Man page - ttf_measurestring(3)

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Package: libsdl3-ttf-doc
apt-get install libsdl3-ttf-doc

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TTF_MeasureString - Calculate how much of a UTF-8 string will fit in a given width.

Defined in SDL3_ttf/SDL_ttf.h

#include "SDL3_ttf/SDL_ttf.h"

bool TTF_MeasureString(TTF_Font *font, const char *text, size_t length, int max_width, int *measured_width, size_t *measured_length);

This reports the number of characters that can be rendered before reaching max_width .

This does not need to render the string to do this calculation.

	font		the font to query.
	text		text to calculate, in UTF-8 encoding.
	length		the length of the text, in bytes, or 0 for null terminated text.

max_width

maximum width, in pixels, available for the string, or 0 for unbounded width.

measured_width

a pointer filled in with the width, in pixels, of the string that will fit, may be NULL.

measured_length

a pointer filled in with the length, in bytes, of the string that will fit, may be NULL.

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

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

This function is available since SDL_ttf 3.0.0.