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_gfxPrimitives.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); SDL_FillRect(screen, &screen->clip_rect, SDL_MapRGB(screen->format, 0x00, 0x00, 0x00)); SDL_Flip(screen); SDL_Event event; while (1) { if (SDL_PollEvent(&event)) { if (event.type == SDL_MOUSEMOTION) { int x = 0, y = 0; SDL_GetMouseState(&x, &y); sprintf(buf, "mouse pos: %d %d", x, y); SDL_FillRect(screen, &screen->clip_rect, SDL_MapRGB(screen->format, 0x00, 0x00, 0x00)); stringRGBA(screen, 100, 100, buf, 0xff, 0xff, 0xff, 0xff); SDL_Flip(screen); } if ((event.type == SDL_MOUSEBUTTONUP) || (event.type == SDL_MOUSEBUTTONDOWN)) { break; } } SDL_Delay(100); } SDL_Quit(); return 0; }
編譯、執行
$ gcc main.c -o main -lSDL -lSDL_gfx -I/usr/include/SDL $ ./main