PyQt : Signal like this

[prashant]

I am creating <QAction> in a loop and adding it to menu.

for fileName in fileNames:
    action = QtGui.QAction(QtGui.QIcon(iconFile), fileName, menu)
    menu.addAction(action)

for fileName in fileNames:
    action = QtGui.QAction(QtGui.QIcon(iconFile), fileName, menu)
    menu.addAction(action)

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I need to connect this action to a python function in such a way that I should get <text> of QAction <fileName> or instance of QAction object itself.

For example If action name is required

def contextMenuAction(self, actionName):
        print actionName

def contextMenuAction(self, actionName):
        print actionName

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If action object is required

def contextMenuAction(self, actionObject):
        myData = actionObject.data()

def contextMenuAction(self, actionObject):
        myData = actionObject.data()

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How do I setup action and slot? Logically it would be like this:

self.connect(action, QtCore.SIGNAL("triggered()"), self, QtCore.SLOT("contextMenuAction(str)"), fileName)
self.connect(action, QtCore.SIGNAL("triggered()"), self, QtCore.SLOT("contextMenuAction(object)"), action)

self.connect(action, QtCore.SIGNAL("triggered()"), self, QtCore.SLOT("contextMenuAction(str)"), fileName)
self.connect(action, QtCore.SIGNAL("triggered()"), self, QtCore.SLOT("contextMenuAction(object)"), action)

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[wysota]

Take a look at QSignalMapper.

[prashant]

QxColorPicker has been created by sub classing QtGui.QWidget.

The old style connection method is working fine.

// Connect picker->slider
        #QtCore.QObject().connect(self.qColorPicker, QtCore.SIGNAL("brightnessChanged(int)"),
                    #self.qSlider, QtCore.SLOT("setValue(int)"))

// Connect picker->slider
        #QtCore.QObject().connect(self.qColorPicker, QtCore.SIGNAL("brightnessChanged(int)"),
                    #self.qSlider, QtCore.SLOT("setValue(int)"))

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The new style method is not working.

self.qColorPicker.brightnessChanged.connect(self.qSlider.setValue)

self.qColorPicker.brightnessChanged.connect(self.qSlider.setValue)

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I am getting an error saying:

AttributeError: 'QxColorPicker' object has no attribute 'brightnessChanged'

AttributeError: 'QxColorPicker' object has no attribute 'brightnessChanged'

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In <QxColorPicker>, I am emitting <brightnessChanged> signal at two places like this:

self.emit(QtCore.SIGNAL("brightnessChanged(int)", self.myColor.value()))

self.emit(QtCore.SIGNAL("brightnessChanged(int)", self.myColor.value()))

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suggestions?

[wysota]

But what do you want from us?

[prashant]

What's wrong with my new style syntax? Why it's not working?

self.qColorPicker.brightnessChanged.connect(self.qSlider.setValue)

self.qColorPicker.brightnessChanged.connect(self.qSlider.setValue)

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[wysota]

Obviously the object has no such attribute.