如何在运行时裁剪图像 [英] How Do I Crop An Image At Run Time

问题描述

我想在图像上选择一些区域。然后我想将图像上的选择区域（矩形）移动到其他位置。当我完成选择后，我想点击裁剪按钮，我想得到其实际小尺寸的图像部分.....



请帮我解决我的问题...



谢谢

Hi,
I want to select some area on the image. then i want to move that selection area(rectangle) on the image to some other location. when i have done the selection then after that i want to click the crop button and i want to get that portion of image in its actual small size.....

please help me solving my problem...

thanks

推荐答案

很有可能，你需要这个： http://msdn.microsoft.com /en-us/library/system.drawing.bitmap.clone%28v=vs.110%29.aspx [ ^ ]。



使用这种方法很重要，不是说， Canvas.DrawImage 。



如果申请是WPF，这是一个不同的故事。请参阅： http：// msdn .microsoft.com / zh-CN / library / system.windows.media.imaging.croppedbitmap％28v = vs.110％29.aspx [ ^ ]。



另请参阅此CodeProject文章： WPF Interactive Image裁剪控制 [ ^ ]。

-SA

Most likely, you need this: http://msdn.microsoft.com/en-us/library/system.drawing.bitmap.clone%28v=vs.110%29.aspx[^].

It's important to use this method, not, say, Canvas.DrawImage.

If you application is WPF, it's a different story. Please see: http://msdn.microsoft.com/en-us/library/system.windows.media.imaging.croppedbitmap%28v=vs.110%29.aspx[^].

See also this CodeProject article: WPF Interactive Image Cropping Control[^].

—SA

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