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

TTF_MeasureUNICODE

Calculate how much of a UCS-2 string will fit in a given width.

Header File

Syntax

int TTF_MeasureUNICODE(TTF_Font *font, const Uint16 *text, int measure_width, int *extent, int *count);

Function Parameters

TTF_Font *	font	the font to query.
const Uint16 *	text	text to calculate, in UCS-2 encoding.
int	measure_width	maximum width, in pixels, available for the string.
int *	extent	on return, filled with latest calculated width.
int *	count	on return, filled with number of characters that can be rendered.

Return Value

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

Remarks

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

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

Please note that this function is named "Unicode" but currently expects UCS-2 encoding (16 bits per codepoint). This does not give you access to large Unicode values, such as emoji glyphs. These codepoints are accessible through the UTF-8 version of this function.

Version

This function is available since SDL_ttf 2.0.18.