调试易

好像不是   反正有  你自己找找system api

#region Interop
 
    [DllImport("user32.dll")]
    static extern IntPtr SendMessage(IntPtr hWnd, uint msg, IntPtr hdc, PRF_FLAGS drawingOptions);
 
    const uint WM_PRINT = 0x317;
 
    [Flags]
    enum PRF_FLAGS : uint
    {
        CHECKVISIBLE = 0x01,
        CHILDREN = 0x02,
        CLIENT = 0x04,
        ERASEBKGND = 0x08,
        NONCLIENT = 0x10,
        OWNED = 0x20
    }
 
    #endregion
 
    public static Image CaptureImage(this Control control)
    {
        Image img = new Bitmap(control.Width, control.Height);
        using (Graphics g = Graphics.FromImage(img))
        {
            SendMessage(
               control.Handle,
               WM_PRINT,
               g.GetHdc(),
               PRF_FLAGS.CLIENT | PRF_FLAGS.NONCLIENT | PRF_FLAGS.ERASEBKGND);
        }
        return img;
    }
早上刚搜的~~

晕 这个Control是WinForm的Control吧 
我想要截的是 DirectX窗体

我只有截全屏然后拿出来处理的
http://download.csdn.net/detail/jiangfling/5991599