blind fix for wxGIFDecoder::ReadGIF

[wxWidgets.git] / src / msw / icon.cpp

diff --git a/src/msw/icon.cpp b/src/msw/icon.cpp
index 03fe2ebb138cc94e87fe9865491257b2d9fcda3d..8f27b61324cc5c1ff31636b0591e08296c2a4a04 100644 (file)
--- a/src/msw/icon.cpp
+++ b/src/msw/icon.cpp
@@ -35,6 +35,7 @@
     #include "wx/app.h"
     #include "wx/icon.h"
     #include "wx/bitmap.h"
+    #include "wx/log.h"
 #endif
 
 #include "wx/msw/private.h"
@@ -62,7 +63,9 @@ void wxIconRefData::Free()
 {
     if ( m_hIcon )
     {
+#ifndef __WXMICROWIN__
         ::DestroyIcon((HICON) m_hIcon);
+#endif
 
         m_hIcon = 0;
     }
@@ -93,6 +96,7 @@ wxIcon::~wxIcon()
 
 void wxIcon::CopyFromBitmap(const wxBitmap& bmp)
 {
+#ifndef __WXMICROWIN__
 #ifdef __WIN32__
     wxMask *mask = bmp.GetMask();
     if ( !mask )
@@ -107,10 +111,26 @@ void wxIcon::CopyFromBitmap(const wxBitmap& bmp)
     iconInfo.hbmMask = wxInvertMask((HBITMAP)mask->GetMaskBitmap());
     iconInfo.hbmColor = GetHbitmapOf(bmp);
 
+    /* GRG: black out the transparent area to preserve background
+     * colour, because Windows blits the original bitmap using
+     * SRCINVERT (XOR) after applying the mask to the dest rect.
+     */
+    HDC dcSrc = ::CreateCompatibleDC(NULL);
+    HDC dcDst = ::CreateCompatibleDC(NULL);
+    SelectObject(dcSrc, (HBITMAP)mask->GetMaskBitmap());
+    SelectObject(dcDst, iconInfo.hbmColor);
+
+    BitBlt(dcDst, 0, 0, bmp.GetWidth(), bmp.GetHeight(), dcSrc, 0, 0, SRCAND);
+
+    SelectObject(dcDst, NULL);
+    SelectObject(dcSrc, NULL);
+    DeleteDC(dcDst);
+    DeleteDC(dcSrc);
+
     HICON hicon = ::CreateIconIndirect(&iconInfo);
     if ( !hicon )
     {
-        wxLogLastError("CreateIconIndirect");
+        wxLogLastError(wxT("CreateIconIndirect"));
     }
     else
     {
@@ -126,8 +146,18 @@ void wxIcon::CopyFromBitmap(const wxBitmap& bmp)
 #else // Win16
     // there are some functions in curico.cpp which probably could be used
     // here...
-    wxFAIL_MSG("not implemented");
+    // This probably doesn't work.
+    HBITMAP hBitmap = (HBITMAP) bmp.GetHBITMAP();
+    HICON hIcon = MakeIconFromBitmap((HINSTANCE) wxGetInstance(), hBitmap);
+    if (hIcon)
+    {
+        SetHICON((WXHICON)hIcon);
+        SetSize(bmp.GetWidth(), bmp.GetHeight());
+    }
+
+//    wxFAIL_MSG("Bitmap to icon conversion (including use of XPMs for icons) not implemented");
 #endif // Win32/16
+#endif
 }
 
 void wxIcon::CreateIconFromXpm(const char **data)