问SDL图像呈现困难

EN

#include <iostream>
#include "SDL/SDL.h"

using std::cerr;
using std::endl;

int main(int argc, char* args[])
{
// Initialize the SDL
if (SDL_Init(SDL_INIT_VIDEO) != 0)
{
    cerr << "SDL_Init() Failed: " << SDL_GetError() << endl;
    exit(1);
}

// Set the video mode
SDL_Surface* display;
display = SDL_SetVideoMode(640, 480, 32, SDL_HWSURFACE | SDL_DOUBLEBUF);
if (display == NULL)
{
    cerr << "SDL_SetVideoMode() Failed: " << SDL_GetError() << endl;
    exit(1);
}

// Set the title bar
SDL_WM_SetCaption("SDL Tutorial", "SDL Tutorial");

// Load the image
SDL_Surface* image;
image = SDL_LoadBMP("LAND.bmp");
if (image == NULL)
{
    cerr << "SDL_LoadBMP() Failed: " << SDL_GetError() << endl;
    exit(1);
}

// Main loop
SDL_Event event;
while(1)
{
    // Check for messages
    if (SDL_PollEvent(&event))
    {
        // Check for the quit message
        if (event.type == SDL_QUIT)
        {
            // Quit the program
            break;
        }
    }
    // Game loop will go here...
    // Apply the image to the display
    if (SDL_BlitSurface(image, NULL, display, NULL) != 0)
    {
        cerr << "SDL_BlitSurface() Failed: " << SDL_GetError() << endl;
        exit(1);
    }

    //Update the display
    SDL_Flip(display);

}

// Tell the SDL to clean up and shut down
SDL_Quit();

return 0;    
}