private void OnDragQuery(object sender, DragDropQueryEventArgs e)
{
if (e.Options.Status == DragStatus.DragQuery)
{
e.QueryResult = true;
e.Handled = true;
var sourceControl = e.Options.Source;
var dragCue = RadDragAndDropManager.GenerateVisualCue(sourceControl);
dragCue.HorizontalAlignment = HorizontalAlignment.Left;
dragCue.Content = sourceControl.DataContext;
dragCue.ContentTemplate = App.Current.Resources["TrackDragCueTemplate"] as DataTemplate;
dragCue.HorizontalContentAlignment = System.Windows.HorizontalAlignment.Stretch;
e.Options.DragCue = dragCue;
e.Options.Payload = new DragDropOperation()
{
Payload = sourceControl.DataContext
};
}
if (e.Options.Status == DragStatus.DropSourceQuery)
{
e.QueryResult = true;
e.Handled = true;
}
}
/// <summary>
/// Called when [drag info].
/// </summary>
/// <param name="sender">The sender.</param>
/// <param name="e">The <see cref="Telerik.Windows.Controls.DragDrop.DragDropEventArgs"/> instance containing the event data.</param>
protected virtual void OnDragInfo(object sender, DragDropEventArgs e)
{
e.Handled = true;
if (e.Options.Status == DragStatus.DragInProgress)
{
var cue = RadDragAndDropManager.GenerateVisualCue();
cue.Content = e.Options.Payload;
if (DragContentTemplate != null)
{
cue.ContentTemplate = DragContentTemplate;
}
e.Options.DragCue = cue;
}
}