SDL Create window not creating window on Mac os X - c

Question

I am following the Lazy Foo tutorial on SDL.
When creating a window with SDL_WINDOW_SHOWN and running the binary the menu bar appears, but the window does not. Need some direction on what I can do to further debug this.
I've also tried to manually set window position with no luck.
SDL_CreateWindow("SDL Tutorial", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED,
SCREEN_WIDTH, SCREEN_HEIGHT, SDL_WINDOW_SHOWN);
SDL_CreateWindow("SDL Tutorial", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED,
SCREEN_WIDTH, SCREEN_HEIGHT, SDL_WINDOW_SHOWN);
SDL_CreateWindow("SDL Tutorial", 100, 100, SCREEN_WIDTH, SCREEN_HEIGHT, SDL_WINDOW_SHOWN);
Everything compiles successfully and SDL_GetError() does not produce any errors. I logged to a file to confirm.
#include <SDL2/SDL.h>
#include <stdio.h>
//Screen dimension constants
const int SCREEN_WIDTH = 640;
const int SCREEN_HEIGHT = 480;
int main(int argc, const char * argv[]) {
FILE *log_file;
log_file = fopen("log.log", "a+");
//The window we'll be rendering to
SDL_Window* window = NULL;
//The surface contained by the window
SDL_Surface* screenSurface = NULL;
//Initialize SDL
if (SDL_Init(SDL_INIT_VIDEO) < 0 )
{
fprintf(log_file, "SDL could not initialize! SDL_Error: %s\n", SDL_GetError());
}
else
{
//Create window
window = SDL_CreateWindow("SDL Tutorial", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED,
SCREEN_WIDTH, SCREEN_HEIGHT, SDL_WINDOW_SHOWN);
if (window == NULL)
{
fprintf(log_file, "Window could not be created! SDL_Error: %s\n", SDL_GetError());
}
else
{
//Get window surface
screenSurface = SDL_GetWindowSurface(window);
//Fill the surface white
SDL_FillRect(screenSurface, NULL, SDL_MapRGB(screenSurface->format, 0xFF, 0xFF, 0xFF));
//Update the surface
SDL_UpdateWindowSurface(window);
fprintf(log_file, "SDL_Error: %s\n", SDL_GetError());
//Wait two seconds
SDL_Delay(2000);
}
}
//Destroy window
SDL_DestroyWindow(window);
//Quit SDL subsystems
SDL_Quit();
return 0;
}

Answer 1

The reason it was not working was because I did not have an event loop set up.
I the documentation on how to draw a line and got an example there.
SDL_Event event;
while (SDL_PollEvent(&event)) {
if (event.type == SDL_QUIT) {
done = SDL_TRUE;
}
}