栅格布局_PyQt5中文教程

栅格布局是最为常用的布局方式。这种布局是把窗口分为行和列。创建和使用栅格布局，需要使用QGridLayout模块。

#!/usr/bin/python3
# -*- coding: utf-8 -*-
"""
ZetCode PyQt5 tutorial 
In this example, we create a skeleton
of a calculator using a QGridLayout.
author: Jan Bodnar
website: zetcode.com 
last edited: January 2015
"""
import sys
from PyQt5.QtWidgets import (QWidget, QGridLayout, 
    QPushButton, QApplication)
class Example(QWidget):
    def __init__(self):
        super().__init__()
        self.initUI()
    def initUI(self):
        grid = QGridLayout()
        self.setLayout(grid)
        names = ['Cls', 'Bck', '', 'Close',
                 '7', '8', '9', '/',
                '4', '5', '6', '*',
                 '1', '2', '3', '-',
                '0', '.', '=', '+']
        positions = [(i,j) for i in range(5) for j in range(4)]
        for position, name in zip(positions, names):
            if name == '':
                continue
            button = QPushButton(name)
            grid.addWidget(button, *position)
        self.move(300, 150)
        self.setWindowTitle('Calculator')
        self.show()
if __name__ == '__main__':
    app = QApplication(sys.argv)
    ex = Example()
    sys.exit(app.exec_())

这个例子里，我们创建了栅格化的按钮。

grid = QGridLayout()
self.setLayout(grid)

创建一个QGridLayout实例，并把它放到程序窗口里。

names = ['Cls', 'Bck', '', 'Close',
        '7', '8', '9', '/',
        '4', '5', '6', '*',
        '1', '2', '3', '-',
        '0', '.', '=', '+']

这是我们将要使用的按钮的名称。

positions = [(i,j) for i in range(5) for j in range(4)]

创建按钮位置列表。

for position, name in zip(positions, names):
    if name == '':
        continue
    button = QPushButton(name)
    grid.addWidget(button, *position)

创建按钮，并使用addWidget()方法把按钮放到布局里面。