Opening a Dialog from a MainWindow FileMenu

[jacek]

Preferences *prefs = new Preferences(this);

There is no such constructor declared in preferences.h --- there's only Preferences::Preferences().

prefs.exec();

prefs is a pointer, so it should be "prefs->exec();".

[nbkhwjm]

how should I declare this? and additional class?

[marcel]

1. You should use an additional class for your dialog, not the main window class.
2. The ui_porcupine.h file is automatically generated by the uic ( UI compiler ). All you have to do is include it in your dialog header. You must not modify/or care about this file, because it will be overwritten each time you modify something in the ui.

To show it using a menu, I think you first should read the Menus example in the Main Windows section from the examples and demos. This should help you a bit.

Also, have a look at the Qt Designer manual ( int the Assistant ).

BTW: what is a porcupine?
Edit - nevermind . I know now, but it sounds so funny...


Regards

[jacek]

how should I declare this?

It should be: "Porcupine::Porcupine( QWidget *parent = 0 )".