private void CancelDragMode()
{
this.StopSnappingEngine();
Mouse.OverrideCursor = (Cursor)null;
this.drag.Dispose();
this.drag = (AnnotationVisual.DragData)null;
this.ReleaseMouseCapture();
}
private void OnDragBegin()
{
this.CaptureMouse();
this.drag = new AnnotationVisual.DragData()
{
Engaged = false,
InitialCursorPos = Mouse.GetPosition((IInputElement)null),
OriginalAnnotationPos = this.Annotation.Position
};
}