1 files changed, 6 insertions, 2 deletions
diff --git a/src/gui/kernel/qevent.h b/src/gui/kernel/qevent.h
index d95da40368..2a47afaa0b 100644
--- a/src/gui/kernel/qevent.h
+++ b/src/gui/kernel/qevent.h
@@ -193,6 +193,10 @@ public:
     QWheelEvent(const QPointF &pos, const QPointF &globalPos, QPoint pixelDelta, QPoint angleDelta,
                 int qt4Delta, Qt::Orientation qt4Orientation, Qt::MouseButtons buttons,
                 Qt::KeyboardModifiers modifiers, Qt::ScrollPhase phase, Qt::MouseEventSource source, bool inverted);
+
+    QWheelEvent(QPointF pos, QPointF globalPos, QPoint pixelDelta, QPoint angleDelta,
+                Qt::MouseButtons buttons, Qt::KeyboardModifiers modifiers, Qt::ScrollPhase phase,
+                bool inverted, Qt::MouseEventSource source = Qt::MouseEventNotSynthesized);
     ~QWheelEvent();
 
 
@@ -225,8 +229,8 @@ protected:
     QPointF g;
     QPoint pixelD;
     QPoint angleD;
-    int qt4D;
-    Qt::Orientation qt4O;
+    int qt4D = 0;
+    Qt::Orientation qt4O = Qt::Vertical;
     Qt::MouseButtons mouseState;
     uint ph : 2;
     uint src: 2;