Way to make a Windowless WPF window draggable without getting InvalidOperationException

Question

I have a borderless WPF main window. I\'m trying to make it so that the end user can drag the window.

I\'ve added the following to the Window\'s constructor:

<

Answer 1

you can override the original method:

 public new void DragMove()
     {
        if (this.WindowState == WindowState.Normal)
        {
            SendMessage(hs.Handle, WM_SYSCOMMAND, (IntPtr)0xf012, IntPtr.Zero);
            SendMessage(hs.Handle, WM_LBUTTONUP, IntPtr.Zero, IntPtr.Zero);
        }
    }