c++ - How to use Qt widgets in a plugin for a Gtkmm based application? -


i develop gtkmm based application, can extended through plugin mecanism. each plugin must define show() method

void myextension::show() {   // here code of extension }

i trying develop plugin uses qt widgets. newbie in qt, tried following simple code:

void myextension::show() {   int argc = 1;   char argv1[] = "myapp";   char* argv[] = { argv1, null };   qapplication app(argc, argv);    qmessagebox::question(null, "title", "what?", qmessagebox::yes|qmessagebox::no);    app.exec();   app.exit(); }

this source code builds perfectly, first execution of plugin ok (the dialog box shown), after first execution of plugin, qapplication seems perturb gtk event loop. messages ones:

gtk-critical **: ia__gtk_container_add: assertion `gtk_is_container (container)' failed  gtk-critical **: ia__gtk_widget_realize: assertion `gtk_widget_anchored (widget) || gtk_is_invisible (widget)' failed

and application crashes on third or fourth execution of plugin.

any idea develop plugins (=shared lib loaded @ runtime) qt widgets, , plugged gtkmm app? lot.


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