protected override void WndProc(ref Message m)
{
base.WndProc(ref m);
const int WM_NCHITTEST = 0x84;
const int HTCLIENT = 1;
const int HTCAPTION = 2;
if ((m.Msg == WM_NCHITTEST) &&
(m.Result.ToInt32() == HTCLIENT))
{
m.Result = (IntPtr)HTCAPTION;
}
}
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