(This function is part of SDL_ttf, a separate library from SDL.)

TTF_OpenFontIndexDPIRW

Opens a font from an SDL_RWops with target resolutions (in DPI).

Header File

Syntax

TTF_Font * TTF_OpenFontIndexDPIRW(SDL_RWops *src, int freesrc, int ptsize, long index, unsigned int hdpi, unsigned int vdpi);

Function Parameters

SDL_RWops *	src	an SDL_RWops to provide a font file's data.
int	freesrc	non-zero to close the RWops when the font is closed, zero to leave it open.
int	ptsize	point size to use for the newly-opened font.
long	index	index of the face in the font file.
unsigned int	hdpi	the target horizontal DPI.
unsigned int	vdpi	the target vertical DPI.

Return Value

(TTF_Font *) Returns a valid TTF_Font, or NULL on error.

Remarks

DPI scaling only applies to scalable fonts (e.g. TrueType).

Some .fon fonts will have several sizes embedded in the file, so the point size becomes the index of choosing which size. If the value is too high, the last indexed size will be the default.

If freesrc is non-zero, the RWops will be automatically closed once the font is closed. Otherwise you should close the RWops yourself after closing the font.

Some fonts have multiple "faces" included. The index specifies which face to use from the font file. Font files with only one face should specify zero for the index.

When done with the returned TTF_Font, use TTF_CloseFont() to dispose of it.

Version

This function is available since SDL_ttf 2.0.18.