From 8ceeb6c2e004e9fd9ad79d81c074147f831988be Mon Sep 17 00:00:00 2001
From: Stefan Csomor <csomor@advancedconcepts.ch>
Date: Thu, 4 Jun 2009 04:25:39 +0000
Subject: [PATCH] avoid overdrawing, fixes #10865

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@60886 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
---
 src/osx/carbon/window.cpp | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/src/osx/carbon/window.cpp b/src/osx/carbon/window.cpp
index 875b62a41e..b3d85ada77 100644
--- a/src/osx/carbon/window.cpp
+++ b/src/osx/carbon/window.cpp
@@ -184,7 +184,6 @@ static pascal OSStatus wxMacWindowControlEventHandler( EventHandlerCallRef handl
 #endif
 
                 {
-                    bool created = false ;
                     CGContextRef cgContext = NULL ;
                     OSStatus err = cEvent.GetParameter<CGContextRef>(kEventParamCGContextRef, &cgContext) ;
                     if ( err != noErr )
@@ -208,7 +207,7 @@ static pascal OSStatus wxMacWindowControlEventHandler( EventHandlerCallRef handl
                                     iter = iter->GetParent() ;
                             }
                         }
-                        CGContextSetAlpha( cgContext , alpha ) ;
+                        CGContextSetAlpha( cgContext, alpha ) ;
 
                         if ( thisWindow->GetBackgroundStyle() == wxBG_STYLE_TRANSPARENT )
                         {
@@ -229,16 +228,20 @@ static pascal OSStatus wxMacWindowControlEventHandler( EventHandlerCallRef handl
                                     ( thisWindow->IsTopLevel() && thisWindow->GetBackgroundStyle() == wxBG_STYLE_SYSTEM ) )
                                 {
                                     if ( thisWindow->GetBackgroundStyle() != wxBG_STYLE_TRANSPARENT )
-                                        CallNextEventHandler( handler ,event ) ;
+                                    {
+                                        CallNextEventHandler( handler,event ) ;
+                                        result = noErr ;
+                                    }
                                 }
                             }
+                            else 
+                            {
+                                result = noErr ;
+                            }
                             thisWindow->MacPaintChildrenBorders();
                         }
                         thisWindow->MacSetCGContextRef( NULL ) ;
                     }
-
-                    if ( created )
-                        CGContextRelease( cgContext ) ;
                 }
 
                 if ( allocatedRgn )
-- 
2.45.2