Qt Designer: Return true for handled by QTabWidgetEventFilter::eventFilter().

The function returned false for the events it handles and so the
drop event occurring when dropping a tab propapated to QTabBar::event()
where it triggered processing and setting it "ignored". Prevent that
by returning true from the event filter.

Task-number: QTBUG-48099
Change-Id: I0276894399c9f1aab17cb302da6fef7f3f401834
Reviewed-by: Ivan Komissarov <ABBAPOH@gmail.com>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@theqtcompany.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/src/designer/src/lib/shared/qdesigner_tabwidget.cpp b/src/designer/src/lib/shared/qdesigner_tabwidget.cpp
index 16866380f..b314dddc1 100644
--- a/src/designer/src/lib/shared/qdesigner_tabwidget.cpp
+++ b/src/designer/src/lib/shared/qdesigner_tabwidget.cpp
@@ -168,6 +168,7 @@ bool QTabWidgetEventFilter::eventFilter(QObject *o, QEvent *e)
     if (!fw)
         return false;
 
+    bool handled = true;
     switch (type) {
     case QEvent::MouseButtonDblClick:
         break;
@@ -294,10 +295,11 @@ bool QTabWidgetEventFilter::eventFilter(QObject *o, QEvent *e)
     } break;
 
     default:
+        handled = false;
         break;
     }
 
-    return false;
+    return handled;
 }
 
 void QTabWidgetEventFilter::removeCurrentPage()