// LoadLibraryTest.cpp : Defines the entry point for the application.
//

#include "stdafx.h"
#include <cstdio>
#include <shellapi.h>
#include "LoadLibraryTest.h"

int APIENTRY wWinMain(_In_ HINSTANCE hInstance,
    _In_opt_ HINSTANCE hPrevInstance,
    _In_ LPWSTR    lpCmdLine,
    _In_ int       nCmdShow)
{
    LPWSTR *szArglist;
    int nArgs;
    int i;

    szArglist = CommandLineToArgvW(GetCommandLineW(), &nArgs);
    if (NULL == szArglist)
    {
        return 0;
    }
    else
    {
        for (i = 0; i < nArgs; i++)
        {
            // skip executable name
            if (i == 0) continue;

            SetLastError(0);

            HMODULE hMod = LoadLibraryW(szArglist[i]);
            DWORD winError = GetLastError();

            wchar_t* error_msg = (wchar_t*)LocalAlloc(LMEM_ZEROINIT, MAX_PATH * sizeof(wchar_t));
            swprintf_s(error_msg, MAX_PATH, L"Library \"%s\" HMODULE 0x%08x %s GetLastError: 0x%08x", szArglist[i], hMod, hMod != 0 ? L"loaded" : L"not loaded", HRESULT_FROM_WIN32(winError));
            MessageBoxW(NULL, error_msg, L"Error", winError != 0 ? MB_ICONERROR : MB_ICONINFORMATION);
            LocalFree(error_msg);
        }

    }

    if (i == 1)
        MessageBoxW(NULL, L"Drag&Drop DLL file over this executable!", L"LoadLibraryTest", MB_ICONINFORMATION);

    LocalFree(szArglist);

    return 0;
}