Getting compliation error in using connect in pyqt4

Qt Enthusiast

I have 2 objects in a class

QtCore.QObject.connect(self.voTreeView,QtCore.SIGNAL("copySignal(list)"),self.metricsTreeView,QtCore.SLOT(self.metricsTreeView.clipboardData))

I have my own customised signal and I want to send the list from one object to other object

I am getting following error

QtCore.QObject.connect(self.voTreeView,QtCore.SIGNAL("copySignal(list)"),self.metricsTreeView,QtCore.SLOT(self.metricsTreeView.clipboardData))
TypeError: SLOT(str): argument 1 has unexpected type 'instancemethod'

Could you please let me know how correct the compilation issue

JonB

@Qt-Enthusiast said in Getting compliation error in using connect in pyqt4:

QtCore.QObject.connect(self.voTreeView,QtCore.SIGNAL("copySignal(list)"),self.metricsTreeView,QtCore.SLOT(self.metricsTreeView.clipboardData))
TypeError: SLOT(str): argument 1 has unexpected type 'instancemethod'

Your QtCore.SIGNAL("...")correctly takes a string parameter. In your QtCore.SLOT(self.metricsTreeView.clipboardData) you are passing a method/callable instead of a string. Doesn't QtCore.SLOT() require a string like QtCore.SIGNAL() does? I suspect you intend:

QtCore.QObject.connect(self.voTreeView, QtCore.SIGNAL("copySignal(list)"), self.metricsTreeView, self.metricsTreeView.clipboardData)

You probably already know that you would benefit from moving to PyQt5. But even later versions of PyQt4 introduced support for new-style signal/slots, which would have helped here. Is this legacy code which is no longer actively developed?

Qt Enthusiast

https://paste.ofcode.org/eG2QgwngRbwJdq933jdKS3

Not working . Can u some one tell the solution

t](image url)

JonB

@Qt-Enthusiast
Since your latest code paste uses new-style signal/slot syntax for connect(), why did you bother asking about your old-style QtCore.QObject.connect(...) code?

JonB

@Qt-Enthusiast
In your pasted code:

t1.mysignal = QtCore.pyqtSignal(list)

How is this setting a class variable? It is setting an instance variable, while you need it to be a class variable in class Test.