调用系统的Win32API函数
[DllImport("user32.dll")]
private static extern IntPtr SendMessageW(IntPtr hWnd,int Msg,IntPtr wParam,IntPtr lParam);
Process p = Process.GetCurrentProcess();
SendMessageW(p.Handle, 0x319, p.Handle, (IntPtr)0x0a0000);//加2
SendMessageW(p.Handle, 0x319, p.Handle, (IntPtr)0x090000);//减2