Win32/COM and translations in Qt

fralik

Hi!

I am currently using some code that is able to load DLL through COM, so it is pure Win32. However, I started to write my plugin in Qt for several reasons. Unfortunately, I can not just write everything in Qt, so COM-related code must be there.

So far I am creating my QApplication with this code:
@
QApplication* app = NULL;
HHOOK hhook;

LRESULT CALLBACK QtFilterProc(int nCode, WPARAM wParam, LPARAM lParam)
{
if (qApp)
{
qApp->sendPostedEvents(0, -1);
}

return CallNextHookEx(hhook, nCode, wParam, lParam);

}

BOOL APIENTRY DllMain(HMODULE hModule, DWORD ul_reason_for_call,
LPVOID lpReserved)
{
int argc = 0;
char** argv = 0;
switch (ul_reason_for_call)
{
case DLL_PROCESS_ATTACH:

    app = new QWinApplication(argc, argv);
    QT_WA(
    {
        hhook = SetWindowsHookExW(WH_GETMESSAGE, QtFilterProc, 0, GetCurrentThreadId());
    },
    {
        hhook = SetWindowsHookExA(WH_GETMESSAGE, QtFilterProc, 0, GetCurrentThreadId());
    });
    break;
case DLL_THREAD_ATTACH:
    break;
case DLL_THREAD_DETACH:
    break;
case DLL_PROCESS_DETACH:
    UnhookWindowsHookEx(hhook);
    if (app)
    {
        app->quit();
        delete app;
    }
    break;
}
return TRUE;

}
@

Then I am creating Widgets, installing translation just like in any other Qt application. Everything except translations works fine. I am sure that translation files are loaded successfully. If I build standalone .exe file instead of .dll, then GUI is translated. I tried to invoke retranslateUi function manually, but this also had no effect.

The questions are:

Does anyone have a clue why translation could fail even if .qm files are loaded and installed correctly?

What possible events/messages do I miss to forward to my UI?

Thanks.

fralik

I figured out the problem. I was creating the QTranslator on stack in DllMain. Instead of this I should either create it on heap or make it static.