C#简单获取屏幕鼠标坐标点颜色

api函数:

1    [DllImport("user32.dll")]//取设备场景
2    private static extern IntPtr GetDC(IntPtr hwnd);//返回设备场景句柄
3 
4    [DllImport("gdi32.dll")]//取指定点颜色
5    private static extern int GetPixel(IntPtr hdc, Point p);

 

主要方法:

   Timer tim = new Timer();
   tim.Interval = 1;
   tim.Tick += delegate
   {
       Point p = new Point(MousePosition.X, MousePosition.Y);//取置顶点坐标
       IntPtr hdc = GetDC(new IntPtr(0));//取到设备场景(0就是全屏的设备场景)
       int c = GetPixel(hdc, p);//取指定点颜色
       int r = (c & 0xFF);//转换R
       int g = (c & 0xFF00) / 256;//转换G
       int b = (c & 0xFF0000) / 65536;//转换B
       pictureBox1.BackColor = Color.FromArgb(r, g, b);
   };
   tim.Start();

效果演示:

 

posted @ 2012-11-06 11:39  一抹、思乡泪  Views(4859)  Comments(3Edit  收藏  举报