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


Set a font's size dynamically.

Header File

Defined in <SDL3_ttf/SDL_ttf.h>


int TTF_SetFontSize(TTF_Font *font, int ptsize);

Function Parameters

TTF_Font * font the font to resize.
int ptsize the new point size.

Return Value

(int) Returns 0 if successful, -1 on error.


This clears already-generated glyphs, if any, from the cache.


This function is available since SDL_ttf 3.0.0.

CategoryAPI, CategoryAPIFunction

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