PyQt How to remove a layout from a layout

Question

datainputHbox = QHBoxLayout()
layout = QVBoxLayout(self)
layout.addLayout(datainputHbox)


pagedatainputdeletboxbutton1.clicked.connect(lambda:self.boxdelete(datainp         


        

Answer 1

You can remove QLayouts by getting their corresponding QLayoutItem and removing it. You should also be storing references to your Layouts, otherwise there is no other way to access them later on unless you know the widget they belong to.

datainputHbox = QHBoxLayout()
self.vlayout = QVBoxLayout(self)
layout.addLayout(datainputHbox)
pagedatainputdeletboxbutton1.clicked.connect(lambda: self.boxdelete(datainputHbox))

def boxdelete(self, box):
    for i in range(self.vlayout.count()):
        layout_item = self.vlayout.itemAt(i)
        if layout_item.layout() == box:
            self.vlayout.removeItem(layout_item)
            return

Answer 2

As a generic answer: taken from here with slight, but important changes: you should not call widget.deleteLater(). At least in my case this caused python to crash

Global Function

def deleteItemsOfLayout(layout):
     if layout is not None:
         while layout.count():
             item = layout.takeAt(0)
             widget = item.widget()
             if widget is not None:
                 widget.setParent(None)
             else:
                 deleteItemsOfLayout(item.layout())

together with the boxdelete function from Brendan Abel's answer

def boxdelete(self, box):
    for i in range(self.vlayout.count()):
        layout_item = self.vlayout.itemAt(i)
        if layout_item.layout() == box:
            deleteItemsOfLayout(layout_item.layout())
            self.vlayout.removeItem(layout_item)
            break