add support for alpha in color dialog on OSX, see #14127

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

diff --git a/src/msw/cursor.cpp b/src/msw/cursor.cpp
index bb932667b1b9d378a063b5686f9a08b4b761d37e..ec9b67c9690cbf01d3a48be504bcb679c05eb30c 100644 (file)
--- a/src/msw/cursor.cpp
+++ b/src/msw/cursor.cpp
@@ -240,6 +240,7 @@ wxCursor::wxCursor(const wxString& filename,
             break;
 
 #ifndef __WXWINCE__
+        case wxBITMAP_TYPE_ANI:
         case wxBITMAP_TYPE_CUR:
             hcursor = ::LoadCursorFromFile(filename.t_str());
             break;
@@ -275,6 +276,45 @@ wxCursor::wxCursor(const wxString& filename,
     }
 }
 
+namespace
+{
+
+void ReverseBitmap(HBITMAP bitmap, int width, int height)
+{
+    MemoryHDC hdc;
+    SelectInHDC selBitmap(hdc, bitmap);
+    ::StretchBlt(hdc, width - 1, 0, -width, height,
+                 hdc, 0, 0, width, height, SRCCOPY);
+}
+
+HCURSOR CreateReverseCursor(HCURSOR cursor)
+{
+    ICONINFO info;
+    if ( !::GetIconInfo(cursor, &info) )
+        return NULL;
+
+    HCURSOR cursorRev = NULL;
+
+    BITMAP bmp;
+    if ( ::GetObject(info.hbmMask, sizeof(bmp), &bmp) )
+    {
+        ReverseBitmap(info.hbmMask, bmp.bmWidth, bmp.bmHeight);
+        if ( info.hbmColor )
+            ReverseBitmap(info.hbmColor, bmp.bmWidth, bmp.bmHeight);
+        info.xHotspot = (DWORD)bmp.bmWidth - 1 - info.xHotspot;
+
+        cursorRev = ::CreateIconIndirect(&info);
+    }
+
+    ::DeleteObject(info.hbmMask);
+    if ( info.hbmColor )
+        ::DeleteObject(info.hbmColor);
+
+    return cursorRev;
+}
+
+} // anonymous namespace
+
 // Cursors by stock number
 void wxCursor::InitFromStock(wxStockCursor idCursor)
 {
@@ -339,6 +379,16 @@ void wxCursor::InitFromStock(wxStockCursor idCursor)
         deleteLater = true;
     }
 
+    if ( !hcursor && idCursor == wxCURSOR_RIGHT_ARROW)
+    {
+        hcursor = ::LoadCursor(NULL, IDC_ARROW);
+        if ( hcursor )
+        {
+            hcursor = CreateReverseCursor(hcursor);
+            deleteLater = true;
+        }
+    }
+
     if ( !hcursor )
     {
         if ( !stdCursor.isStd )