rendercontext: Per-widget double-buffering for the cases we know that work.

Uses a variable, not a virtual method, as any change would need a large
re-compile.

Change-Id: I103669b139a82137c5d346ab8c9459483d358f2b

1 files changed, 2 insertions, 1 deletions

diff --git a/vcl/inc/window.h b/vcl/inc/window.h
index d73f3e10a3bc..48fea9eb74d8 100644
--- a/vcl/inc/window.h
+++ b/vcl/inc/window.h
@@ -368,7 +368,8 @@ public:
                         mbExpand:1,
                         mbFill:1,
                         mbSecondary:1,
-                        mbNonHomogeneous:1;
+                        mbNonHomogeneous:1,
+                        mbDoubleBuffering:1;
 
     vcl::RenderSettings maRenderSettings;