Не открывается окно

#include <Windows.h>
#include <tchar.h>
 
LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
TCHAR WinName[] = _T("MainFrame");
 
int APIENTRY _tWinMain(HINSTANCE This, HINSTANCE Prev, LPTSTR cmd, int mode)
{
    HWND hWnd;
    MSG msg;
    WNDCLASS wc;
 
    wc.hInstance = This;
    wc.lpszClassName = WinName;
    wc.lpfnWndProc = WndProc;
    wc.style = CS_HREDRAW | CS_VREDRAW;
    wc.hIcon = LoadIcon(NULL, IDI_APPLICATION);
    wc.hCursor = LoadCursor(NULL, IDC_ARROW);
    wc.lpszMenuName = NULL;
    wc.cbClsExtra = 0;
    wc.cbWndExtra = 0;
    wc.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
 
    if (!RegisterClass(&wc))
        return 0;
    hWnd = CreateWindow(WinName, _T("Мое первое приложение Windows"),
        WS_OVERLAPPEDWINDOW,
        CW_USEDEFAULT,
        CW_USEDEFAULT,
        CW_USEDEFAULT,
        CW_USEDEFAULT,
        HWND_DESKTOP, NULL, This, NULL);
 
    while (GetMessage(&msg, NULL, 0, 0))
    {
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }
    return 0;
}
 
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    switch (message)
    {
    case WM_DESTROY: PostQuitMessage(0);
        break;
    default:
        return DefWindowProc(hWnd, message, wParam, lParam);
    }
    return 0;
}

#include <Windows.h>
 
LRESULT CALLBACK WindowProc(_In_ HWND hWnd, _In_ UINT uMsg, _In_ WPARAM wParam, _In_ LPARAM lParam) {
    switch (uMsg) {
    case WM_DESTROY:
        PostQuitMessage(0);
        break;
    }
    return DefWindowProc(hWnd, uMsg, wParam, lParam);
}
 
int CALLBACK WinMain(_In_ HINSTANCE hInstance, _In_ HINSTANCE hPrevInstance, _In_ LPSTR lpCmdLine, _In_ int nCmdShow) {
    WNDCLASSEX wc = {};
    wc.cbSize = sizeof(WNDCLASSEX);
    wc.style = CS_HREDRAW | CS_VREDRAW;
    wc.lpfnWndProc = WindowProc;
    wc.hInstance = hInstance;
    wc.hCursor = LoadCursor(NULL, IDC_ARROW);
    wc.lpszClassName = "WindowClass";
    RegisterClassEx(&wc);
    HWND hWnd = CreateWindow(wc.lpszClassName, "Test",
        WS_SYSMENU | WS_MINIMIZEBOX,
        (GetSystemMetrics(SM_CXSCREEN) - 1024) / 2,
        (GetSystemMetrics(SM_CYSCREEN) - 576) / 2,
        1024, 576, nullptr, nullptr, hInstance, 0);
    ShowWindow(hWnd, nCmdShow);
    MSG msg = {};
    while (msg.message != WM_QUIT)
        if (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE)) {
            TranslateMessage(&msg);
            DispatchMessage(&msg);
        }
    return static_cast<char>(msg.wParam);
}

// после строки  hWnd = CreateWindow( ... )
    ShowWindow(hWnd,mode);
    UpdateWindow(hWnd);

    while (GetMessage(&msg, NULL, 0, 0)> 0 )
    {
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }