复制代码 代码如下:

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const int HTLEFT = 10;

const int HTRIGHT = 11;

const int HTTOP = 12;

const int HTTOPLEFT = 13;

const int HTTOPRIGHT = 14;

const int HTBOTTOM = 15;

const int HTBOTTOMLEFT = 0x10;

const int HTBOTTOMRIGHT = 17;

protected override void WndProc(ref Message m)

{

switch (m.Msg)

{

case 0x0084:

base.WndProc(ref m);

Point vPoint = new Point((int)m.LParam & 0xFFFF,

(int)m.LParam >> 16 & 0xFFFF);

vPoint = PointToClient(vPoint);

if (vPoint.X <= 5)

if (vPoint.Y <= 5)

m.Result = (IntPtr)HTTOPLEFT;

else if (vPoint.Y >= ClientSize.Height - 5)

m.Result = (IntPtr)HTBOTTOMLEFT;

else m.Result = (IntPtr)HTLEFT;

else if (vPoint.X >= ClientSize.Width - 5)

if (vPoint.Y <= 5)

m.Result = (IntPtr)HTTOPRIGHT;

else if (vPoint.Y >= ClientSize.Height - 5)

m.Result = (IntPtr)HTBOTTOMRIGHT;

else m.Result = (IntPtr)HTRIGHT;

else if (vPoint.Y <= 5)

m.Result = (IntPtr)HTTOP;

else if (vPoint.Y >= ClientSize.Height - 5)

m.Result = (IntPtr)HTBOTTOM;

break;

case 0x0201://鼠标左键按下的消息

m.Msg = 0x00A1;//更改消息为非客户区按下鼠标

m.LParam = IntPtr.Zero;//默认值

m.WParam = new IntPtr(2);//鼠标放在标题栏内

base.WndProc(ref m);

break;

default:

base.WndProc(ref m);

break;

}

}