cocoa: setting a scrollview not to draw background, to be darkmode friendly. #34105

git-svn-id: trunk@58971 -

lcl/interfaces/cocoa/cocoawscommon.pas

@@ -168,6 +168,7 @@ begin
   Result.lclSetFrame(r);
   Result.setHidden(AView.isHidden);
   Result.setDocumentView(AView);
+  Result.setDrawsBackground(false); // everything is covered anyway
   if AReleaseView then AView.release;
   AView.setHidden(false);
   SetViewDefaults(Result);