DOKK / manpages / debian 13 / libsdl3-ttf-doc / TTF_SetTextDirection.3.en
TTF_SetTextDirection(3) SDL_ttf3 FUNCTIONS TTF_SetTextDirection(3)

TTF_SetTextDirection - Set the direction to be used for text shaping a text object.

Defined in SDL3_ttf/SDL_ttf.h

#include "SDL3_ttf/SDL_ttf.h"
bool TTF_SetTextDirection(TTF_Text *text, TTF_Direction direction);

This function only supports left-to-right text shaping if SDL_ttf was not built with HarfBuzz support.

the text to modify.
the new direction for text to flow.

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 text.

This function is available since SDL_ttf 3.0.0.

SDL_ttf 3.2.2 SDL_ttf