如何对齐布局 QHBoxLayout 和 QVBoxLayout？

Question

我想为我的窗口做这个布局：

所以我尝试创建一个QHBoxLayout 布局来放置3 个按钮，并将其添加到QVBoxLayout：

#!/usr/bin/python
# -*- coding: utf-8 -*-

import sys
from PyQt4 import QtGui

class Example(QtGui.QWidget):

    def __init__(self):
        super(Example, self).__init__()
        self.initUI()

    def initUI(self):

        title = QtGui.QLabel( 'Title' )
        author = QtGui.QLabel( 'Author' )
        other = QtGui.QLabel( 'Other' )

        titleEdit = QtGui.QLineEdit()

        horizontalLayout = QtGui.QHBoxLayout( self )
        horizontalLayout.addWidget( title )
        horizontalLayout.addWidget( author )
        horizontalLayout.addWidget( other )

        verticalLayout = QtGui.QVBoxLayout( self )
        verticalLayout.addWidget( titleEdit )
        verticalLayout.addWidget( horizontalLayout )

        self.setLayout( verticalLayout )

        self.setGeometry( 300, 300, 350, 300 )
        self.setWindowTitle( 'Review' )
        self.show()

def main():

    app = QtGui.QApplication( sys.argv )
    ex = Example()
    sys.exit( app.exec_() )


if __name__ == '__main__':
    main()

但它不接受其他布局：

verticalLayout.addWidget( horizontalLayout )
TypeError: addWidget(self, QWidget, stretch: int = 0, alignment: Qt.Alignment = 0): argument 1 has unexpected type 'QHBoxLayout'

这个对齐怎么做？

---

更新

@G.M. 评论，使用addLayout() 我在控制台上收到了这个警告：

QLayout: Attempting to add QLayout "" to Example "", which already has a layout
QLayout::addChildLayout: layout "" already has a parent
QWidget::setLayout: Attempting to set QLayout "" on Example "", which already has a layout

但是现在显示的窗口没有编辑框：

Answer 1

您在更新中显示的问题是因为您必须将自己作为您的父母而生成的，并且将其放置在该小部件中，一个简单的解决方案是更改为：

horizontalLayout = QtGui.QHBoxLayout()

完整代码：

class Example(QtGui.QWidget):
    def __init__(self):
        super(Example, self).__init__()
        self.initUI()

    def initUI(self)
        title = QtGui.QLabel( 'Title' )
        author = QtGui.QLabel( 'Author' )
        other = QtGui.QLabel( 'Other' )

        titleEdit = QtGui.QLineEdit()

        horizontalLayout = QtGui.QHBoxLayout()
        horizontalLayout.addWidget( title )
        horizontalLayout.addWidget( author )
        horizontalLayout.addWidget( other )

        verticalLayout = QtGui.QVBoxLayout( self )
        verticalLayout.addLayout( horizontalLayout )

        verticalLayout.addWidget( titleEdit )


        self.setLayout( verticalLayout )

        self.setGeometry( 300, 300, 350, 300 )
        self.setWindowTitle( 'Review' )
        self.show()

def main():

    app = QtGui.QApplication( sys.argv )
    ex = Example()
    sys.exit( app.exec_() )

另一个问题是你谈到按钮，除了图表显示了一个几乎是方形的小部件，我认为如果你想得到它，你应该使用QTextEdit。

完整代码：

#!/usr/bin/python

class Example(QtGui.QWidget):

    def __init__(self):
        super(Example, self).__init__()
        self.initUI()

    def initUI(self):

        title = QtGui.QPushButton( 'Title' )
        author = QtGui.QPushButton( 'Author' )
        other = QtGui.QPushButton( 'Other' )

        titleEdit = QtGui.QTextEdit()

        horizontalLayout = QtGui.QHBoxLayout()
        horizontalLayout.addWidget( title )
        horizontalLayout.addWidget( author )
        horizontalLayout.addWidget( other )

        verticalLayout = QtGui.QVBoxLayout( self )
        verticalLayout.addLayout( horizontalLayout )

        verticalLayout.addWidget( titleEdit )


        self.setLayout( verticalLayout )

        self.setGeometry( 300, 300, 350, 300 )
        self.setWindowTitle( 'Review' )
        self.show()

def main():

    app = QtGui.QApplication( sys.argv )
    ex = Example()
    sys.exit( app.exec_() )


if __name__ == '__main__':
    main()