Treeview Drag User Cancel (No event found)

[NorthGates]

I am trying to implement my own Drag hint line. All is well but if the user cancel the drag operation I cannot hide my hint line because I cannot find the event where I can tell the user canceled the drag.

I tried a few thing with no luck. Example, the user starts to drag a node then stays on that node and release the mouse.
MouseUp, NodeMouseUp don't fire. Same thing when the user starts the drag operation but hits Escape key.

Anybody has a trick?

[NorthGates]

Found it!... Work around is:

private void tv_NodeMouseMove(object sender, RadTreeViewMouseEventArgs e)
{
    if (Control.MouseButtons == System.Windows.Forms.MouseButtons.None && dragLine.Visible)
        dragLine.Visible = false;
}