如何从字体中获得下划线字体的几何形状？ 的CreateFont

Question

I have a library that extracts the text geometry from a truetype font file.

I use a call to CreateFont to get hold of the glyph indices and then I read the bytestream to get the point data.

http://msdn.microsoft.com/en-us/library/windows/desktop/dd183499(v=vs.85).aspx

The issue is that if I pass true in the underline argument, The geometry does not contain the underline. Is there something specific that needs to be done??

The doc reads: fdwUnderline [in] Specifies an underlined font if set to TRUE.

This will help a lot!

Answer 1

Truetype fonts don't have separate underlined variants. For example, when you select underlined Arial, Windows uses regular Arial and draws a line under it. If you read the geometry from a ttf file you get the geometry without an underline, because that's what the file contains.

If you want the "as drawn" geometry, select an outline font and call BeginPath , TextOut , EndPath and GetPath .