Call GUI Dll from non-Qt application

[barak]

OK one last question: if the Java application will not periodically call QApplication:rocessEvents() it will not work? I can not call QApplication:rocessEvents() from my code correct?

[wysota]

OK one last question: if the Java application will not periodically call QApplication:rocessEvents() it will not work?

It depends how you wish to implement it. You need to call your dialog in the context of the same thread the QApplication object was created in. The first thing I'd try would be to create the application object in the same function you are creating the dialog itself.

I can not call QApplication:rocessEvents() from my code correct?

Unless your code is called several times each second then no. But you should be able to inject some code into the java app (i.e. setup some timer or something like that). An alternative is to have a helper application in pure C++/Qt and only communicate with it from your two functions using some IPC mechanisms. Your init function would start the application and the other function would communicate with it through shared memory, pipes, sockets or similar mechanisms.

[barak]

Some thing like this?

bool aseLogin(aseVerifyData& aseData)
{
    m_iLastSlotId = aseData.slotID;
	QApplication * a = 0;	
    int argc = 1;
    char *argv[] = { "asePinDialog", NULL };
    a = new QApplication(argc, argv);     
 
    if(aseData.pinType == KEY_TYPE_CHAL_RESP)
    {
        VerifyPin3Des *pinDlg = new VerifyPin3Des(aseData);
        m_pOpenDialog = pinDlg;
        pinDlg->exec();
        delete pinDlg;
        m_pOpenDialog = NULL;
    }
    else
    {
        VerifyPinSig *pinDlg = new VerifyPinSig(aseData);
        m_pOpenDialog = pinDlg;
        pinDlg->exec();
        delete pinDlg;
        m_pOpenDialog = NULL;
    }
 
    m_iLastSlotId = 0;
    return true;
}

bool aseLogin(aseVerifyData& aseData)
{
    m_iLastSlotId = aseData.slotID;
	QApplication * a = 0;	
    int argc = 1;
    char *argv[] = { "asePinDialog", NULL };
    a = new QApplication(argc, argv);     

    if(aseData.pinType == KEY_TYPE_CHAL_RESP)
    {
        VerifyPin3Des *pinDlg = new VerifyPin3Des(aseData);
        m_pOpenDialog = pinDlg;
        pinDlg->exec();
        delete pinDlg;
        m_pOpenDialog = NULL;
    }
    else
    {
        VerifyPinSig *pinDlg = new VerifyPinSig(aseData);
        m_pOpenDialog = pinDlg;
        pinDlg->exec();
        delete pinDlg;
        m_pOpenDialog = NULL;
    }

    m_iLastSlotId = 0;
    return true;
}

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[wysota]

Apart from memory leaks (why use pointers here if all objects are only used in local context?), yes.

[barak]

You are correct !!

Thank you very much it is WORKING !!! I have managed to show the dialog and work with it.

Again, many thanks

Keep on with the great job your doing.