学步园

Windows 服务中截图运行到CopyFromScreen函数报错"句柄无效"，在Winform程序中运行正常。 Google、百度了一下，有网友说是此程序不适合做成服务程序，未找到解决办法!

如图所示：

代码如下：
public static Bitmap GetScreen()<br /> {<br /> int w = Screen.PrimaryScreen.Bounds.Width;<br /> int h = Screen.PrimaryScreen.Bounds.Height;</p> <p> Bitmap bitmap = new Bitmap(w, h);<br /> Graphics g = Graphics.FromImage(bitmap);<br /> try<br /> {<br /> //从指定的区域中复制图形，抓取屏幕中的图形区域<br /> g.CopyFromScreen(Point.Empty, Point.Empty, new Size(w, h));<br /> }<br /> catch (Exception err)<br /> {<br /> monitor.monitoring.ExecptionInfo(err.Message, err.Source, "monitor.ScreenShot"+monitor.monitoring.GetNetCardMacAddress(), "CutImage");<br /> }<br /> return bitmap;<br /> }