X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/57bd4c6031d438f11af0ec540136f49a928b923c..026ff75b753dc53088b1ed7b58227945d93d78c5:/src/msw/imaglist.cpp

diff --git a/src/msw/imaglist.cpp b/src/msw/imaglist.cpp
index 2b3cfb5c58..317bc0f788 100644
--- a/src/msw/imaglist.cpp
+++ b/src/msw/imaglist.cpp
@@ -37,7 +37,7 @@
     #include <stdio.h>
 #endif
 
-#include "wx/msw/imaglist.h"
+#include "wx/imaglist.h"
 #include "wx/msw/private.h"
 
 // ----------------------------------------------------------------------------
@@ -228,15 +228,7 @@ bool wxImageList::Remove(int index)
 bool wxImageList::RemoveAll()
 {
     // don't use ImageList_RemoveAll() because mingw32 headers don't have it
-    int count = ImageList_GetImageCount(GetHImageList());
-    for ( int i = 0; i < count; i++ )
-    {
-        // the image indexes are shifted, so we should always remove the first
-        // one
-        (void)Remove(0);
-    }
-
-    return true;
+    return Remove(-1);
 }
 
 // Draws the given image on a dc at the specified position.
@@ -348,6 +340,10 @@ wxIcon wxImageList::GetIcon(int index) const
 
 static HBITMAP GetMaskForImage(const wxBitmap& bitmap, const wxBitmap& mask)
 {
+#if wxUSE_IMAGE
+    wxBitmap bitmapWithMask;
+#endif // wxUSE_IMAGE
+
     HBITMAP hbmpMask;
     wxMask *pMask;
     bool deleteMask = false;
@@ -360,6 +356,23 @@ static HBITMAP GetMaskForImage(const wxBitmap& bitmap, const wxBitmap& mask)
     else
     {
         pMask = bitmap.GetMask();
+
+#if wxUSE_IMAGE
+        // check if we don't have alpha in this bitmap -- we can create a mask
+        // from it (and we need to do it for the older systems which don't
+        // support 32bpp bitmaps natively)
+        if ( !pMask )
+        {
+            wxImage img(bitmap.ConvertToImage());
+            if ( img.HasAlpha() )
+            {
+                img.ConvertAlphaToMask();
+                bitmapWithMask = wxBitmap(img);
+                pMask = bitmapWithMask.GetMask();
+            }
+        }
+#endif // wxUSE_IMAGE
+
         if ( !pMask )
         {
             // use the light grey count as transparent: the trouble here is