Mercurial > dwindows

annotate win/XBrowseForFolder.cpp @ 1617:f8d1da63fb77

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Add code to allow building DW.DLL as Unicode on Windows. DWCOMPAT.DLL currently is still built ANSI for now. Will add -DUNICODE and -D_UNICODE to the flags when it is stable.
author bsmith@81767d24-ef19-dc11-ae90-00e081727c95
date Tue, 27 Mar 2012 08:51:14 +0000
parents 412af8059331
children d39f4f9bed26
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1 // XBrowseForFolder.cpp Version 1.2
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2 //
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3 // Author: Hans Dietrich
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4 // hdietrich@gmail.com
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5 //
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6 // Description:
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7 // XBrowseForFolder.cpp implements XBrowseForFolder(), a function that
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8 // wraps SHBrowseForFolder().
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9 //
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10 // History
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11 // Version 1.2 - 2008 February 29
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12 // - Changed API to allow for initial CSIDL.
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13 // - Added option to set dialog caption, suggested by SimpleDivX.
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14 // - Added option to set root, suggested by Jean-Michel Reghem.
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15 //
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16 // Version 1.1 - 2003 September 29 (not released)
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17 // - Added support for edit box
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18 //
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19 // Version 1.0 - 2003 September 25
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20 // - Initial public release
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21 //
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22 // License:
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23 // This software is released into the public domain. You are free to use
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24 // it in any way you like, except that you may not sell this source code.
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25 //
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26 // This software is provided "as is" with no expressed or implied warranty.
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27 // I accept no liability for any damage or loss of business that this
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28 // software may cause.
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29 //
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30 ///////////////////////////////////////////////////////////////////////////////
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31
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32 /* Make sure we get the right version */
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33 #define _WIN32_IE 0x0500
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34
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35 #ifndef __AFX_H__
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36 #include <windows.h>
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37 #include <tchar.h>
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38 #endif
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39
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40 #include <Shlobj.h>
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41 #include <io.h>
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42 #include "XBrowseForFolder.h"
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43
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44 #ifndef __MINGW32__
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45 #pragma warning(disable: 4127) // conditional expression is constant (_ASSERTE)
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46 #pragma warning(disable : 4996) // disable bogus deprecation warning
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47 #endif
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48
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49 /* MingW does not have this */
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50 #if !defined(BIF_NONEWFOLDERBUTTON)
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51 # define BIF_NONEWFOLDERBUTTON 0x200
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52 #endif
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53
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54 //=============================================================================
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55 // struct to pass to callback function
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56 //=============================================================================
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57 struct FOLDER_PROPS
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58 {
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59 LPCTSTR lpszTitle;
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60 LPCTSTR lpszInitialFolder;
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61 UINT ulFlags;
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62 };
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63
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64 #ifndef __AFX_H__
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65
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66 ///////////////////////////////////////////////////////////////////////////////
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67 // CRect - a minimal CRect class
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68
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69 class CRect : public tagRECT
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70 {
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71 public:
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72 //CRect() { }
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73 CRect(int l = 0, int t = 0, int r = 0, int b = 0)
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74 {
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75 left = l;
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76 top = t;
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77 right = r;
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78 bottom = b;
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79 }
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80 int Width() const { return right - left; }
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81 int Height() const { return bottom - top; }
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82 void SwapLeftRight() { SwapLeftRight(LPRECT(this)); }
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83 static void SwapLeftRight(LPRECT lpRect) { LONG temp = lpRect->left;
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84 lpRect->left = lpRect->right;
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85 lpRect->right = temp; }
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86 operator LPRECT() { return this; }
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87 };
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88 #endif
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89
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90 ///////////////////////////////////////////////////////////////////////////////
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91 // ScreenToClientX - helper function in case non-MFC
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92 static void ScreenToClientX(HWND hWnd, LPRECT lpRect)
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93 {
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94 ::ScreenToClient(hWnd, (LPPOINT)lpRect);
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95 ::ScreenToClient(hWnd, ((LPPOINT)lpRect)+1);
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96 }
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97
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98 ///////////////////////////////////////////////////////////////////////////////
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99 // MoveWindowX - helper function in case non-MFC
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100 static void MoveWindowX(HWND hWnd, CRect& rect, BOOL bRepaint)
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101 {
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102 ::MoveWindow(hWnd, rect.left, rect.top,
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103 rect.Width(), rect.Height(), bRepaint);
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104 }
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105
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106 ///////////////////////////////////////////////////////////////////////////////
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107 // SizeBrowseDialog - resize dialog, move controls
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108 static void SizeBrowseDialog(HWND hWnd, FOLDER_PROPS *fp)
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109 {
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110 // find the folder tree and make dialog larger
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111 HWND hwndTree = FindWindowEx(hWnd, NULL, TEXT("SysTreeView32"), NULL);
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112
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113 if (!hwndTree)
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114 {
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115 // ... this usually means that BIF_NEWDIALOGSTYLE is enabled.
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116 // Then the class name is as used in the code below.
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117 hwndTree = FindWindowEx(hWnd, NULL, TEXT("SHBrowseForFolder ShellNameSpace Control"), NULL);
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118 }
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119
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120 CRect rectDlg;
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121
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122 if (hwndTree)
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123 {
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124 // check if edit box
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125 int nEditHeight = 0;
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126 HWND hwndEdit = FindWindowEx(hWnd, NULL, TEXT("Edit"), NULL);
632
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127 CRect rectEdit;
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128 if (hwndEdit && (fp->ulFlags & BIF_EDITBOX))
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129 {
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130 ::GetWindowRect(hwndEdit, &rectEdit);
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131 ScreenToClientX(hWnd, &rectEdit);
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132 nEditHeight = rectEdit.Height();
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133 }
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134 else if (hwndEdit)
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135 {
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136 ::MoveWindow(hwndEdit, 20000, 20000, 10, 10, FALSE);
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137 ::ShowWindow(hwndEdit, SW_HIDE);
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138 hwndEdit = 0;
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139 }
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140
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141 // make the dialog larger
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142 ::GetWindowRect(hWnd, &rectDlg);
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143 rectDlg.right += 40;
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144 rectDlg.bottom += 30;
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145 if (hwndEdit)
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146 rectDlg.bottom += nEditHeight + 5;
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147 MoveWindowX(hWnd, rectDlg, TRUE);
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148 ::GetClientRect(hWnd, &rectDlg);
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149
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150 int hMargin = 10;
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151 int vMargin = 10;
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152
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153 // check if new dialog style - this means that there will be a resizing
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154 // grabber in lower right corner
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155 if (fp->ulFlags & BIF_NEWDIALOGSTYLE)
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156 hMargin = ::GetSystemMetrics(SM_CXVSCROLL);
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157
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158 // move the Cancel button
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159 CRect rectCancel;
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160 HWND hwndCancel = ::GetDlgItem(hWnd, IDCANCEL);
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161 if (hwndCancel)
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162 ::GetWindowRect(hwndCancel, &rectCancel);
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163 ScreenToClientX(hWnd, &rectCancel);
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164 int h = rectCancel.Height();
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165 int w = rectCancel.Width();
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166 rectCancel.bottom = rectDlg.bottom - vMargin;//nMargin;
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167 rectCancel.top = rectCancel.bottom - h;
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168 rectCancel.right = rectDlg.right - hMargin; //(scrollWidth + 2*borderWidth);
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169 rectCancel.left = rectCancel.right - w;
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170 if (hwndCancel)
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171 {
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172 MoveWindowX(hwndCancel, rectCancel, FALSE);
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173 }
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174
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175 // move the OK button
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176 CRect rectOK(0, 0, 0, 0);
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177 HWND hwndOK = ::GetDlgItem(hWnd, IDOK);
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178 if (hwndOK)
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179 ::GetWindowRect(hwndOK, &rectOK);
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180 ScreenToClientX(hWnd, &rectOK);
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181 rectOK.bottom = rectCancel.bottom;
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182 rectOK.top = rectCancel.top;
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183 rectOK.right = rectCancel.left - 10;
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184 rectOK.left = rectOK.right - w;
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185 if (hwndOK)
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186 {
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187 MoveWindowX(hwndOK, rectOK, FALSE);
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188 }
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189
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190 // expand the folder tree to fill the dialog
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191 CRect rectTree;
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192 ::GetWindowRect(hwndTree, &rectTree);
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193 ScreenToClientX(hWnd, &rectTree);
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194 if (hwndEdit)
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195 {
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196 rectEdit.left = hMargin;
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197 rectEdit.right = rectDlg.right - hMargin;
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198 rectEdit.top = vMargin;
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199 rectEdit.bottom = rectEdit.top + nEditHeight;
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200 MoveWindowX(hwndEdit, rectEdit, FALSE);
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201 rectTree.top = rectEdit.bottom + 5;
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202 }
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203 else
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204 {
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205 rectTree.top = vMargin;
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206 }
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207 rectTree.left = hMargin;
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208 rectTree.bottom = rectOK.top - 10;//nMargin;
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209 rectTree.right = rectDlg.right - hMargin;
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210 MoveWindowX(hwndTree, rectTree, FALSE);
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211 }
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212 }
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213
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214 ///////////////////////////////////////////////////////////////////////////////
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215 // BrowseCallbackProc - SHBrowseForFolder callback function
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216 static int CALLBACK BrowseCallbackProc(HWND hWnd, // Window handle to the browse dialog box
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217 UINT uMsg, // Value identifying the event
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218 LPARAM lParam, // Value dependent upon the message
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219 LPARAM lpData) // Application-defined value that was
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220 // specified in the lParam member of the
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221 // BROWSEINFO structure
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222 {
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223 switch (uMsg)
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224 {
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225 case BFFM_INITIALIZED: // sent when the browse dialog box has finished initializing.
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226 {
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227 // remove context help button from dialog caption
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228 LONG lStyle = ::GetWindowLong(hWnd, GWL_STYLE);
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229 lStyle &= ~DS_CONTEXTHELP;
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230 ::SetWindowLong(hWnd, GWL_STYLE, lStyle);
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231 lStyle = ::GetWindowLong(hWnd, GWL_EXSTYLE);
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232 lStyle &= ~WS_EX_CONTEXTHELP;
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233 ::SetWindowLong(hWnd, GWL_EXSTYLE, lStyle);
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234
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235 FOLDER_PROPS *fp = (FOLDER_PROPS *) lpData;
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236 if (fp)
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237 {
1617
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238 if (fp->lpszInitialFolder && fp->lpszInitialFolder[0])
632
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239 {
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240 // set initial directory
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241 ::SendMessage(hWnd, BFFM_SETSELECTION, TRUE, (LPARAM)fp->lpszInitialFolder);
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242 }
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243
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244 if (fp->lpszTitle && fp->lpszTitle[0])
632
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245 {
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246 // set window caption
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247 ::SetWindowText(hWnd, fp->lpszTitle);
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248 }
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249 }
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250
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251 SizeBrowseDialog(hWnd, fp);
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252 }
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253 break;
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254
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255 case BFFM_SELCHANGED: // sent when the selection has changed
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256 {
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257 TCHAR szDir[MAX_PATH*2] = { 0 };
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258
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259 // fail if non-filesystem
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260 BOOL bRet = SHGetPathFromIDList((LPITEMIDLIST) lParam, szDir);
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261 if (bRet)
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262 {
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263 // fail if folder not accessible
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264 if (_taccess(szDir, 00) != 0)
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265 {
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266 bRet = FALSE;
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267 }
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268 else
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269 {
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270 SHFILEINFO sfi;
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271 ::SHGetFileInfo((LPCTSTR)lParam, 0, &sfi, sizeof(sfi),
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272 SHGFI_PIDL | SHGFI_ATTRIBUTES);
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273
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274 // fail if pidl is a link
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275 if (sfi.dwAttributes & SFGAO_LINK)
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276 {
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277 bRet = FALSE;
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278 }
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279 }
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280 }
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281
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282 // if invalid selection, disable the OK button
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283 if (!bRet)
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284 {
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285 ::EnableWindow(GetDlgItem(hWnd, IDOK), FALSE);
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286 }
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287 }
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288 break;
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289 }
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290
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291 return 0;
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292 }
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293
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294 ///////////////////////////////////////////////////////////////////////////////
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295 //
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296 // XBrowseForFolder()
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297 //
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298 // Purpose: Invoke the SHBrowseForFolder API. If lpszInitialFolder is
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299 // supplied, it will be the folder initially selected in the tree
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300 // folder list. Otherwise, the initial folder will be set to the
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301 // current directory. The selected folder will be returned in
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302 // lpszBuf.
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303 //
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304 // Parameters: hWnd - handle to the owner window for the dialog
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305 // lpszInitialFolder - initial folder in tree; if NULL, the initial
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306 // folder will be the current directory; if
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307 // if this is a CSIDL, must be a real folder.
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308 // nRootFolder - optional CSIDL of root folder for tree;
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309 // -1 = use default.
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310 // lpszCaption - optional caption for folder dialog
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311 // lpszBuf - buffer for the returned folder path
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312 // dwBufSize - size of lpszBuf in TCHARs
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313 // bEditBox - TRUE = include edit box in dialog
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314 //
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315 // Returns: BOOL - TRUE = success; FALSE = user hit Cancel
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316 //
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317 BOOL _cdecl XBrowseForFolder(HWND hWnd,
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318 LPCTSTR lpszInitialFolder,
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319 int nRootFolder,
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320 LPCTSTR lpszCaption,
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321 LPTSTR lpszBuf,
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322 DWORD dwBufSize,
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323 BOOL bEditBox /*= FALSE*/)
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324 {
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325 if (lpszBuf == NULL || dwBufSize < MAX_PATH)
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326 return FALSE;
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327
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328 ZeroMemory(lpszBuf, dwBufSize*sizeof(TCHAR));
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329
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330 BROWSEINFO bi = { 0 };
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331
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332 // check if there is a special root folder
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333 LPITEMIDLIST pidlRoot = NULL;
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334 if (nRootFolder != -1)
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335 {
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mhessling@81767d24-ef19-dc11-ae90-00e081727c95
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336 if (SUCCEEDED(SHGetSpecialFolderLocation(hWnd, nRootFolder, &pidlRoot)))
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337 bi.pidlRoot = pidlRoot;
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338 }
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339
1617
f8d1da63fb77 Add code to allow building DW.DLL as Unicode on Windows.
bsmith@81767d24-ef19-dc11-ae90-00e081727c95
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diff changeset
340 TCHAR szInitialPath[MAX_PATH*2] = { 0 };
632
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341 if (lpszInitialFolder)
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342 {
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343 // is this a folder path string or a csidl?
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344 if (HIWORD(lpszInitialFolder) == 0)
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345 {
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346 // csidl
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347 int nFolder = LOWORD((UINT)(UINT_PTR)lpszInitialFolder);
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348 SHGetSpecialFolderPath(hWnd, szInitialPath, nFolder, FALSE);
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349 }
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350 else
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351 {
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352 // string
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353 _tcsncpy(szInitialPath, lpszInitialFolder,
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354 sizeof(szInitialPath)/sizeof(TCHAR)-2);
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355 }
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356 }
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357
1617
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bsmith@81767d24-ef19-dc11-ae90-00e081727c95
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diff changeset
358 if (!szInitialPath[0] && !bi.pidlRoot)
632
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359 {
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360 // no initial folder and no root, set to current directory
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361 ::GetCurrentDirectory(sizeof(szInitialPath)/sizeof(TCHAR)-2,
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mhessling@81767d24-ef19-dc11-ae90-00e081727c95
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362 szInitialPath);
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363 }
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diff changeset
364
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365 FOLDER_PROPS fp;
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diff changeset
366
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367 bi.hwndOwner = hWnd;
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368 bi.ulFlags = BIF_RETURNONLYFSDIRS; // do NOT use BIF_NEWDIALOGSTYLE,
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369 // or BIF_STATUSTEXT
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370 if (bEditBox)
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371 bi.ulFlags |= BIF_EDITBOX;
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372 bi.ulFlags |= BIF_NONEWFOLDERBUTTON;
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373 bi.lpfn = BrowseCallbackProc;
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374 bi.lParam = (LPARAM) &fp;
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diff changeset
375
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376 fp.lpszInitialFolder = szInitialPath;
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377 fp.lpszTitle = lpszCaption;
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378 fp.ulFlags = bi.ulFlags;
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diff changeset
379
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380 BOOL bRet = FALSE;
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diff changeset
381
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mhessling@81767d24-ef19-dc11-ae90-00e081727c95
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382 LPITEMIDLIST pidlFolder = SHBrowseForFolder(&bi);
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mhessling@81767d24-ef19-dc11-ae90-00e081727c95
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383
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mhessling@81767d24-ef19-dc11-ae90-00e081727c95
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384 if (pidlFolder)
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mhessling@81767d24-ef19-dc11-ae90-00e081727c95
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385 {
1617
f8d1da63fb77 Add code to allow building DW.DLL as Unicode on Windows.
bsmith@81767d24-ef19-dc11-ae90-00e081727c95
parents: 1362
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386 TCHAR szBuffer[MAX_PATH*2] = { 0 };
632
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mhessling@81767d24-ef19-dc11-ae90-00e081727c95
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387
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mhessling@81767d24-ef19-dc11-ae90-00e081727c95
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388 if (SHGetPathFromIDList(pidlFolder, szBuffer))
bf3a6d596cd4 Use better directory browser widget.
mhessling@81767d24-ef19-dc11-ae90-00e081727c95
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389 {
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mhessling@81767d24-ef19-dc11-ae90-00e081727c95
parents:
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390 _tcsncpy(lpszBuf, szBuffer, dwBufSize-1);
bf3a6d596cd4 Use better directory browser widget.
mhessling@81767d24-ef19-dc11-ae90-00e081727c95
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391 bRet = TRUE;
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mhessling@81767d24-ef19-dc11-ae90-00e081727c95
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392 }
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mhessling@81767d24-ef19-dc11-ae90-00e081727c95
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393 }
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mhessling@81767d24-ef19-dc11-ae90-00e081727c95
parents:
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394
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mhessling@81767d24-ef19-dc11-ae90-00e081727c95
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395 // free up pidls
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mhessling@81767d24-ef19-dc11-ae90-00e081727c95
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396 IMalloc *pMalloc = NULL;
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mhessling@81767d24-ef19-dc11-ae90-00e081727c95
parents:
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397 if (SUCCEEDED(SHGetMalloc(&pMalloc)) && pMalloc)
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mhessling@81767d24-ef19-dc11-ae90-00e081727c95
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398 {
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mhessling@81767d24-ef19-dc11-ae90-00e081727c95
parents:
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399 if (pidlFolder)
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mhessling@81767d24-ef19-dc11-ae90-00e081727c95
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400 pMalloc->Free(pidlFolder);
bf3a6d596cd4 Use better directory browser widget.
mhessling@81767d24-ef19-dc11-ae90-00e081727c95
parents:
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401 if (pidlRoot)
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mhessling@81767d24-ef19-dc11-ae90-00e081727c95
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402 pMalloc->Free(pidlRoot);
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mhessling@81767d24-ef19-dc11-ae90-00e081727c95
parents:
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403 pMalloc->Release();
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mhessling@81767d24-ef19-dc11-ae90-00e081727c95
parents:
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404 }
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mhessling@81767d24-ef19-dc11-ae90-00e081727c95
parents:
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405
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mhessling@81767d24-ef19-dc11-ae90-00e081727c95
parents:
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406 return bRet;
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mhessling@81767d24-ef19-dc11-ae90-00e081727c95
parents:
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407 }