diff -r 15bf7259bb7c -r d8a3531bc6b8 uiacceltk/hitchcock/coretoolkit/src/huicanvaswsswgc.cpp
--- a/uiacceltk/hitchcock/coretoolkit/src/huicanvaswsswgc.cpp	Tue Feb 02 07:56:43 2010 +0200
+++ b/uiacceltk/hitchcock/coretoolkit/src/huicanvaswsswgc.cpp	Mon Feb 22 17:57:49 2010 +0200
@@ -1325,8 +1325,8 @@
 	
 TDisplayMode CHuiCanvasWsSwGc::SelectDisplayMode()
     {
-    TDisplayMode mode = EColor16MA;
-        
+    TDisplayMode mode = EColor16MAP;
+    
     // Note 64K mode cannot be used until separate mask is supported. It might be
     // possible to generate according to dirty region ?
     
@@ -1477,6 +1477,8 @@
         return;
         }
     
+    iBitGc->Reset();
+    
     if (aClear)
         {
         if (iDefaultClipRegion.Count())