it will return all records in the container.
 */
char * API dw_container_query_start(HWND handle, unsigned long flags)
{
    return NULL;
}

/*
 * Continues an existing query of a container.
 * Parameters:
 *       handle: Handle to the window (widget) to be queried.
 *       flags: If this parameter is DW_CRA_SELECTED it will only
 *              return items that are currently selected.  Otherwise
 *              it will return all records in the container.
 */
char * API dw_container_query_next(HWND handle, unsigned long flags)
{
    return NULL;
}

/*
 * Cursors the item with the text speficied, and scrolls to that item.
 * Parameters:
 *       handle: Handle to the window (widget) to be queried.
 *       text:  Text usually returned by dw_container_query().
 */
void API dw_container_cursor(HWND handle, char *text)
{
}

/*
 * Deletes the item with the text speficied.
 * Parameters:
 *       handle: Handle to the window (widget).
 *       text:  Text usually returned by dw_container_query().
 */
void API dw_container_delete_row(HWND handle, char *text)
{
}

/*
 * Optimizes the column widths so that all data is visible.
 * Parameters:
 *       handle: Handle to the window (widget) to be optimized.
 */
void API dw_container_optimize(HWND handle)
{
}

/*
 * Inserts an icon into the taskbar.
 * Parameters:
 *       handle: Window handle that will handle taskbar icon messages.
 *       icon: Icon handle to display in the taskbar.
 *       bubbletext: Text to show when the mouse is above the icon.
 */
void dw_taskbar_insert(HWND handle, unsigned long icon, char *bubbletext)
{
}

/*
 * Deletes an icon from the taskbar.
 * Parameters:
 *       handle: Window handle that was used with dw_taskbar_insert().
 *       icon: Icon handle that was used with dw_taskbar_insert().
 */
void dw_taskbar_delete(HWND handle, unsigned long icon)
{
}

/*
 * Creates a rendering context widget (window) to be packed.
 * Parameters:
 *       id: An id to be used with dw_window_from_id.
 * Returns:
 *       A handle to the widget or NULL on failure.
 */
HWND API dw_render_new(unsigned long id)
{
   return 0;
}

/* Sets the current foreground drawing color.
 * Parameters:
 *       red: red value.
 *       green: green value.
 *       blue: blue value.
 */
void API dw_color_foreground_set(unsigned long value)
{
}

/* Sets the current background drawing color.
 * Parameters:
 *       red: red value.
 *       green: green value.
 *       blue: blue value.
 */
void API dw_color_background_set(unsigned long value)
{
}

/* Allows the user to choose a color using the system's color chooser dialog.
 * Parameters:
 *       value: current color
 * Returns:
 *       The selected color or the current color if cancelled.
 */
unsigned long API dw_color_choose(unsigned long value)
{
   dw_messagebox("Not implemented", DW_MB_OK|DW_MB_INFORMATION, "This feature not yet supported.");
   return value;
}

/* Draw a point on a window (preferably a render window).
 * Parameters:
 *       handle: Handle to the window.
 *       pixmap: Handle to the pixmap. (choose only one of these)
 *       x: X coordinate.
 *       y: Y coordinate.
 */
void API dw_draw_point(HWND handle, HPIXMAP pixmap, int x, int y)
{
}

/* Draw a line on a window (preferably a render window).
 * Parameters:
 *       handle: Handle to the window.
 *       pixmap: Handle to the pixmap. (choose only one of these)
 *       x1: First X coordinate.
 *       y1: First Y coordinate.
 *       x2: Second X coordinate.
 *       y2: Second Y coordinate.
 */
void API dw_draw_line(HWND handle, HPIXMAP pixmap, int x1, int y1, int x2, int y2)
{
}

/* Draw text on a window (preferably a render window).
 * Parameters:
 *       handle: Handle to the window.
 *       pixmap: Handle to the pixmap. (choose only one of these)
 *       x: X coordinate.
 *       y: Y coordinate.
 *       text: Text to be displayed.
 */
void API dw_draw_text(HWND handle, HPIXMAP pixmap, int x, int y, char *text)
{
}

/* Query the width and height of a text string.
 * Parameters:
 *       handle: Handle to the window.
 *       pixmap: Handle to the pixmap. (choose only one of these)
 *       text: Text to be queried.
 *       width: Pointer to a variable to be filled in with the width.
 *       height Pointer to a variable to be filled in with the height.
 */
void API dw_font_text_extents_get(HWND handle, HPIXMAP pixmap, char *text, int *width, int *height)
{
}

/* Draw a rectangle on a window (preferably a render window).
 * Parameters:
 *       handle: Handle to the window.
 *       pixmap: Handle to the pixmap. (choose only one of these)
 *       fill: Fill box TRUE or FALSE.
 *       x: X coordinate.
 *       y: Y coordinate.
 *       width: Width of rectangle.
 *       height: Height of rectangle.
 */
void API dw_draw_rect(HWND handle, HPIXMAP pixmap, int fill, int x, int y, int width, int height)
{
}

/* Call this after drawing to the screen to make sure
 * anything you have drawn is visible.
 */
void API dw_flush(void)
{
}

/*
 * Creates a pixmap with given parameters.
 * Parameters:
 *       handle: Window handle the pixmap is associated with.
 *       width: Width of the pixmap in pixels.
 *       height: Height of the pixmap in pixels.
 *       depth: Color depth of the pixmap.
 * Returns:
 *       A handle to a pixmap or NULL on failure.
 */
HPIXMAP API dw_pixmap_new(HWND handle, unsigned long width, unsigned long height, int depth)
{
   return 0;
}

/*
 * Creates a pixmap from a file.
 * Parameters:
 *       handle: Window handle the pixmap is associated with.
 *       filename: Name of the file, omit extention to have
 *                 DW pick the appropriate file extension.
 *                 (BMP on OS/2 or Windows, XPM on Unix)
 * Returns:
 *       A handle to a pixmap or NULL on failure.
 */
HPIXMAP API dw_pixmap_new_from_file(HWND handle, char *filename)
{
   return 0;
}

/*
 * Creates a pixmap from data
 * Parameters:
 *       handle: Window handle the pixmap is associated with.
 *       data: Source of image data
 *                 DW pick the appropriate file extension.
 *                 (BMP on OS/2 or Windows, XPM on Unix)
 * Returns:
 *       A handle to a pixmap or NULL on failure.
 */
HPIXMAP API dw_pixmap_new_from_data(HWND handle, char *data, int len)
{
   return 0;
}

/*
 * Creates a pixmap from internal resource graphic specified by id.
 * Parameters:
 *       handle: Window handle the pixmap is associated with.
 *       id: Resource ID associated with requested pixmap.
 * Returns:
 *       A handle to a pixmap or NULL on failure.
 */
HPIXMAP API dw_pixmap_grab(HWND handle, ULONG id)
{
   return 0;
}

/*
 * Destroys an allocated pixmap.
 * Parameters:
 *       pixmap: Handle to a pixmap returned by
 *               dw_pixmap_new..
 */
void API dw_pixmap_destroy(HPIXMAP pixmap)
{
}

/*
 * Copies from one item to another.
 * Parameters:
 *       dest: Destination window handle.
 *       destp: Destination pixmap. (choose only one).
 *       xdest: X coordinate of destination.
 *       ydest: Y coordinate of destination.
 *       width: Width of area to copy.
 *       height: Height of area to copy.
 *       src: Source window handle.
 *       srcp: Source pixmap. (choose only one).
 *       xsrc: X coordinate of source.
 *       ysrc: Y coordinate of source.
 */
void API dw_pixmap_bitblt(HWND dest, HPIXMAP destp, int xdest, int ydest, int width, int height, HWND src, HPIXMAP srcp, int xsrc, int ysrc)
{
}

/*
 * Emits a beep.
 * Parameters:
 *       freq: Frequency.
 *       dur: Duration.
 */
void API dw_beep(int freq, int dur)
{
   SysBeep(dur);
}

/* Open a shared library and return a handle.
 * Parameters:
 *         name: Base name of the shared library.
 *         handle: Pointer to a module handle,
 *                 will be filled in with the handle.
 */
int API dw_module_load(char *name, HMOD *handle)
{
   return 0;
}

/* Queries the address of a symbol within open handle.
 * Parameters:
 *         handle: Module handle returned by dw_module_load()
 *         name: Name of the symbol you want the address of.
 *         func: A pointer to a function pointer, to obtain
 *               the address.
 */
int API dw_module_symbol(HMOD handle, char *name, void**func)
{
   return 0;
}

/* Frees the shared library previously opened.
 * Parameters:
 *         handle: Module handle returned by dw_module_load()
 */
int API dw_module_close(HMOD handle)
{
   return 0;
}

/*
 * Returns the handle to an unnamed mutex semaphore.
 */
HMTX API dw_mutex_new(void)
{
   return 0;
}

/*
 * Closes a semaphore created by dw_mutex_new().
 * Parameters:
 *       mutex: The handle to the mutex returned by dw_mutex_new().
 */
void API dw_mutex_close(HMTX mutex)
{
}

/*
 * Tries to gain access to the semaphore, if it can't it blocks.
 * If we are in a callback we must keep the message loop running
 * while blocking.
 * Parameters:
 *       mutex: The handle to the mutex returned by dw_mutex_new().
 */
void API dw_mutex_lock(HMTX mutex)
{
}

/*
 * Reliquishes the access to the semaphore.
 * Parameters:
 *       mutex: The handle to the mutex returned by dw_mutex_new().
 */
void API dw_mutex_unlock(HMTX mutex)
{
}

/*
 * Returns the handle to an unnamed event semaphore.
 */
HEV API dw_event_new(void)
{
   return 0;
}

/*
 * Resets a semaphore created by dw_event_new().
 * Parameters:
 *       eve: The handle to the event returned by dw_event_new().
 */
int API dw_event_reset(HEV eve)
{
   return TRUE;
}

/*
 * Posts a semaphore created by dw_event_new(). Causing all threads
 * waiting on this event in dw_event_wait to continue.
 * Parameters:
 *       eve: The handle to the event returned by dw_event_new().
 */
int API dw_event_post(HEV eve)
{
   return TRUE;
}


/*
 * Waits on a semaphore created by dw_event_new(), until the
 * event gets posted or until the timeout expires.
 * Parameters:
 *       eve: The handle to the event returned by dw_event_new().
 */
int API dw_event_wait(HEV eve, unsigned long timeout)
{
   return TRUE;
}

/*
 * Closes a semaphore created by dw_event_new().
 * Parameters:
 *       eve: The handle to the event returned by dw_event_new().
 */
int API dw_event_close(HEV *eve)
{
   return TRUE;
}

/* Create a named event semaphore which can be
 * opened from other processes.
 * Parameters:
 *         eve: Pointer to an event handle to receive handle.
 *         name: Name given to semaphore which can be opened
 *               by other processes.
 */
HEV API dw_named_event_new(char *name)
{
   return 0;
}

/* Open an already existing named event semaphore.
 * Parameters:
 *         eve: Pointer to an event handle to receive handle.
 *         name: Name given to semaphore which can be opened
 *               by other processes.
 */
HEV API dw_named_event_get(char *name)
{
   return 0;
}

/* Resets the event semaphore so threads who call wait
 * on this semaphore will block.
 * Parameters:
 *         eve: Handle to the semaphore obtained by
 *              an open or create call.
 */
int API dw_named_event_reset(HEV eve)
{
   return 0;
}

/* Sets the posted state of an event semaphore, any threads
 * waiting on the semaphore will no longer block.
 * Parameters:
 *         eve: Handle to the semaphore obtained by
 *              an open or create call.
 */
int API dw_named_event_post(HEV eve)
{
   return 0;
}


/* Waits on the specified semaphore until it becomes
 * posted, or returns immediately if it already is posted.
 * Parameters:
 *         eve: Handle to the semaphore obtained by
 *              an open or create call.
 *         timeout: Number of milliseconds before timing out
 *                  or -1 if indefinite.
 */
int API dw_named_event_wait(HEV eve, unsigned long timeout)
{
   return 0;
}

/* Release this semaphore, if there are no more open
 * handles on this semaphore the semaphore will be destroyed.
 * Parameters:
 *         eve: Handle to the semaphore obtained by
 *              an open or create call.
 */
int API dw_named_event_close(HEV eve)
{
   return 0;
}

/*
 * Allocates a shared memory region with a name.
 * Parameters:
 *         handle: A pointer to receive a SHM identifier.
 *         dest: A pointer to a pointer to receive the memory address.
 *         size: Size in bytes of the shared memory region to allocate.
 *         name: A string pointer to a unique memory name.
 */
HSHM API dw_named_memory_new(void **dest, int size, char *name)
{
   return 0;
}

/*
 * Aquires shared memory region with a name.
 * Parameters:
 *         dest: A pointer to a pointer to receive the memory address.
 *         size: Size in bytes of the shared memory region to requested.
 *         name: A string pointer to a unique memory name.
 */
HSHM API dw_named_memory_get(void **dest, int size, char *name)
{
   return 0;
}

/*
 * Frees a shared memory region previously allocated.
 * Parameters:
 *         handle: Handle obtained from DB_named_memory_allocate.
 *         ptr: The memory address aquired with DB_named_memory_allocate.
 */
int API dw_named_memory_free(HSHM handle, void *ptr)
{

   return 0;
}

/*
 * Creates a new thread with a starting point of func.
 * Parameters:
 *       func: Function which will be run in the new thread.
 *       data: Parameter(s) passed to the function.
 *       stack: Stack size of new thread (OS/2 and Windows only).
 */
DWTID API dw_thread_new(void *func, void *data, int stack)
{
   return (DWTID)-1;
}

/*
 * Ends execution of current thread immediately.
 */
void API dw_thread_end(void)
{
}

/*
 * Returns the current thread's ID.
 */
DWTID API dw_thread_id(void)
{
   return 0;
}

/*
 * Cleanly terminates a DW session, should be signal handler safe.
 * Parameters:
 *       exitcode: Exit code reported to the operating system.
 */
void API dw_exit(int exitcode)
{
   exit(exitcode);
}

/*
 * Creates a splitbar window (widget) with given parameters.
 * Parameters:
 *       type: Value can be DW_VERT or DW_HORZ.
 *       topleft: Handle to the window to be top or left.
 *       bottomright:  Handle to the window to be bottom or right.
 * Returns:
 *       A handle to a splitbar window or NULL on failure.
 */
HWND API dw_splitbar_new(int type, HWND topleft, HWND bottomright, unsigned long id)
{
   return 0;
}

/*
 * Sets the position of a splitbar (pecentage).
 * Parameters:
 *       handle: The handle to the splitbar returned by dw_splitbar_new().
 */
void API dw_splitbar_set(HWND handle, float percent)
{
}

/*
 * Gets the position of a splitbar (pecentage).
 * Parameters:
 *       handle: The handle to the splitbar returned by dw_splitbar_new().
 */
float API dw_splitbar_get(HWND handle)
{
   return 0.0;
}

/*
 * Creates a calendar window (widget) with given parameters.
 * Parameters:
 *       id: Unique identifier for calendar widget
 * Returns:
 *       A handle to a calendar window or NULL on failure.
 */
HWND dw_calendar_new(unsigned long id)
{
   return 0;
}

/*
 * Sets the current date of a calendar
 * Parameters:
 *       handle: The handle to the calendar returned by dw_calendar_new().
 *       year...
 */
void dw_calendar_set_date(HWND handle, unsigned int year, unsigned int month, unsigned int day)
{
   return;
}

/*
 * Gets the position of a splitbar (pecentage).
 * Parameters:
 *       handle: The handle to the splitbar returned by dw_splitbar_new().
 */
void dw_calendar_get_date(HWND handle, unsigned int *year, unsigned int *month, unsigned int *day)
{
   return;
}

/*
 * Pack windows (widgets) into a box from the start (or top).
 * Parameters:
 *       box: Window handle of the box to be packed into.
 *       item: Window handle of the item to be back.
 *       width: Width in pixels of the item or -1 to be self determined.
 *       height: Height in pixels of the item or -1 to be self determined.
 *       hsize: TRUE if the window (widget) should expand horizontally to fill space given.
 *       vsize: TRUE if the window (widget) should expand vertically to fill space given.
 *       pad: Number of pixels of padding around the item.
 */
void API dw_box_pack_start(HWND box, HWND item, int width, int height, int hsize, int vsize, int pad)
{
}

/*
 * Sets the default focus item for a window/dialog.
 * Parameters:
 *         window: Toplevel window or dialog.
 *         defaultitem: Handle to the dialog item to be default.
 */
void API dw_window_default(HWND window, HWND defaultitem)
{
}

/*
 * Sets window to click the default dialog item when an ENTER is pressed.
 * Parameters:
 *         window: Window (widget) to look for the ENTER press.
 *         next: Window (widget) to move to next (or click)
 */
void API dw_window_click_default(HWND window, HWND next)
{
}

/*
 * Returns some information about the current operating environment.
 * Parameters:
 *       env: Pointer to a DWEnv struct.
 */
void API dw_environment_query(DWEnv *env)
{
   ULONG Build;
   char verbuf[10];

   if(!env)
      return;

   Gestalt(gestaltSystemVersion, &Build);

   sprintf(verbuf, "%04x", (int)Build);

   strcpy(env->osName,"MacOS");
   env->MajorBuild = atoi(&verbuf[3]);
   verbuf[3] = 0;
   env->MinorVersion = atoi(&verbuf[2]);
   verbuf[2] = 0;
   env->MajorVersion = atoi(verbuf);

   env->MinorBuild = 0;

   strcpy(env->buildDate, __DATE__);
   strcpy(env->buildTime, __TIME__);
   env->DWMajorVersion = DW_MAJOR_VERSION;
   env->DWMinorVersion = DW_MINOR_VERSION;
   env->DWSubVersion = DW_SUB_VERSION;
}

/*
 * Opens a file dialog and queries user selection.
 * Parameters:
 *       title: Title bar text for dialog.
 *       defpath: The default path of the open dialog.
 *       ext: Default file extention.
 *       flags: DW_FILE_OPEN or DW_FILE_SAVE.
 * Returns:
 *       NULL on error. A malloced buffer containing
 *       the file path on success.
 *
 */
char * API dw_file_browse(char *title, char *defpath, char *ext, int flags)
{
   return NULL;
}

/*
 * Execute and external program in a seperate session.
 * Parameters:
 *       program: Program name with optional path.
 *       type: Either DW_EXEC_CON or DW_EXEC_GUI.
 *       params: An array of pointers to string arguements.
 * Returns:
 *       -1 on error.
 */
int API dw_exec(char *program, int type, char **params)
{
   return -1;
}

/*
 * Loads a web browser pointed at the given URL.
 * Parameters:
 *       url: Uniform resource locator.
 */
int API dw_browse(char *url)
{
   return -1;
}

/*
 * Returns a pointer to a static buffer which containes the
 * current user directory.  Or the root directory (C:\ on
 * OS/2 and Windows).
 */
char * API dw_user_dir(void)
{
   static char _user_dir[1024] = "";

   if(!_user_dir[0])
   {
      char *home = getenv("HOME");

      if(home)
         strcpy(_user_dir, home);
      else
         strcpy(_user_dir, "/");
   }
   return _user_dir;
}

/*
 * Call a function from the window (widget)'s context.
 * Parameters:
 *       handle: Window handle of the widget.
 *       function: Function pointer to be called.
 *       data: Pointer to the data to be passed to the function.
 */
void API dw_window_function(HWND handle, void *function, void *data)
{
}

/* Functions for managing the user data lists that are associated with
 * a given window handle.  Used in dw_window_set_data() and
 * dw_window_get_data().
 */
static UserData *_find_userdata(UserData **root, char *varname)
{
   UserData *tmp = *root;

   while(tmp)
   {
      if(strcasecmp(tmp->varname, varname) == 0)
         return tmp;
      tmp = tmp->next;
   }
   return NULL;
}

static int _new_userdata(UserData **root, char *varname, void *data)
{
   UserData *new = _find_userdata(root, varname);

   if(new)
   {
      new->data = data;
      return TRUE;
   }
   else
   {
      new = malloc(sizeof(UserData));
      if(new)
      {
         new->varname = strdup(varname);
         new->data = data;

         new->next = NULL;

         if (!*root)
            *root = new;
         else
         {
            UserData *prev = NULL, *tmp = *root;
            while(tmp)
            {
               prev = tmp;
               tmp = tmp->next;
            }
            if(prev)
               prev->next = new;
            else
               *root = new;
         }
         return TRUE;
      }
   }
   return FALSE;
}

static int _remove_userdata(UserData **root, char *varname, int all)
{
   UserData *prev = NULL, *tmp = *root;

   while(tmp)
   {
      if(all || strcasecmp(tmp->varname, varname) == 0)
      {
         if(!prev)
         {
            *root = tmp->next;
            free(tmp->varname);
            free(tmp);
            if(!all)
               return 0;
            tmp = *root;
         }
         else
         {
            /* If all is true we should
             * never get here.
             */
            prev->next = tmp->next;
            free(tmp->varname);
            free(tmp);
            return 0;
         }
      }
      else
      {
         prev = tmp;
         tmp = tmp->next;
      }
   }
   return 0;
}

/*
 * Add a named user data item to a window handle.
 * Parameters:
 *       window: Window handle of signal to be called back.
 *       dataname: A string pointer identifying which signal to be hooked.
 *       data: User data to be passed to the handler function.
 */
void API dw_window_set_data(HWND window, char *dataname, void *data)
{
   WindowData *blah = (WindowData *)_get_window_pointer(window);

   if(!blah)
   {
      if(!dataname)
         return;

      blah = calloc(1, sizeof(WindowData));
      _set_window_pointer(window, blah);
   }

   if(data)
      _new_userdata(&(blah->root), dataname, data);
   else
   {
      if(dataname)
         _remove_userdata(&(blah->root), dataname, FALSE);
      else
         _remove_userdata(&(blah->root), NULL, TRUE);
   }
}

/*
 * Gets a named user data item to a window handle.
 * Parameters:
 *       window: Window handle of signal to be called back.
 *       dataname: A string pointer identifying which signal to be hooked.
 *       data: User data to be passed to the handler function.
 */
void *dw_window_get_data(HWND window, char *dataname)
{
   WindowData *blah = (WindowData *)_get_window_pointer(window);

   if(blah && blah->root && dataname)
   {
      UserData *ud = _find_userdata(&(blah->root), dataname);
      if(ud)
         return ud->data;
   }
   return NULL;
}

/*
 * Add a callback to a timer event.
 * Parameters:
 *       interval: Milliseconds to delay between calls.
 *       sigfunc: The pointer to the function to be used as the callback.
 *       data: User data to be passed to the handler function.
 * Returns:
 *       Timer ID for use with dw_timer_disconnect(), 0 on error.
 */
int API dw_timer_connect(int interval, void *sigfunc, void *data)
{
   return 0;
}

/*
 * Removes timer callback.
 * Parameters:
 *       id: Timer ID returned by dw_timer_connect().
 */
void API dw_timer_disconnect(int id)
{
   SignalHandler *prev = NULL, *tmp = Root;

   /* 0 is an invalid timer ID */
   if(!id)
      return;

   while(tmp)
   {
      if(tmp->id == id)
      {
         if(prev)
         {
            prev->next = tmp->next;
            free(tmp);
            tmp = prev->next;
         }
         else
         {
            Root = tmp->next;
            free(tmp);
            tmp = Root;
         }
      }
      else
      {
         prev = tmp;
         tmp = tmp->next;
      }
   }
}

/*
 * Add a callback to a window event.
 * Parameters:
 *       window: Window handle of signal to be called back.
 *       signame: A string pointer identifying which signal to be hooked.
 *       sigfunc: The pointer to the function to be used as the callback.
 *       data: User data to be passed to the handler function.
 */
void API dw_signal_connect(HWND window, char *signame, void *sigfunc, void *data)
{
   ULONG message = 0L;

   if(window && signame && sigfunc)
   {
      if((message = _findsigmessage(signame)) != 0)
         _new_signal(message, window, 0, sigfunc, data);
   }
}

/*
 * Removes callbacks for a given window with given name.
 * Parameters:
 *       window: Window handle of callback to be removed.
 */
void API dw_signal_disconnect_by_name(HWND window, char *signame)
{
   SignalHandler *prev = NULL, *tmp = Root;
   ULONG message;

   if(!window || !signame || (message = _findsigmessage(signame)) == 0)
      return;

   while(tmp)
   {
      if(tmp->window == window && tmp->message == message)
      {
         if(prev)
         {
            prev->next = tmp->next;
            free(tmp);
            tmp = prev->next;
         }
         else
         {
            Root = tmp->next;
            free(tmp);
            tmp = Root;
         }
      }
      else
      {
         prev = tmp;
         tmp = tmp->next;
      }
   }
}

/*
 * Removes all callbacks for a given window.
 * Parameters:
 *       window: Window handle of callback to be removed.
 */
void API dw_signal_disconnect_by_window(HWND window)
{
   SignalHandler *prev = NULL, *tmp = Root;

   while(tmp)
   {
      if(tmp->window == window)
      {
         if(prev)
         {
            prev->next = tmp->next;
            free(tmp);
            tmp = prev->next;
         }
         else
         {
            Root = tmp->next;
            free(tmp);
            tmp = Root;
         }
      }
      else
      {
         prev = tmp;
         tmp = tmp->next;
      }
   }
}

/*
 * Removes all callbacks for a given window with specified data.
 * Parameters:
 *       window: Window handle of callback to be removed.
 *       data: Pointer to the data to be compared against.
 */
void API dw_signal_disconnect_by_data(HWND window, void *data)
{
   SignalHandler *prev = NULL, *tmp = Root;

   while(tmp)
   {
      if(tmp->window == window && tmp->data == data)
      {
         if(prev)
         {
            prev->next = tmp->next;
            free(tmp);
            tmp = prev->next;
         }
         else
         {
            Root = tmp->next;
            free(tmp);
            tmp = Root;
         }
      }
      else
      {
         prev = tmp;
         tmp = tmp->next;
      }
   }
}