Извиняюсь за отсутствие отступов. Вот исправленный код

```c
case WM_PAINT: {
        PAINTSTRUCT ps;
        BeginPaint(hWnd, &ps);
        paint(hWnd);
        EndPaint(hWnd, &ps);
        return 0;
    }
case WM_SIZE:
    mutator::resize({LOWORD(lParam), HIWORD(lParam)});
    return 0;
case WM_TIMER:
    if (!run_timer) 
        return 0;
    switch (wParam) {
        case 1:
            n_timer1000->run(0, n_timer1000, flag_run);
            if (!master_obl_izm.empty()) 
                paint(hWnd);
            break;
        case 2:
            n_timer250->run(0, n_timer250, flag_run);
            break;
    }
    return 0;
}
```
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