PyQt 如何从布局中删除布局 [英] PyQt How to remove a layout from a layout

问题描述

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


pagedatainputdeletboxbutton1.clicked.connect(lambda:self.boxdelete(datainputHbox))

def boxdelete(self, box):

这是 PyQt 程序如何编写 boxdelete 函数以删除 datainputHbox 表单布局.我尝试了很多.但是我只能删除所有小部件但不能删除布局.

This is the PyQt proragm How write boxdelete funtion in order to remove datainputHbox form layout. I try a lot of. However I just can remove all the widgets but cannot remove layout.

推荐答案

作为通用答案:取自这里 有轻微但重要的变化:你不应该调用widget.deleteLater().至少在我的情况下，这导致 python 崩溃

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

全局函数

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())

连同来自 Brendan Abel 的答案 的 boxdelete 函数

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

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