/// <summary>
/// Starts dragging, and invokes the StartResizing event.
/// </summary>
/// <param name="args">Mouse event arguments.</param>
protected override void OnMouseDown(MouseEventArgs args)
{
if (args.Button == MouseButtons.Left)
{
this.dragging = true;
this.lastLocation = args.Position;
if (StartResizing != null)
{
StartResizing.Invoke(this);
}
}
}
protected virtual void OnStartResizing(IntPtr handle)
{
System.Diagnostics.Debug.WriteLine($"Start resizing");
_state = State.Resizing;
StartResizing?.Invoke(this, handle);
}