mobiground/main.c

#include <stdio.h> // for fprintf()
#include <stdlib.h> // for exit()

#include <SDL3/SDL.h>
#include <SDL3/SDL_main.h> // only include this one in the source file with main()!


SDL_Window* window = NULL;
SDL_Renderer* renderer = NULL;

static void panic ( const char *text ) __attribute__((noreturn));

void panic ( const char *text )
{
  fprintf(stderr, "ERROR: %s. %s\n", text, SDL_GetError());
  SDL_DestroyRenderer(renderer);
  SDL_DestroyWindow(window);
  SDL_Quit();
  exit(1);
}

int main( int argc, char* argv[] )
{
    const int WIDTH = 640;
    const int HEIGHT = 480;
    bool loopShouldStop = false;

    if (!SDL_Init(SDL_INIT_VIDEO))
    {
        panic("SDL_Init failed");
    }

    window = SDL_CreateWindow("Hello SDL", WIDTH, HEIGHT, 0);
    if (!window) 
    {
      panic("SDL_CreateWindow");
    }

    renderer = SDL_CreateRenderer(window, 0);
    if (!renderer) 
    {
    panic("SDL_CreateRenderer");
    }

    SDL_SetRenderDrawColor(renderer, 255, 64, 0, 255);
    SDL_RenderClear(renderer);
    SDL_RenderPresent(renderer);

    while (!loopShouldStop)
    {
        SDL_Event e;
        SDL_zero(e);
        while (SDL_PollEvent(&e))
        {
            switch (e.type)
            {
                case SDL_EVENT_KEY_DOWN:
                    switch (e.key.mod)
                    {
                        case SDL_KMOD_LCTRL:
                            switch (e.key.key)
                            {
                                case SDLK_Q:
                                    SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_INFORMATION, "Hello OOPS!", "OOPS!", window);
                                    break;
                            }
                            break;
                    }
                    break;
                case SDL_EVENT_QUIT:
                    loopShouldStop = true;
                    break;
                default:
                    break;
            }
        }
    }
    SDL_DestroyRenderer(renderer);
    SDL_DestroyWindow(window);
    SDL_Quit();
    exit(0);
}