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

TTF_OpenFontDPIIO

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

Header File

Syntax

TTF_Font * TTF_OpenFontDPIIO(SDL_IOStream *src, bool closeio, int ptsize, unsigned int hdpi, unsigned int vdpi);

Function Parameters

SDL_IOStream *	src	an SDL_IOStream to provide a font file's data.
bool	closeio	true to close `src` when the font is closed, false to leave it open.
int	ptsize	point size to use for the newly-opened font.
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 closeio is true src will be automatically closed once the font is closed. Otherwise you should close src yourself after closing the font.

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

Version

This function is available since SDL_ttf 3.0.0.