Mercurial > dwindows
annotate win/XBrowseForFolder.cpp @ 1934:487fd711bf3f
Mac: Fix deprecation warning in the 10.13 SDK.
author | bsmith@81767d24-ef19-dc11-ae90-00e081727c95 |
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date | Wed, 18 Oct 2017 17:26:39 +0000 |
parents | f8d1da63fb77 |
children | d39f4f9bed26 |
rev | line source |
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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); |
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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 { |
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238 if (fp->lpszInitialFolder && fp->lpszInitialFolder[0]) |
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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]) |
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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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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 |
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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 |
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358 if (!szInitialPath[0] && !bi.pidlRoot) |
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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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362 szInitialPath); |
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363 } |
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364 |
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365 FOLDER_PROPS fp; |
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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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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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379 |
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380 BOOL bRet = FALSE; |
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381 |
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382 LPITEMIDLIST pidlFolder = SHBrowseForFolder(&bi); |
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383 |
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384 if (pidlFolder) |
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385 { |
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386 TCHAR szBuffer[MAX_PATH*2] = { 0 }; |
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387 |
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388 if (SHGetPathFromIDList(pidlFolder, szBuffer)) |
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389 { |
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390 _tcsncpy(lpszBuf, szBuffer, dwBufSize-1); |
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391 bRet = TRUE; |
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392 } |
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393 } |
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394 |
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395 // free up pidls |
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396 IMalloc *pMalloc = NULL; |
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397 if (SUCCEEDED(SHGetMalloc(&pMalloc)) && pMalloc) |
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398 { |
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399 if (pidlFolder) |
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400 pMalloc->Free(pidlFolder); |
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401 if (pidlRoot) |
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402 pMalloc->Free(pidlRoot); |
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403 pMalloc->Release(); |
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404 } |
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405 |
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406 return bRet; |
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407 } |