CODEWITHSUNDEEP
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Cygon
Cygon

Reputation: 9610

How can I obtain the Line Height of a GDI HFONT?

I'm adding SVG export support to an old application built with MFC and using plain old GDI. As SVG 1.1 doesn't support text wrapping, I am forced to do this manually.

The application provides me with a CFont instance (which contains an HFONT). I can calculate the width of a piece of text using CFont::GetTextExtentPoint(), but I haven't found out how to obtain the line height of a font yet.

How can I obtain the line height of my font? Or does CFont::GetTextExtentPoint() always return the line height in the Y coordinate (instead the actual height of the text's tight-fitting bounding box)?

Upvotes: 0

Views: 2108

Answers (2)

djeidot
djeidot

Reputation: 4642

See the answer I gave in this question. The question's about the text width, but you can get the text height as well.

Upvotes: 0

Cygon
Cygon

Reputation: 9610

I think I have a possible answer:

CDC desktopDC;
desktopDC.Attach(::GetDC(0));
desktopDC.SelecTObject(&font);

::TEXTMETRIC metrics;
desktopDC.GetTextMetrics(&metrics);

int lineHeight = metrics.tmHeight + metrics.tmExternalLeading;

It's a bit cumbersome, so if there's a shorter, more obvious solution (or if anyone can confirm that CFont::GetTextExtentPoint() provides me with the actual line height), I'd be happy to hear it still ;)

Upvotes: 3

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