remove Windows OS specific event filter that eats context menu events

fixes #17453

src/gui/qgsmaptoolcapture.cpp

@@ -41,9 +41,6 @@
 QgsMapToolCapture::QgsMapToolCapture( QgsMapCanvas *canvas, QgsAdvancedDigitizingDockWidget *cadDockWidget, CaptureMode mode )
   : QgsMapToolAdvancedDigitizing( canvas, cadDockWidget )
   , mCaptureMode( mode )
-#ifdef Q_OS_WIN
-  , mSkipNextContextMenuEvent( 0 )
-#endif
 {
   mCaptureModeFromLayer = mode == CaptureNone;
   mCapturing = false;
@@ -640,18 +637,6 @@ void QgsMapToolCapture::stopCapturing()
 
   mTracingStartPoint = QgsPointXY();
 
-#ifdef Q_OS_WIN
-  Q_FOREACH ( QWidget *w, qApp->topLevelWidgets() )
-  {
-    if ( w->objectName() == "QgisApp" )
-    {
-      if ( mSkipNextContextMenuEvent++ == 0 )
-        w->installEventFilter( this );
-      break;
-    }
-  }
-#endif
-
   mCapturing = false;
   mCaptureCurve.clear();
   mSnappingMatches.clear();
@@ -783,15 +768,3 @@ void QgsMapToolCapture::setPoints( const QVector<QgsPointXY> &pointList )
     mSnappingMatches.append( QgsPointLocator::Match() );
 }
 
-#ifdef Q_OS_WIN
-bool QgsMapToolCapture::eventFilter( QObject *obj, QEvent *event )
-{
-  if ( event->type() != QEvent::ContextMenu )
-    return false;
-
-  if ( --mSkipNextContextMenuEvent == 0 )
-    obj->removeEventFilter( this );
-
-  return mSkipNextContextMenuEvent >= 0;
-}
-#endif

src/gui/qgsmaptoolcapture.h

@@ -97,10 +97,6 @@ class GUI_EXPORT QgsMapToolCapture : public QgsMapToolAdvancedDigitizing
      */
     void keyPressEvent( QKeyEvent *e ) override;
 
-#ifdef Q_OS_WIN
-    virtual bool eventFilter( QObject *obj, QEvent *e ) override;
-#endif
-
     /**
      * Clean a temporary rubberband
      */
@@ -261,9 +257,6 @@ class GUI_EXPORT QgsMapToolCapture : public QgsMapToolAdvancedDigitizing
 
     friend class TestQgsMapToolReshape;
 
-#ifdef Q_OS_WIN
-    int mSkipNextContextMenuEvent;
-#endif
 };
 
 #endif