public void Dispose() {
if (_dragPopup != null) {
_dragPopup.Dispose();
_dragPopup = null;
}
if (_mainWindow != null) {
_mainWindow.AllowDrop = true;
_mainWindow = null;
}
}
public DragPreview([NotNull] UIElement item) {
if (item == null) throw new ArgumentNullException(nameof(item));
_dragPopup = new DragPopup(item.RenderSize, new VisualBrush(item));
_dragPopup.UpdatePosition();
_mainWindow = Application.Current.MainWindow;
if (_mainWindow?.AllowDrop == true) {
_mainWindow.AllowDrop = false;
} else {
_mainWindow = null;
}
}
public void Dispose()
{
if (_dragPopup != null)
{
_dragPopup.Dispose();
_dragPopup = null;
}
if (_mainWindow != null)
{
_mainWindow.AllowDrop = true;
_mainWindow = null;
}
}
public DragPreview([NotNull] UIElement item)
{
if (item == null)
{
throw new ArgumentNullException(nameof(item));
}
_dragPopup = new DragPopup(item.RenderSize, new VisualBrush(item));
_dragPopup.UpdatePosition();
_mainWindow = Application.Current?.MainWindow;
if (_mainWindow?.AllowDrop == true)
{
_mainWindow.AllowDrop = false;
}
else
{
_mainWindow = null;
}
}