pyqt: connect signal dynamically with user-supplied variables?

I create a dialog with a custom class:

d = ModifyRect(ctrl_name, rect_name)

It is shown modelessly. When it is accepted or rejected, I want to call a function on my MainWindow passing in these two variables, i.e. this slot should be called:

@QtCore.p开发者_如何学GoyqtSlot("QString","QString")
def modifyRectAccepted(self, ctrl_name, rect_name):
    #foo

How do I go about connecting d's accepted to my MainWindow's modifyRectAccepted, passing in those 2 parameters? Or even, connect the two, but at least pass the ModifyRect instance in so I can grab them from there.

in pygtk this is pretty simple - you can pass more variables into connect and they are forwarded, and in any case the emitting widget is always passed in. What's the equivalent concept in PyQt?

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You cannot do that directly. You need to use signal mapper or intermediate slot. See this question answered a few days ago.

Or, if you're just interested in the source of the signal, use QObject's sender() method.

EDIT: To use closures as intermediate slots you must use the New-syle signal and slot paradigm. This way is more pythonic and lets you specify any callable. Like this:

d = ModifyRect()

l = lambda: modifyRectAccepted(ctrl_name, rect_name)
d.accepted.connect(l)

def modifyRectAccepted(self, ctrl_name, rect_name):
    #foo