LCL-CustomDrawn: Dont consider invisible controls to disable drawing covered controls

git-svn-id: trunk@36704 -

lcl/interfaces/customdrawn/customdrawnproc.pas

@@ -1059,6 +1059,9 @@ begin
     if not (lChild is TWinControl) then Continue;
     lWinChild := TWinControl(lChild);
 
+    // Ignore invisible controls
+    if not lWinChild.Visible then Continue;
+
     // ToDo: Ignore alpha blended controls
 
     // Basic case: alClient