How to use qwebkit module in a Qt library where no QApplication instance available?

[quantity]

Here I have a problem:

I want to create a QT library used by other C or C++ program. In this library, I use qtwebkit module to do some html and http work. According to QT's requirement, there must be a QApplication (not QCoreApplication) before qtwebkit objects, such as QWebPage can be used. However, we plan to use the library in a console application. In this situation, there's no main function in the library where I can define a QApplication object myself (QApplication a(argc, argv).

Is there any suggestion on this? Can I init a QApplication object in the library myself? What's more, I'm using other threads in the library, which is more confusing.

[JohannesMunk]

Hi!

Yes, you can create a QApplication yourself and give it a thread to live in. That's what I did in a library intended to be used by non qt applications.

class QtAppLoop : public QThread
{
protected:
    void run() {
        static int argc = 1;
        static char* argv[] = {(char*)"dummy.exe", NULL };
        QCoreApplication* app = new QCoreApplication(argc,argv);
        app->exec();
    }
};
 
QtAppLoop* apploop = 0;
 
void init()
{
    if (QCoreApplication::instance() == NULL)
    {
        apploop = new QtAppLoop();
        apploop->start(QThread::LowPriority);
    }
}

class QtAppLoop : public QThread
{
protected:
    void run() {
        static int argc = 1;
        static char* argv[] = {(char*)"dummy.exe", NULL };
        QCoreApplication* app = new QCoreApplication(argc,argv);
        app->exec();
    }
};

QtAppLoop* apploop = 0;

void init()
{
    if (QCoreApplication::instance() == NULL)
    {
        apploop = new QtAppLoop();
        apploop->start(QThread::LowPriority);
    }
}

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There are probably better solutions than this, but it worked for me!

HIH

Joh