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

TTF_SetFontSize

Set a font's size dynamically.

Header File

Defined in <SDL3_ttf/SDL_ttf.h>

Syntax

bool TTF_SetFontSize(TTF_Font *font, float ptsize);

Function Parameters

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

Return Value

(bool) Returns true on success or false on failure; call SDL_GetError() for more information.

Remarks

This updates any TTF_Text objects using this font, and clears already-generated glyphs, if any, from the cache.

Thread Safety

This function should be called on the thread that created the font.

Version

This function is available since SDL_ttf 3.0.0.

See Also

• TTF_GetFontSize

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CategoryAPI, CategoryAPIFunction

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