private void FinalizePreviewControlMouseUp()
{
_dragDropContainer.Children.Remove(_dragDropPreviewControl);
_dragDropContainer.PreviewMouseMove -= DragDropContainer_PreviewMouseMove;
_dragDropContainer.PreviewMouseUp -= DragDropContainer_PreviewMouseUp;
if (_dragDropPreviewControl != null)
{
_dragDropPreviewControl.ReleaseMouseCapture();
}
_dragDropPreviewControl = null;
Mouse.OverrideCursor = null;
}
public static void SetDragDropPreviewControl(DependencyObject element, DragDropPreviewBase value)
{
element.SetValue(DragDropPreviewControlProperty, value);
}
private void DragSource_PreviewMouseMove(object sender, MouseEventArgs e)
{
if (_mouseCaptured || _dragDropPreviewControlDataContext == null)
{
return;
}
if (DragDrop.IsMovementBigEnough(_initialMousePosition, e.GetPosition(_topWindow)) == false)
{
return;
}
_dragDropPreviewControl = (DragDropPreviewBase) GetDragDropPreviewControl(sender as DependencyObject);
_dragDropPreviewControl.DataContext = _dragDropPreviewControlDataContext;
_dragDropPreviewControl.Opacity = 0.7;
_dragDropContainer.Children.Add(_dragDropPreviewControl);
_mouseCaptured = Mouse.Capture(_dragDropPreviewControl);
Mouse.OverrideCursor = Cursors.Hand;
Canvas.SetLeft(_dragDropPreviewControl, _initialMousePosition.X - 20);
Canvas.SetTop(_dragDropPreviewControl, _initialMousePosition.Y - 15);
_dragDropContainer.PreviewMouseMove += DragDropContainer_PreviewMouseMove;
_dragDropContainer.PreviewMouseUp += DragDropContainer_PreviewMouseUp;
}