c#中怎样取得某坐标点的颜色

// x,y 分别为x轴，y轴坐标 返回System.Drawing.Color 可以直接显示 public System.Drawing.Color GetPixelColor(int x, int y) { IntPtr hdc = GetDC(IntPtr.Zero); uint pixel = GetPixel(hdc, x, y); ReleaseDC(IntPtr.Zero, hdc); Color color = Color.FromArgb((int)(pixel & 0x000000FF), (int)(pixel & 0x0000FF00) >> 8, (int)(pixel & 0x00FF0000) >> 16); return color; } //定义一个定时器 获取当前坐标上的像素点颜色 private void timer_Tick(object sender, EventArgs e) { textBox1.Text = GetPixelColor(Cursor.Position.X, Cursor.Position.Y).R.ToString() + " " + GetPixelColor(Cursor.Position.X, Cursor.Position.Y).G.ToString() + " " + GetPixelColor(Cursor.Position.X, Cursor.Position.Y).B.ToString(); }