Question

i am currently designing a QT-gui in Python and i want to allow the user to switch QListWidgetItems between two QListWidgets. Multiple selection (CTRL) is allowed and switching is done by two control buttons.

In the QT4-Designer the lists looks like this

So if the user selects for example two items from the left list and clicks on the ‘>’ Button the items have to be added to the right list and consequently deleted from the left list.

My current triggered Button-Events look like this:

def switchR( self ):
    itemlistSel = self.list_left.selectedItems()
    for item in itemlistSel:
        self.list_right.addItem( item )
        self.list_left.removeItemWidget( item )

But nothing happens? Someone got a quick solution?

Answer 1

The removeItemWidget() method doesn’t quite do what you’re expecting it to do (see docs). Use takeItem(), addItem() and row() instead:

def switch(self):
    items = self.left.selectedItems()
    for item in items:
        n = self.left.row(item)    # get the index/row of the item
        i = self.left.takeItem(n)  # pop
        self.right.addItem(i)      # add to right QListWidget