cannot call member function without object

[been_1990]

If I do this:

QApp *app = qobject_cast<QApp>(qApp);
      app->mouseCoords(...); // what is this exactly? Am I not supposed to use connect()?

QApp *app = qobject_cast<QApp>(qApp);
      app->mouseCoords(...); // what is this exactly? Am I not supposed to use connect()?

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Then what happens to this?

QApp a(argc, argv);

QApp a(argc, argv);

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Thanks for the help.