程式語言 - Simple DirectMedia Layer (SDL) - v1.2 - C/C++ - Open Font

參考資訊：
https://www.libsdl.org/release/SDL-1.2.15/docs/html/index.html

main.c

#include <stdio.h>
#include <stdlib.h>
#include <SDL.h>
#include <SDL_ttf.h>
 
int main(int argc, char **args)
{
    char buf[255] = {0};
    SDL_Surface *screen = NULL;

    SDL_Init(SDL_INIT_VIDEO);
    screen = SDL_SetVideoMode(320, 240, 16, SDL_HWSURFACE);
    TTF_Init();
    TTF_Font *font = TTF_OpenFont("font.ttf", 30);
    SDL_FillRect(screen, &screen->clip_rect, SDL_MapRGB(screen->format, 0x00, 0x00, 0x00));

    int w = 0;
    int h = 0;
    SDL_Color col = {0, 255, 0};
    SDL_Rect rt = {0, 100, 0, 0};
    const char *cc = "司徒的教學網站";

    TTF_SizeUTF8(font, cc, &w, &h);
    rt.x = (320 - w) / 2;
    SDL_Surface *msg = TTF_RenderUTF8_Solid(font, cc, col);
    SDL_BlitSurface(msg, NULL, screen, &rt);
    SDL_Flip(screen);
    SDL_FreeSurface(msg);
    SDL_Delay(3000);

    TTF_CloseFont(font);
    TTF_Quit();
    SDL_Quit();
    return 0;
}

編譯、執行

$ gcc main.c -o main -lSDL -lSDL_ttf -I/usr/include/SDL
$ ./main