Don't return true from DoTryChain() if the event wasn't really processed.

Correct the return value when an event handler didn't honour "process only in
this handler" flag: we shouldn't pass the event to the further handlers in
this case but we shouldn't return true neither as the event wasn't really
processed.

This corrects background painting of wxHtmlWindow broken by previous changes.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@64495 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/common/event.cpp

@@ -1447,8 +1447,11 @@ bool wxEvtHandler::DoTryChain(wxEvent& event)
         // for it by not processing the event further because this was already
         // done by that rogue event handler.
         wxEventProcessInHandlerOnly processInHandlerOnly(event, h);
-        if ( h->ProcessEvent(event) || !event.ShouldProcessOnlyIn(h) )
+        if ( h->ProcessEvent(event) )
             return true;
+
+        if ( !event.ShouldProcessOnlyIn(h) )
+            break;
     }
 
     return false;