C#外挂专用截取显示器图像代码

private void ss()
        ...{
            //this.Hide();
            IntPtr dc1=CreateDC("DISPLAY",null,null,(IntPtr) null)   ;   
            //创建显示器的DC   
            Graphics g1=Graphics.FromHdc(dc1)   ;   
            //由一个指定设备的句柄创建一个新的Graphics对象   
            Bitmap MyImage=new Bitmap(Screen.PrimaryScreen.Bounds.Width,Screen.PrimaryScreen.Bounds.Height,g1); 
            //根据屏幕大小创建一个与之相同大小的Bitmap对象   
            Graphics   g2   =   Graphics.FromImage   (   MyImage   )   ;   
            //获得屏幕的句柄   
            IntPtr dc3 =g1.GetHdc();   
            //获得位图的句柄   
            IntPtr dc2 =g2.GetHdc();   
            //把当前屏幕捕获到位图对象中   
            BitBlt(dc2,0,0,Screen.PrimaryScreen.Bounds.Width ,Screen.PrimaryScreen.Bounds.Height,dc3,0,0,13369376);
            //把当前屏幕拷贝到图中   
            g1.ReleaseHdc(dc3);   
            //释放屏幕句柄   
            g2.ReleaseHdc(dc2);
            textBox3.Text=MyImage.GetPixel(Convert.ToInt16(textBox1.Text),Convert.ToInt16(textBox2.Text)).Name.ToString();
            

            //textBox3.Text=MyImage.GetPixel(812,16).Name.ToString();
            //this.Show();
        }