loop

void Game::Run()
{
    LARGE_INTEGER li;
    Double frequency;
    Double time;
    bool done, result;

    // Get the high-resolution timer frequency
    result = QueryPerformanceFrequency(&li);
    if(!result) { return; }

    // Set the timer frequency to milliseconds
    frequency = (double)li.QuadPart / 1000.0;

    // Loop until the engine wants to quit
    done = false;
    while(!done)
    {
        // Reset the timer
        QueryPerformanceCounter(&li);
        time = li.QuadPart;

        // Do frame processing
        result = Frame();
        if(!result) { done = true; }

        // Get the elasped time
        QueryPerformanceCounter(&li);
        time = li.QuadPart - time;
        time /= frequency;

        // Sleep
        Long sleeptime = mFrameTime - time;
        Sleep(max(sleeptime, 0));
    }

    return;
}