+ // Convert the region to a B&W bitmap with the white pixels being inside
+ // the region.
+ wxBitmap ConvertToBitmap() const;
+
+ // Use the non-transparent pixels of a wxBitmap for the region to combine
+ // with this region. If the bitmap has a mask then it will be used,
+ // otherwise the colour to be treated as transparent may be specified,
+ // along with an optional tolerance value.
+ bool Union(const wxBitmap& bmp,
+ const wxColour& transColour = wxNullColour,
+ int tolerance = 0);
+