如何在pyqt4上对齐QHBoxLayout和QVBoxLayout的布局?

时间:2017-05-28 18:51:29

标签: python qt pyqt4

我想为我的窗口做这个布局:

enter image description here

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()

但它不接受另一种布局:

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

如何进行此对齐?

更新

通过@ G.M.评论,使用addLayout()我在控制台上收到了此警告:

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

但是现在窗口显示时没有编辑框:

enter image description here

enter image description here

1 个答案:

答案 0 :(得分:1)

您在更新中显示的问题是生成的,因为您必须将自己作为父级,并将其置于该小部件中,一个简单的解决方案将更改为:

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_() )

enter image description here

另一个问题是你谈论按钮,此外图表显示了几乎方形尺寸的小部件,我想如果你想得到它,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()

enter image description here