Sdl Window Does Not Show

Window not displaying SDL2

I just needed an event loop. I added this code and it worked:

    SDL_bool quit = SDL_FALSE;
    while(!quit)
    {
        SDL_RenderPresent(renderer);
        SDL_WaitEvent(&event);
        if(event.type == SDL_QUIT)
            quit = SDL_TRUE;
    }

Thank you to HolyBlackCat for your comment!

SDL Window does not show even with Event Loop

You need to include SDL_MainReady as you are not using SDL_main.

See here

So you code would be adjusted like

int main() {
    SDL_Window* window;

    SDL_SetMainReady();
    SDL_Init(SDL_INIT_EVERYTHING);

    ...

    return 0;
}

SDL window not showing?

Like the others state, your program terminates immediately so the window should "flash" momentarily. You can have the window appear for a few seconds by using SDL_Delay:

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;
    SDL_Quit();
    return 1;
}

SDL_Delay(2000);

SDL_DestroyWindow(win);
SDL_Quit();

And remember to call SDL_DestroyWindow.

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A while(true) {} loop will just cause your program to freeze. You probably want something like the following so that it listens for events, and you can close the window at your leisure.

SDL_Event e;
bool quit = false;
while (!quit){
    while (SDL_PollEvent(&e)){
        if (e.type == SDL_QUIT){
            quit = true;
        }
        if (e.type == SDL_KEYDOWN){
            quit = true;
        }
        if (e.type == SDL_MOUSEBUTTONDOWN){
            quit = true;
        }
    }
}

Make an sdl window not show up on the menubar

Take a look to SDL_WindowFlags, SDL_WINDOW_SKIP_TASKBAR is what you are looking for.

Uint32 flags = SDL_WINDOW_SKIP_TASKBAR;
SDL_Window * window = SDL_CreateWindow(
    /* ... */
    flags
);

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