Catch mouse button pressed signal from qComboBox popup menu

Question

I have made multi-select QComboBox. Items are checkable (every item have check box and text value). CheckBox is checked only when user click on it. What I want

Answer 1

You need to connect a handler to the pressed signal of the combo's view:

    self.ui.comboBox.view().pressed.connect(self.handleItemPressed)
    ...

    def handleItemPressed(self, index):
        item = self.ui.comboBox.model().itemFromIndex(index)
        if item.checkState() == QtCore.Qt.Checked:
            item.setCheckState(QtCore.Qt.Unchecked)
        else:
            item.setCheckState(QtCore.Qt.Checked)