SDL_Event 问题，急急急，会的来指导下，谢谢！！！！！！！！！！！！！！！

404920681

#include <SDL/SDL.h>
void ShowBMP(char *filename,SDL_Surface *screen,int x,int y)
{
SDL_Surface *image;
SDL_Rect dest;

image=SDL_LoadBMP(filename);
if(image==NULL)
{
        fprintf(stderr,"无法加在%s:%s\n",SDL_GetError());
    return;
}
dest.x=100;
dest.y=200;
dest.w=image->w;
dest.h=image->h;
SDL_BlitSurface(image,NULL,screen,&dest);
SDL_UpdateRects(screen,1,&dest);
}

int main()
{
SDL_Surface *screen;
if(SDL_Init(SDL_INIT_VIDEO)<0)
{
fprintf(stderr,"无法初始化SDL%s\n",SDL_GetError());
exit(1);
}
screen=SDL_SetVideoMode(800,600,16,SDL_SWSURFACE);
if(screen==NULL)
{
fprintf(stderr,"无法设置%s\n",SDL_GetError());
exit(1);
}
/* SDL_Event event;
while(SDL_PollEvent(&event))
  {
        switch(event.type)
    {
     case SDL_KEYDOWN:
     printf("anykey down");
     ShowBMP("test.bmp",screen,10,10);break;
     //exit(0);
     case SDL_MOUSEMOTION:
     printf("mouse from %d, %dto %d,%d\n",event.motion.xrel,event.motion.yrel,event.motion.x,event.motion.y);
     break;
     case SDL_MOUSEBUTTONDOWN:
     printf("%d down%d %d\n",event.button.button,event.button.x,event.button.y);
     break;
     case SDL_QUIT:
     exit(0);
    }
  }*/

SDL_Event event;
SDL_WaitEvent(&event);
switch(event.type)
{
    case SDL_KEYDOWN:
    case SDL_KEYUP:
     ShowBMP("test.bmp",screen,10,10);
     SDL_Delay(5000);
     break;
   
    case SDL_QUIT:
    exit(0);
}
／／SDL_Delay(5000);
atexit(SDL_Quit);

}
我想实现在键盘按下后，加载一副图片可是，上面的两种方法都试了，不起作用阿。要么一闪而过，要么不响应事件，为什么？希望得到指正，谢谢了。

404920681

问题以解决。