Не понятно в чём ошибка

#include "Windows.h"
 
int CALLBACK wWinMain(HINSTANCE hInstance, HINSTANCE, PWSTR szCmdLine, int nCmdShow) 
{
    MSG msg{};
    HWND hwnd{};
    WNDCLASSEX wc{sizeof(WNDCLASSEX)};
    wc.cbClsExtra = 0;
    wc.cbWndExtra = 0;
    wc.hbrBackground = reinterpret_cast<HBRUSH>(GetStockObject(WHITE_BRUSH));
    wc.hCursor = LoadCursor(nullptr, IDC_ARROW);
    wc.hIcon = LoadIcon(nullptr, IDI_APPLICATION);
    wc.hIconSm = LoadIcon(nullptr, IDI_APPLICATION);
    wc.hInstance = hInstance;
    wc.lpfnWndProc = [](HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)->LRESULT 
    {
        switch (uMsg)
        {
            case WM_DESTROY:
            {
                PostQuitMessage(EXIT_SUCCESS);
            }
            return 0;
        }
        return DefWindowProc(hWnd, uMsg, wParam, lParam);
    };
    wc.lpszClassName = L"MyWindow";
    wc.lpszMenuName = nullptr;
    wc.style = CS_VREDRAW | CS_HREDRAW;
 
    if (!RegisterClassEx(&wc))
        return EXIT_FAILURE;
 
    if (hwnd = CreateWindow(wc.lpszClassName, L"HEAD", WS_OVERLAPPEDWINDOW, 0, 0, 600, 600, nullptr, nullptr, wc.hInstance, nullptr); hwnd == INVALID_HANDLE_VALUE)
        return EXIT_FAILURE;
 
    ShowWindow(hwnd, nCmdShow);
    UpdateWindow(hwnd);
 
 
    while (GetMessage(&msg, nullptr, 0, 0))
    {
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }
 
    return static_cast<int>(msg.wParam);
}