python - PyQt4 signals and slots -

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i writing first python app pyqt4. have mainwindow , dialog class, part of mainwindow class:

self.logindialog = logindialog();

i use slots , signals. here's connection made in mainwindow:

qtcore.qobject.connect(self.logindialog, qtcore.signal("aa(str)"), self.login)

and try emit signal inside dialog class (i'm sure emitted):

self.emit(qtcore.signal("aa"), "jacek")

unfortunately, slot not invoked. tried no arguments well, different styles of emitting signal. no errors, no warnings in code. might problem?

you don't use same signal, when emitting , connecting.

qtcore.signal("aa(str)") not same qtcore.signal("aa"). signals must have same signature. way, if defining own signals, don't define parametres. write signal('aa'), because defining parametres thing c++ , python version of qt doesn't need this.

so should this:

qtcore.qobject.connect(self.logindialog, qtcore.signal("aa"), self.login)

and if pass parametres in emit, login method must accept parametres. check, if helps :-)


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