From 6bab45e2238c0e2acfa6c8f3776c2ee29d1df0e7 Mon Sep 17 00:00:00 2001
From: sekelsenmat <sekelsenmat@lazarus-ide.org>
Date: Fri, 6 Apr 2012 12:27:40 +0000
Subject: [PATCH] LazRegions: Minor fixes and commenting

git-svn-id: trunk@36606 -
---
 lcl/interfaces/customdrawn/customdrawnwinapi.inc | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lcl/interfaces/customdrawn/customdrawnwinapi.inc b/lcl/interfaces/customdrawn/customdrawnwinapi.inc
index 7d0cc7418d..f955d9f429 100644
--- a/lcl/interfaces/customdrawn/customdrawnwinapi.inc
+++ b/lcl/interfaces/customdrawn/customdrawnwinapi.inc
@@ -238,11 +238,16 @@ begin
 
   if (fnCombineMode<>RGN_COPY) and not IsValidGDIObject(Src2) then Exit;
 
+  // If the operation is a copy, execute it now, as it will not involve Src2
+  // The common code would not work in this case
   if fnCombineMode = RGN_COPY then
   begin
     if Dest <> Src1 then DestRgn.Assign(Src1Rgn);
+    Result := DestRgn.GetRegionKind();
+    Exit;
   end;
 
+  // Now operations which involve Src2, consider both cases: Dest=Src1 and Dest<>Src1
   if Dest = Src1 then
     DestRgn.CombineWith(Src2Rgn, fnCombineMode)
   else