flicker reduction on gtk

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@43229 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

diff --git a/src/aui/tabmdi.cpp b/src/aui/tabmdi.cpp
index c216c63588868c7e67ed65a2715c86a1aee40f76..f4e2eaacac129b05deff2722e30113ae1bfff3ee 100644 (file)
--- a/src/aui/tabmdi.cpp
+++ b/src/aui/tabmdi.cpp
@@ -401,7 +401,14 @@ bool wxAuiMDIChildFrame::Create(wxAuiMDIParentFrame* parent,
     wxAuiMDIClientWindow* pClientWindow = parent->GetClientWindow();
     wxASSERT_MSG((pClientWindow != (wxWindow*) NULL), wxT("Missing MDI client window."));
 
     wxAuiMDIClientWindow* pClientWindow = parent->GetClientWindow();
     wxASSERT_MSG((pClientWindow != (wxWindow*) NULL), wxT("Missing MDI client window."));
 

-    wxPanel::Create(pClientWindow, id, wxDefaultPosition, size, style|wxNO_BORDER, name);
+    wxSize cli_size = pClientWindow->GetClientSize();
+
+    // create the window off-screen to prevent flicker
+    wxPanel::Create(pClientWindow,
+                   id,
+                   wxPoint(cli_size.x+1, cli_size.y+1),
+                   size,
+                   style|wxNO_BORDER, name);

 
     SetMDIParentFrame(parent);
 
 
     SetMDIParentFrame(parent);