Handling Window Resize Events in SDL2

1#include <SDL.h>
2#include <iostream>
3
4int main(int argc, char** argv) {
5  SDL_Init(SDL_INIT_VIDEO);
6  SDL_Window* window = SDL_CreateWindow(
7    "Resize Example",
8    100, 100, 640, 480,
9    SDL_WINDOW_RESIZABLE
10  );
11  SDL_Renderer* renderer = SDL_CreateRenderer(
12    window, -1, SDL_RENDERER_ACCELERATED);
13
14  bool running = true;
15  SDL_Event event;
16  while (running) {
17    while (SDL_PollEvent(&event)) {
18      if (event.type == SDL_QUIT)
19        running = false;
20      if (
21        event.type == SDL_WINDOWEVENT &&
22        event.window.event == SDL_WINDOWEVENT_RESIZED
23      ) {
24        std::cout << "Window resized to "
25          << event.window.data1 << "x"
26          << event.window.data2 << "\n";
27        SDL_RenderSetLogicalSize(renderer,
28          event.window.data1, event.window.data2);
29      }
30    }
31
32    SDL_SetRenderDrawColor(renderer, 0, 0, 0, 255);
33    SDL_RenderClear(renderer);
34    // Rendering code here
35    SDL_RenderPresent(renderer);
36  }
37
38  SDL_DestroyRenderer(renderer);
39  SDL_DestroyWindow(window);
40  SDL_Quit();
41  return 0;
42}