当我将增强型元文件（通过C#中的GDI+构建）转换为老式的Windows元文件时，结果非常粗糙，显然是因为坐标被四舍五入到了最近的屏幕像素。如果我通过
GetWinMetaFileBits（emph、bits_l、bits、MM_ANISOTROPIC、GetDC（0））；
或使用GDI+的Metafile:：EmfToWmfBits。罪魁祸首可能是正在使用的屏幕DC这篇文章建议使用打印机DC，这对我来说很有效，但如果用户没有安装打印机，显然就不起作用。有更好的方法吗？我曾考虑过为此创建一个高分辨率的内存DC，但我找不到合适的文档，我还担心使用的RAM。
通常的方法是创建一个分辨率高得多的内存DC，渲染到该DC，然后根据需要保存。请注意，字体大小可能会因此而变得一团糟。
HDC memDC = CreateCompatibleDC ( hDC );
HBITMAP memBM = CreateCompatibleBitmap ( hDC, nWidth, nHeight );
SelectObject ( memDC, memBM );
With nWidth , nHeight much larger.
The CreateCompatible bit should set all the dpi etc, but I have had problems where the fonts were drawn fixed pixel size rather than rescaled - so they ended up being only 10pixels high on a 10,000 pixel image
向谷歌索取ENMETA.EXE
Microsoft说明
下载中包含示例。
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