use mask for GIFs (part of patch 649438)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@21815 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

diff --git a/src/html/m_image.cpp b/src/html/m_image.cpp
index bc85ae290b3f8a5a83ce0ada993b7d43e96b6a33..3a24f08ecbb15dfebea13fded371c3668db39435 100644 (file)
--- a/src/html/m_image.cpp
+++ b/src/html/m_image.cpp
@@ -500,7 +500,8 @@ void wxHtmlImageCell::AdvanceAnimation(wxTimer *timer)
             wxBitmap bmp(img);
             wxMemoryDC dc;
             dc.SelectObject(*m_bitmap);
-            dc.DrawBitmap(bmp, m_gifDecoder->GetLeft(), m_gifDecoder->GetTop());
+            dc.DrawBitmap(bmp, m_gifDecoder->GetLeft(), m_gifDecoder->GetTop(),
+                          TRUE /* use mask */);
         }
         else
             SetImage(img);