TTF_SetFontOutline - Set a font's current outline.

       This function is available since SDL_ttf 3.0.0.

       This uses the font properties

       TTF_PROP_FONT_OUTLINE_LINE_CAP_NUMBER ,

       TTF_PROP_FONT_OUTLINE_LINE_JOIN_NUMBER , and

       TTF_PROP_FONT_OUTLINE_MITER_LIMIT_NUMBER when setting the font outline.

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

font   the font to set a new outline on.

       outline
              positive outline value, 0 to default.

       Defined in SDL3_ttf/SDL_ttf.h

       TTF_SetFontOutline - Set a font's current outline.

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

•(3), TTF_GetFontOutline(3)

SDL_ttf                                           SDL_ttf 3.2.2                            TTF_SetFontOutline(3)

#include"SDL3_ttf/SDL_ttf.h"boolTTF_SetFontOutline(TTF_Font*font,intoutline);

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