GDI + / C＃：如何保存图像作为EMF？ [英] GDI+ / C#: How to save an image as EMF?

问题描述

如果您使用Image.Save方法将图像保存到一个EMF / WMF，你有一个exceptoin（<一个href=\"http://msdn.microsoft.com/en-us/library/ktx83wah.aspx\">http://msdn.microsoft.com/en-us/library/ktx83wah.aspx)

If you use Image.Save Method to save an image to a EMF/WMF, you got an exceptoin (http://msdn.microsoft.com/en-us/library/ktx83wah.aspx)

有另一种方式将图像保存到一个EMF / WMF？
是否有任何连接codeRS可用？

Is there another way to save the image to an EMF/WMF? Are there any encoders available?

谢谢
埃里克

推荐答案

图片是一个抽象类：你想要做什么取决于你是否正在处理一个图元文件或位图。

Image is an abstract class: what you want to do depends on whether you are dealing with a Metafile or a Bitmap.

创建与GDI +图像并保存为一个EMF与图元文件简单。每迈克的<一个href=\"http://stackoverflow.com/questions/152729/gdi-c-how-to-save-an-image-as-emf/152830#152830\">post:

Creating an image with GDI+ and saving it as an EMF is simple with Metafile. Per Mike's post:

var path = @"c:\foo.emf"
var g = CreateGraphics(); // get a graphics object from your form, or wherever
var img = new Metafile(path, g.GetHdc()); // file is created here
var ig = Graphics.FromImage(img);
// call drawing methods on ig, causing writes to the file
ig.Dispose(); img.Dispose(); g.ReleaseHdc(); g.Dispose();

这是你想要做的大部分时间，因为这是EMF是什么：保存矢量图像，GDI +绘图命令的形式

This is what you want to do most of the time, since that is what EMF is for: saving vector images in the form of GDI+ drawing commands.

您可以节省位图通过使用上述方法，并呼吁EMF文件 ig.DrawImage（your_bitmap），但要注意，这并不神奇隐蔽栅格数据到矢量图像。

You can save a Bitmap to an EMF file by using the above method and calling ig.DrawImage(your_bitmap), but be aware that this does not magically covert your raster data into a vector image.

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