ID: Q66925
6.00 6.00a 6.00ax 7.00 | 6.00 6.00a | 1.00
MS-DOS | OS/2 | WINDOWS
The information in this article applies to:
- Microsoft C for MS-DOS, versions 6.0, 6.0a, and 6.0ax
- Microsoft C for OS/2, versions 6.0 and 6.0a
- Microsoft C/C++ for MS-DOS, version 7.0
- Microsoft Visual C++ for Windows, version 1.0
_getfontinfo() is documented as returning a _fontinfo structure containing information including type, facename, filename, ascent, pixheight, pixwidth, and avgwidth about the font currently set. However, _getfontinfo() only reads these values from the .FON file in which they are stored. This can cause problems when using vector fonts that have been scaled by the _setfont() function because the values for ascent, pixheight, and avgwidth will probably be incorrect.
Vector fonts are stored in the .FON file as a series of equations that can be multiplied by some scaling factor to generate fonts of different sizes. By default, the scale factor is 1. When _getfontinfo() is called, it will always return the values for ascent, pixheight, and avgwitch assuming the default scale factor. If the font is scaled to some type size other than the default [using _setfont() with WxHy parameters], the new values for ascent, pixheight, and avgwidth will need to be recalculated. The factor can be determined by dividing the pixheight value returned from _getfontinfo() by the Hy parameter passed to _setfont().
Additional reference words: 6.00 6.00a 6.00ax 7.00 1.00 KBCategory: kbprg kbdocerr KBSubcategory: CRTIss Keywords : kb16bitonly
Last Reviewed: November 12, 1998