"int __cdecl invoke_main(void)" (?invoke_main@@YAHXZ)

#include <Windows.h>
#include <tchar.h>
 
 
LRESULT CALLBACK Procc(HWND hwnd, UINT uint, WPARAM wparam, LPARAM lparam)
{
    switch (uint)
    {
    case WM_DESTROY:
    {
        PostQuitMessage(0);
    }
    return 0;
    }
    return DefWindowProc(hwnd, uint, wparam, lparam);
}
 
int __stdcall WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR pCmdLine, int nCmdShow)
{
 
    WNDCLASSEX claex;
    claex.cbSize = sizeof(claex);
    claex.style = CS_HREDRAW | CS_VREDRAW;
    claex.cbClsExtra = 0;
    claex.cbWndExtra = 0;
    claex.hInstance = hInstance;
    claex.lpfnWndProc = Procc;
    claex.hbrBackground = (HBRUSH)(GetStockObject(BLACK_BRUSH));
    claex.hIconSm = LoadIcon(nullptr, IDI_APPLICATION);
    claex.hIcon = LoadIcon(nullptr, IDI_APPLICATION);
    claex.hCursor = LoadCursor(nullptr, IDC_ARROW);
    claex.lpszClassName = L"Main";
    claex.lpszMenuName = nullptr;
 
    if (!RegisterClassEx(&claex))
    {
        MessageBox(nullptr, L"Помилка", L"Помилка", NULL);
        return 1;
    }
 
    HWND hw;
    hw = CreateWindow(claex.lpszClassName, nullptr, WS_OVERLAPPEDWINDOW, 0, 0, 600, 600, NULL, NULL, hInstance, NULL);
 
    if (!hw)
    {
        MessageBox(NULL, L"Помилка", L"Помилка", NULL);
        return 1;
    }
 
    ShowWindow(hw, nCmdShow);
    UpdateWindow(hw);
    MSG msg;
 
    while (GetMessage(&msg, NULL, 0, 0))
    {
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }
 
    return (int)(msg.wParam);
 
}