How to create a combobox of checkboxes ?

[A Former User]

So, it means that there is no solution other than using a list widget which can be open when you select multiple elements ?

[mrjj]

@EJWA
well you can hax it if you really feel like it

from PyQt4 import QtCore, QtGui    
app = QtGui.QApplication([])

class Combo(QtGui.QComboBox):
    def __init__(self, *args, **kwargs):
        super(Combo, self).__init__()
        self.addItems(['Item_1','Item_2','Item_3','Item_4','Item_5'])
        self.show()

    def hidePopup (self):
        pass

inst=Combo()
sys.exit(app.exec_())

https://stackoverflow.com/questions/25733891/how-to-cause-qcombobox-pull-down-menu-to-stay-open

[A Former User]

Thanks very much. What about the tool button ? It is a good idea ?

 self.toolbutton = QtGui.QToolButton(self)
        self.toolbutton.setText('Select Categories ')
        self.toolmenu = QtGui.QMenu(self)
        for i in range(3):
            action = self.toolmenu.addAction("Category " + str(i))
            action.setCheckable(True)
        self.toolbutton.setMenu(self.toolmenu)
        self.toolbutton.setPopupMode(QtGui.QToolButton.InstantPopup)

[mrjj]

@EJWA

You mean to use toolbutton to popup menu ?
or toolbutton inside combo box ?

Using a popup menu might suffer from same issue to close when one is selected/checked.

[A Former User]

the same functions as using a combobox with checkboxes

[mrjj]

@EJWA

Both ways can work even if not usual function.

Also if its rare user need to select multiple Categories its maybe ok.

[A Former User]

Can I keep the toolbutton menu open when selecting multiple categories ?

[mrjj]

@EJWA

well yes but its more haxy than combo box
https://stackoverflow.com/questions/2050462/prevent-a-qmenu-from-closing-when-one-of-its-qaction-is-triggered/11571550#11571550
you might need to use event filter

Why dont u just use a dialog ?
Click button.
Dialog opens with ListView,
use checks one or more Categories.
User press ok to close.

[A Former User]

Hello, it seems that this code doesn't work because I design the interface with QT creator, so I must generate the py file from the ui using the pyuic4 and then modify the py file. I am trying now this example and I

class CheckableComboBox(QtGui.QComboBox):
    def __init__(self):
        super(CheckableComboBox, self).__init__()
        self.view().pressed.connect(self.handleItemPressed)
        self.setModel(QtGui.QStandardItemModel(self))

    def handleItemPressed(self, index):
        item = self.model().itemFromIndex(index)
        if item.checkState() == QtCore.Qt.Checked:
            item.setCheckState(QtCore.Qt.Unchecked)
        else:
            item.setCheckState(QtCore.Qt.Checked)
self.imploc_extension = CheckableComboBox()
      
        for i in range(4):
            self.imploc_extension.addItem("csv")
            self.imploc_extension.addItem("xls")
            self.imploc_extension.addItem("mtx")
            self.imploc_extension.addItem("txt")
            item = self.imploc_extension.model().item(i, 0)
            item.setCheckState(QtCore.Qt.Unchecked)

[jsulm]

@EJWA Modifying generated code isn't a good idea as your modifications will be lost next time the code is generated...

[A Former User]

Finally,

I will use listwidget, it us easier. Thank you for all your help.