C＃打印屏幕预定义区域

我想仅捕获应用程序的预定义区域，例如我想仅打印屏幕组框。我将this.bounds更改为groupbox.bounds，但它不起作用。它捕获其他区域，但不包含组框。有任何想法吗？的代码是：C＃打印屏幕预定义区域

// Set the bitmap object to the size of the screen 
    bmpScreenshot = new Bitmap(this.Bounds.Width, this.Bounds.Height, PixelFormat.Format32bppArgb); 
    // Create a graphics object from the bitmap 
    gfxScreenshot = Graphics.FromImage(bmpScreenshot); 
    // Take the screenshot from the upper left corner to the right bottom corner 
    gfxScreenshot.CopyFromScreen(this.Bounds.X, this.Bounds.Y, 0, 0, this.Bounds.Size, CopyPixelOperation.SourceCopy); 

SaveFileDialog saveImageDialog = new SaveFileDialog(); 
saveImageDialog.Title = "Select output file:"; 
saveImageDialog.Filter = "JPeg Image|*.jpg|Bitmap Image|*.bmp|Gif Image|*.gif"; 
//saveImageDialog.FileName = printFileName; 
if (saveImageDialog.ShowDialog() == DialogResult.OK) 
{enter code here 
    // Save the screenshot to the specified path that the user has chosen 
    bmpScreenshot.Save(saveImageDialog.FileName, ImageFormat.Png); 
}

感谢。

来源

2011-03-19 cnewbie

出了什么问题'DrawToBitmap'？这和[你最后一个问题]有什么不同（http://stackoverflow.com/questions/5336553/c-print-screen-active-window）？ – 2011-03-19 11:10:45

@Code Grey：请在这个问题上看到我对答案的评论。 – 2011-03-19 11:37:50

问题是Bounds属性中的坐标是相对于其父项，但CopyFromScreen需要绝对坐标。

尝试使用PointToScreen方法：

Point p = this.PointToScreen(new Point(groupBox.Bounds.X, groupBox.Bounds.Y)); 
gfxScreenshot.CopyFromScreen(p.X, p.Y, 0, 0, 
       groupBox.Bounds.Size, CopyPixelOperation.SourceCopy);

来源

2011-03-19 11:40:47

谢谢！但是，第一行必须更改为： Point p = this.PointToScreen（new Point（groupBox2.Bounds.X，groupBox2.Bounds.Y））; 为了正常工作。无论如何非常感谢你！ – cnewbie 2011-03-19 13:47:02

@cnewbie：你说得对，我修好了 – 2011-03-19 14:16:08

C＃打印屏幕预定义区域

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