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

TTF_SetFontSizeDPI

Set font size dynamically with target resolutions, in dots per inch.

Header File

Defined in <SDL3_ttf/SDL_ttf.h>

Syntax

bool TTF_SetFontSizeDPI(TTF_Font *font, float ptsize, int hdpi, int vdpi);

Function Parameters

TTF_Font *	font	the font to resize.
float	ptsize	the new point size.
int	hdpi	the target horizontal DPI.
int	vdpi	the target vertical DPI.

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
• TTF_GetFontSizeDPI

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CategoryAPI, CategoryAPIFunction

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