C/Visual C - Timer en C para windows

#include <windows.h>

LRESULT CALLBACK WindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam) {

    switch (uMsg) {

        case WM_TIMER:

            // Aquí manejas el evento del timer

            MessageBox(hwnd, "Timer triggered!", "Notification", MB_OK);

            break;

        case WM_DESTROY:

            PostQuitMessage(0);

            return 0;

        default:

            return DefWindowProc(hwnd, uMsg, wParam, lParam);

    }

    return 0;

}

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nShowCmd) {

    // Registro de la clase de la ventana

    const char CLASS_NAME[] = "Sample window class";

    WNDCLASS wc = { };

    wc.lpfnWndProc = WindowProc;

    wc.hInstance = hInstance;

    wc.lpszClassName = CLASS_NAME;

    RegisterClass(&wc);

    // Crear la ventana

    HWND hwnd = CreateWindowEx(

        0, CLASS_NAME, "Timer example",

        WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,

        NULL, NULL, hInstance, NULL

    );

    ShowWindow(hwnd, nShowCmd);

    // Crear el timer

    SetTimer(hwnd, 1, 1000, NULL); // Timer ID 1, cada 1000 ms (1 segundo)

    // Bucle de mensajes

    MSG msg;

    while (GetMessage(&msg, NULL, 0, 0)) {

        TranslateMessage(&msg);

        DispatchMessage(&msg);

    }

    return 0;

}