public void HandleDragOver(object sender, DragEventArgs e, BaseTreeViewItem treeViewItem)
{
Assert.ArgumentNotNull(sender, nameof(sender));
Assert.ArgumentNotNull(e, nameof(e));
Assert.ArgumentNotNull(treeViewItem, nameof(treeViewItem));
adorner.AllowedPositions = ControlDragAdornerPosition.None;
if (e.Data.GetDataPresent(LayoutDesigner.DragIdentifier))
{
adorner.AllowedPositions = ControlDragAdornerPosition.Top | ControlDragAdornerPosition.Bottom;
var h = adorner.GetHitTest(e);
e.Effects = (h & adorner.AllowedPositions) != ControlDragAdornerPosition.None ? DragDropEffects.Move : DragDropEffects.None;
/*
* if (e.Effects == DragDropEffects.Move && (Keyboard.IsKeyDown(Key.LeftCtrl) || Keyboard.IsKeyDown(Key.RightCtrl)))
* {
* e.Effects = DragDropEffects.Copy;
* }
*/
}
else if (e.Data.GetDataPresent(DragManager.DragIdentifier))
{
adorner.AllowedPositions = ControlDragAdornerPosition.Top | ControlDragAdornerPosition.Bottom;
var h = adorner.GetHitTest(e);
e.Effects = (h & adorner.AllowedPositions) != ControlDragAdornerPosition.None ? DragDropEffects.Copy : DragDropEffects.None;
}
else if (e.Data.GetDataPresent(BindingAnchor.BindingAnchorDragIdentifier))
{
var anchor = (BindingAnchor)e.Data.GetData(BindingAnchor.BindingAnchorDragIdentifier);
anchor.HandleDragOver(this, e);
}
}
public void HandleDragOver(object sender, DragEventArgs e, BaseTreeViewItem treeViewItem)
{
Assert.ArgumentNotNull(sender, nameof(sender));
Assert.ArgumentNotNull(e, nameof(e));
Assert.ArgumentNotNull(treeViewItem, nameof(treeViewItem));
adorner.AllowedPositions = ControlDragAdornerPosition.None;
if (e.Data.GetDataPresent(DragIdentifier))
{
e.Effects = DragDropEffects.Move;
adorner.AllowedPositions = ControlDragAdornerPosition.Top | ControlDragAdornerPosition.Bottom;
}
if (!e.Data.GetDataPresent(DragManager.DragIdentifier))
{
return;
}
adorner.AllowedPositions = ControlDragAdornerPosition.Top | ControlDragAdornerPosition.Bottom;
var h = adorner.GetHitTest(e);
e.Effects = (h & adorner.AllowedPositions) != ControlDragAdornerPosition.None ? DragDropEffects.Move : DragDropEffects.None;
}