Question

运行此代码会创建一个带有标签，lineedit和两个按钮的简单对话框。所有小部件都可以很好地响应对话框水平调整大小。但是，当垂直调整对话框窗口时，对话框底部的按钮不会粘到对话框窗口的下边缘。什么是可能的解决方案，以确保按钮始终位于对话框的底部边缘？

from PyQt4 import QtCore, QtGui
app = QtGui.QApplication(sys.argv)



class mainWindow(QtGui.QMainWindow):

    def __init__(self):
        super(mainWindow, self).__init__()

        mainQWidget = QtGui.QWidget()
        mainLayout=QtGui.QFormLayout()
        mainLayout.setFieldGrowthPolicy(QtGui.QFormLayout.AllNonFixedFieldsGrow)

        label = QtGui.QLabel('My Label')  
        lineEdit = QtGui.QLineEdit()
        mainLayout.addRow(label, lineEdit)

        ButtonBox = QtGui.QGroupBox()
        ButtonsLayout = QtGui.QHBoxLayout()

        Button_01 = QtGui.QPushButton("Close")
        Button_02 = QtGui.QPushButton("Execute")

        ButtonsLayout.addWidget(Button_01)
        ButtonsLayout.addWidget(Button_02)

        ButtonBox.setLayout(ButtonsLayout)
        mainLayout.addRow(ButtonBox)

        mainQWidget.setLayout(mainLayout)
        self.setCentralWidget(mainQWidget)


if __name__ == '__main__':
    window = mainWindow()
    window.show()
    window.raise_() 
    window.resize(480,320)
    app.exec_()

Answer 1

我建议使用QVBoxLayout作为主要布局，在QFormLayout和按钮的QHBoxLayout之间延伸。

作为基于当前对话框的示例：

import sys
from PyQt4 import QtGui


class MainWindow(QtGui.QMainWindow):

    def __init__(self):
        super(MainWindow, self).__init__()

        label = QtGui.QLabel('My Label')
        line_edit = QtGui.QLineEdit()

        form_layout = QtGui.QFormLayout()
        form_layout.addRow(label, line_edit)

        close_button = QtGui.QPushButton('Close')
        execute_button = QtGui.QPushButton('Execute')

        button_layout = QtGui.QHBoxLayout()
        button_layout.addWidget(close_button)
        button_layout.addWidget(execute_button)

        main_layout = QtGui.QVBoxLayout()
        main_layout.addLayout(form_layout)
        main_layout.addStretch()
        main_layout.addLayout(button_layout)

        central_widget = QtGui.QWidget()
        central_widget.setLayout(main_layout)
        self.setCentralWidget(central_widget)


if __name__ == '__main__':
    app = QtGui.QApplication(sys.argv)
    window = MainWindow()
    window.resize(480, 320)
    window.show()
    sys.exit(app.exec_())

PyQt：如何将小部件粘贴到对话框的底部边缘

1 个答案: