libSDL – Drawing a BMP Image

#include <iostream>

#include <SDL.h>

const int WIDTH = 640, HEIGHT = 360;

int main(int argc, char* argv[])
{
    SDL_Surface* imageSurface = NULL;
    SDL_Surface* windowSurface = NULL;

    if (SDL_Init(SDL_INIT_EVERYTHING) < 0)
    {
        std::cout << "SDL could not initialize! SDL Error: " << SDL_GetError() << std::endl;
    }

    SDL_Window* window = SDL_CreateWindow("Hello SDL World", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, WIDTH, HEIGHT, SDL_WINDOW_ALLOW_HIGHDPI);
    windowSurface = SDL_GetWindowSurface(window);

    if (NULL == window)
    {
        std::cout << "Could not create window: " << SDL_GetError() << std::endl;

        return EXIT_FAILURE;
    }

    SDL_Event windowEvent;

    imageSurface = SDL_LoadBMP("hello_world.bmp");
    if (imageSurface == NULL)
    {
        std::cout << "SDL could not load image! SDL Error: " << SDL_GetError() << std::endl;
    }

    while (true)
    {
        if (SDL_PollEvent(&windowEvent))
        {
            if (SDL_QUIT == windowEvent.type)
            {
                break;
            }
        }

        SDL_BlitSurface(imageSurface, NULL, windowSurface, NULL);

        //Update the surface
        SDL_UpdateWindowSurface(window);
    }

    SDL_FreeSurface(imageSurface);
    SDL_FreeSurface(windowSurface);

    imageSurface = NULL;
    windowSurface = NULL;

    SDL_DestroyWindow(window);
    SDL_Quit();

    return EXIT_SUCCESS;

}