Re: [PyKDE] Emit a signal from a QCheckTableItem

[Daryl Dusheiko]

Thanks for your quick reply. I thought that it was possible to have multiple inheritance in Python. My original problem was to have a checkbox item in a table cell which could emit a signal when clicked. What I've done is to make a QObject data member as part of my CheckBoxItem class. Is this the only way to get this class to emit a signal when clicked? My class looks as follows: class CheckBoxTableItem(QTableItem):     def __init__(self, parent, table, text):         QTableItem.__init__(self, table, QTableItem.Always, text)         self.emitter = QObject(parent)         self.checkbox = None     def setContentFromEditor(self, w):         print 'CheckBoxTableItem::setContentFromEditor ' #DFD         if self.checkbox:             self.setText(self.checkbox.text())     def createEditor(self):         print 'CheckBoxTableItem::createEditor ' #DFD         self.checkbox = QCheckBox(self.table().viewport())         self.checkbox.connect(self.checkbox, SIGNAL("clicked()"), self.__Clicked)         self.checkbox.setText(self.text())         self.checkbox.show()         return self.checkbox     def __Clicked(self):         self.emitter.emit(PYSIGNAL("Clicked()"), ()) It's created as follows:         checkItem = CheckBoxTableItem(self, self.testStatusTable, "Start")         self.connect(checkItem.emitter, PYSIGNAL("Clicked()"), self.__CheckItemClicked)         self.testStatusTable.setItem(row, 0, checkItem) Cheers Daryl Phil Thompson wrote: On Wednesday 26 April 2006 7:44 am, Daryl Dusheiko wrote: Hi, I would like to add a CheckBox to a cell in a QTable that sends a signal when the check box is clicked. The existing QCheckTableItem does not emit any signals. I've specialised the class from both the QTableItem and QObject classes. When I create the new class and add the item to the table I get the following error: File "/home/daryld/BurninTest/BurninTestDialog.py", line 29, in __init__ 29, in __init__ QTableItem.__init__(self, table, edittype, text) TypeError: argument 2 of QObject() has an invalid type My class looks as follows: class CheckBoxTableItem(QObject, QTableItem): def __init__(self, table, edittype, text): QObject.__init__(self) QTableItem.__init__(self, table, edittype, text) # !!! THIS IS LINE 29 !!! self.checkbox = None def setContentFromEditor(self, w): if self.checkbox: self.setText(self.checkbox.text()) def createEditor(self): self.checkbox = QCheckBox(self.table().viewport()) self.checkbox.connect(self.checkbox, SIGNAL("clicked()"), self.__Clicked) self.checkbox.setText(self.text()) self.checkbox.show() return self.checkbox def __Clicked(self): self.emit(PYSIGNAL("Clicked()"), ()) The code where the object is created and is added to the table looks as follows: checkItem = CheckBoxTableItem(self.testStatusTable, QTableItem.Always, "Start") self.connect(checkItem, SIGNAL("clicked()"), self.__CheckItemClicked) self.testStatusTable.setItem(row, 0, checkItem) Please could someone help me get rid of this error or suggest another way to get a signal when I click a check box in a table cell. You can't inherit from more than one wrapped class at a time. Phil ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please visit http://www.messagelabs.com/email ______________________________________________________________________

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