SDL_MOUSEWHEEL vs SDL_MouseWheelEvent

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    "Mouse Wheel Event Example",
8    SDL_WINDOWPOS_UNDEFINED,
9    SDL_WINDOWPOS_UNDEFINED,
10    800, 600,
11    SDL_WINDOW_SHOWN
12  );
13
14  SDL_Event event;
15  bool running = true;
16
17  while (running) {
18    while (SDL_PollEvent(&event)) {
19      if (event.type == SDL_MOUSEWHEEL) {
20        std::cout << "Mouse wheel scrolled\n"; 
21      }
22      if (event.type == SDL_QUIT) {
23        running = false;
24      }
25    }
26  }
27
28  SDL_DestroyWindow(window);
29  SDL_Quit();
30  return 0;
31}

1#include <SDL.h>
2#include <iostream>
3
4void HandleMouseWheel(SDL_MouseWheelEvent& wheel) {
5  std::cout << "Scroll amount: " << wheel.y << '\n'; 
6}
7
8int main(int argc, char* argv[]) {
9  SDL_Init(SDL_INIT_VIDEO);
10  SDL_Window* window = SDL_CreateWindow(
11    "Mouse Wheel Event Example",
12    SDL_WINDOWPOS_UNDEFINED,
13    SDL_WINDOWPOS_UNDEFINED,
14    800, 600,
15    SDL_WINDOW_SHOWN
16  );
17
18  SDL_Event event;
19  bool running = true;
20
21  while (running) {
22    while (SDL_PollEvent(&event)) {
23      if (event.type == SDL_MOUSEWHEEL) {
24        HandleMouseWheel(event.wheel);
25      }
26      if (event.type == SDL_QUIT) {
27        running = false;
28      }
29    }
30  }
31
32  SDL_DestroyWindow(window);
33  SDL_Quit();
34  return 0;
35}