Toggle always-on-top with a key

1#include <SDL.h>
2#include <iostream>
3
4int main() {
5  if (SDL_Init(SDL_INIT_VIDEO) != 0) {
6    std::cout << "SDL_Init Error: "
7      << SDL_GetError() << '\n';
8    return 1;
9  }
10
11  SDL_Window* window =
12    SDL_CreateWindow("Always on Top Toggle",
13                     SDL_WINDOWPOS_CENTERED,
14                     SDL_WINDOWPOS_CENTERED,
15                     640, 480,
16                     SDL_WINDOW_SHOWN);
17  if (!window) {
18    std::cout << "SDL_CreateWindow Error: "
19      << SDL_GetError() << '\n';
20    SDL_Quit();
21    return 1;
22  }
23
24  bool running = true;
25  bool alwaysOnTop = false; 
26  SDL_Event event;
27
28  while (running) {
29    while (SDL_PollEvent(&event)) {
30      if (event.type == SDL_QUIT) {
31        running = false;
32      } else if (event.type == SDL_KEYDOWN) {
33        if (event.key.keysym.sym == SDLK_t) { 
34          alwaysOnTop = !alwaysOnTop; 
35          SDL_SetWindowAlwaysOnTop(    
36            window, alwaysOnTop); 
37          std::cout << "Always on top: "
38            << (alwaysOnTop
39                  ? "Enabled"
40                  : "Disabled") << '\n';
41        }
42      }
43    }
44  }
45
46  SDL_DestroyWindow(window);
47  SDL_Quit();
48  return 0;
49}