c#中怎樣取得某坐標點的顏色

// x,y 分別為x軸，y軸坐標 返回System.Drawing.Color 可以直接顯示 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; } //定義一個定時器 獲取當前坐標上的像素點顏色 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(); }