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Dragging a Borderless Form

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12 Jun 2010CPOL 31.7K   7   9
A code snippet which makes a borderless form draggable.
I was looking through some old C# projects on my external hard drive, when I stumbled upon the following code snippet, which makes a borderless form draggable.

C#
protected override void WndProc(ref Message m)
{
    if (m.Msg == 163 && this.ClientRectangle.Contains(this.PointToClient(new Point(m.LParam.ToInt32()))) && m.WParam.ToInt32() == 2)
        m.WParam = (IntPtr)1;
    base.WndProc(ref m);
    if (m.Msg == 132 && m.Result.ToInt32() == 1)
        m.Result = (IntPtr)2;
}


This makes the form draggable by clicking and dragging anywhere on the form itself (that is, not on controls unless they are disabled).

License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


Written By
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Denmark Denmark

New biography coming sometime.
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