SDL2 Hello World教程以错误告终

我在Windows 8.1机器上使用VS2013进行开发。该窗口在屏幕上短暂闪烁（尽管代码中有2秒的延迟）。

这是所有的代码：

#include <SDL.h>
#include <iostream>
int main(int argc, char **argv)
{
if (SDL_Init(SDL_INIT_EVERYTHING) != 0){
    std::cout << "SDL_Init Error: " << SDL_GetError() << std::endl;
    return 4;
}
//open a window
SDL_Window *win = SDL_CreateWindow("Hello World!", 100, 100, 640, 480, SDL_WINDOW_SHOWN);
if (win == nullptr){
    std::cout << "SDL_CreateWindow Error: " << SDL_GetError() << std::endl;
    return 3;
}
//renderer
SDL_Renderer *ren = SDL_CreateRenderer(win, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
if (ren == nullptr){
    std::cout << "SDL_CreateRenderer Error: " << SDL_GetError() << std::endl;
    return 2;
}
//load bitmap
SDL_Surface *bmp = SDL_LoadBMP("helloworld.jpg");
if (bmp == nullptr){
    std::cout << "SDL_LoadBMP Error: " << SDL_GetError() << std::endl;
    return 6;
}
SDL_Texture *tex = SDL_CreateTextureFromSurface(ren, bmp);
SDL_FreeSurface(bmp);
if (tex == nullptr){
    std::cout << "SDL_CreateTextureFromSurface Error: " << SDL_GetError() << std::endl;
    return 5;
}
SDL_RenderClear(ren);
SDL_RenderCopy(ren, tex, NULL, NULL);
SDL_RenderPresent(ren);
SDL_Delay(2000);

return 0;
}

它以代码6退出。我以为它找不到helloworld.jpg文件。但是，它就在那里。我把它从一个地方移到另一个地方，希望自己只是个白痴。运气不好。它当前与.exe文件位于同一目录中。