void DesignerPanel_MouseMove(object sender, System.Windows.Forms.MouseEventArgs e)
{
IUISelectionService selectionServ = this.DesignedControl.Site.GetService(typeof(IUISelectionService)) as IUISelectionService;
if (selectionServ == null)
{
return;
}
selectionServ.SetCursor(e.X, e.Y);
if (_mouseDown)
{
if (_firstMove)
{
selectionServ.MouseDragBegin(this.DesignerPanel, e.X, e.Y);
_firstMove = false;
}
else
{
selectionServ.MouseDragMove(e.X, e.Y);
}
}
else if (selectionServ.SelectionInProgress)
{
selectionServ.MouseDragMove(e.X, e.Y);
}
}
protected override void OnMouseDragBegin(int x, int y)
{
// do not call base here because the behaviour is specific for the ControlDesgner (does IUISelectionService.DragBegin)
//
IUISelectionService selectionServ = this.GetService(typeof(IUISelectionService)) as IUISelectionService;
if (selectionServ != null)
{
// once ControlDesigner.MouseDragBegin is fired this will start getting dragover events.
//
Point location = new Point(x, y);
IDesignerHost host = GetService(typeof(IDesignerHost)) as IDesignerHost;
if (base.MouseButtonDown == MouseButtons.Middle && host != null && host.RootComponent != this.Control)
{
location = this.Control.Parent.PointToClient(this.Control.PointToScreen(new Point(x, y)));
// I have to do this, because I get DragOver events fired for the control I am actually dragging
//
this.Control.AllowDrop = false;
selectionServ.DragBegin();
}
else
{
selectionServ.MouseDragBegin(this.Control, location.X, location.Y);
}
}
}