15-2.c

《linux应用开发技术详解》的配套代码

#include <SDL.h>
int main()
{
    SDL_Surface *screen;
    Uint32 color;
    if ( SDL_Init( SDL_INIT_VIDEO) < 0 ) {
        fprintf(stderr, "无法初始化SDL: %s\n", SDL_GetError());
        exit(1);
    }
    screen = SDL_SetVideoMode(640, 480, 16, SDL_SWSURFACE);  /* 640×480×16位色 */
    if ( screen == NULL ) {
        fprintf(stderr, "无法设置640x480x16位色的视频模式：%s\n", SDL_GetError());
        exit(1);
    }
    atexit(SDL_Quit);
    color = SDL_MapRGB(screen->format,0,0,255);  /* 蓝色 */
    SDL_FillRect(screen,&screen->clip_rect,color);  /* 整个屏幕填充颜色 */
    SDL_UpdateRect(screen,0,0,0,0);              /* 更新整个屏幕 */
    SDL_Delay(5000);                          /* 延迟5秒钟 */
}