[fix #18418] do not pursue when wheel event when delta = 0

qgis · Oct 15, 2018 · 6396571 · 6396571
1 parent 32d4bcc
commit 6396571
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/src/gui/qgsmapcanvas.cpp b/src/gui/qgsmapcanvas.cpp
@@ -1543,6 +1543,12 @@ void QgsMapCanvas::wheelEvent( QWheelEvent *e )
       return;
   }
 
+  if ( e->delta() == 0 )
+  {
+    e->accept();
+    return;
+  }
+
   double zoomFactor = mWheelZoomFactor;
 
   // "Normal" mouse have an angle delta of 120, precision mouses provide data faster, in smaller steps