I find some problem when using ActiveQt in 5.0.0, windows XP Sp3 VS2010.
Active Control based on QAxbase will not enter a correct event loop unless QCoreApplication::processEvents() is called immediately after ui setup (my control has sub widgets, such as QListView and QTreeView). We will mostly get a white-style blocked widget area if processEvents is not called in-time.
Even if the control has been successfully created using processEvents(), some problems still happen. Anytime I want to create a new widget from control, eg, a floatbar, processEvents must be called again immediately after creation statement.
I tested my control in C#, MFC, ActiveX test container from microsoft. Just create a ActiveX server with default options, and put a widget (such as ListView) on it, and have a test .