Just upgraded to 2018.1.3 and was clicking around. I'm using the PropertyGrid (VerticalGrid) and can consistently reproduce the following when using the scroll wheel inside a property.
An unhandled exception of type 'System.NullReferenceException' occurred in DevExpress.XtraVerticalGrid.v18.1.dll
at Void MouseWheel(DevExpress.Utils.MouseWheelScrollClientArgs) in DevExpress.XtraVerticalGrid.PGEditingState (DevExpress.XtraVerticalGrid.v18.1.dll)
at Void OnScrollLine(DevExpress.Utils.DXMouseEventArgs, Int32, Boolean) in DevExpress.Utils.MouseWheelScrollHelper (DevExpress.Utils.v18.1.dll)
at Void OnMouseWheel(System.Windows.Forms.MouseEventArgs) in DevExpress.Utils.MouseWheelScrollHelper (DevExpress.Utils.v18.1.dll)
at Void WmMouseWheel(System.Windows.Forms.Message ByRef) in System.Windows.Forms.Control (System.Windows.Forms.dll)
at Void WndProc(System.Windows.Forms.Message ByRef) in System.Windows.Forms.Control (System.Windows.Forms.dll)
at Void WndProc(System.Windows.Forms.Message ByRef) in DevExpress.XtraEditors.Container.EditorContainer (DevExpress.XtraEditors.v18.1.dll)
at Void WndProc(System.Windows.Forms.Message ByRef) in DevExpress.XtraVerticalGrid.VGridControlBase (DevExpress.XtraVerticalGrid.v18.1.dll)
at IntPtr Callback(IntPtr, Int32, IntPtr, IntPtr) in System.Windows.Forms.NativeWindow (System.Windows.Forms.dll)
Hi,
We have successfully reproduced the behavior you described and passed this ticket to our developers' team for further research. Please bear with us. We will notify you as soon as we make any progress.
Of course! Thanks for responding so quickly!