PyQt5——QGridLayout和QFormLayout

QGridLayout

QGridLayout（网格布局）是将窗口分割成行和列的网络来进行排列，通常可以使用函数addWidget()将被管理的控件添加到窗口中。或者addLayout函数也可以。

单一的网格单元格

import sys
from PyQt5.QtWidgets import QApplication, QWidget, QGridLayout,QPushButton

class Winform(QWidget):
    def __init__(self,parent = None):
        super(Winform, self).__init__(parent)
        self.initUI()
    def initUI(self):
        grid = QGridLayout()
        self.setLayout(grid)

        names = ['Cls', 'Back', '','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 names == '':
                continue
            button = QPushButton(name)
            grid.addWidget(button, *position)
        self.move(300,150)
        self.setWindowTitle("网格布局管理例子")

if __name__ == '__main__':
    app = QApplication(sys.argv)
    win = Winform()
    win.show()
    sys.exit(app.exec_())

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跨越行和列的网格单元格

import sys
from PyQt5.QtWidgets import QWidget,QLabel,QLineEdit,QTextEdit,QGridLayout,QApplication

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

    def initUI(self):
        title = QLabel("标题")
        author = QLabel("提交人")
        review = QLabel("申告内容")

        titleEdit = QLineEdit()
        authorEdit = QLineEdit()
        reviewEdit = QTextEdit()

        grid = QGridLayout()
        grid.setSpacing(10)
        grid.addWidget(title,1,0)
        grid.addWidget(titleEdit,1,1)

        grid.addWidget(author,2,0)
        grid.addWidget(authorEdit,2,1)

        grid.addWidget(review,3,0)
        # 放置在第3行第1列，跨越5行和1列
        grid.addWidget(reviewEdit,3,1,5,1)
        self.setLayout(grid)
        self.setGeometry(300,300,350,300)
        self.setWindowTitle("故障申告")

if __name__ == '__main__':
    app = QApplication(sys.argv)
    win = Winform()
    win.show()
    sys.exit(app.exec_())

QFormLayout(表单布局)

QFormLayout是label-field式的表单布局，就是实现表单方式的布局。表单是提示用户进行交互的一种模式，主要由两列组成，第一列用于显示信息，第二类需要用户进行选择或输入。

import sys
from PyQt5.QtWidgets import QApplication,QWidget,QFormLayout,QLabel,QLineEdit

class Winform(QWidget):
    def __init__(self):
        super(Winform,self).__init__()
        self.setWindowTitle("表单布局管理例子")
        self.resize(400,100)
        fromlayout= QFormLayout()
        labl1 = QLabel("标签1")
        lineEdit1 = QLineEdit()
        labl2 = QLabel("标签2")
        lineEdit2 = QLineEdit()
        labl3 = QLabel("标签3")
        lineEdit3 = QLineEdit()

        fromlayout.addRow(labl1,lineEdit1)
        fromlayout.addRow(labl2,lineEdit2)
        fromlayout.addRow(labl3,lineEdit3)
        self.setLayout(fromlayout)
        
if __name__ == '__main__':
    app = QApplication(sys.argv)
    win = Winform()
    win.show()
    sys.exit(app.exec_())