【Python】Pyqt5 主窗口调用子窗口demo

柔情只为你懂 2024-03-31 17:35 124阅读 0赞

背景：  
通过主窗口的按钮调用其对应的窗口，代码比较简单，直接看，不懂的欢迎留言；  
一共两个代码：  
ui\_first.py ：实现的是主窗口  
ui\_second.py：实现的是子窗口

点击开始按钮调用子窗口，点击关闭退出窗口；

`ui_first.py`

import sys
    import os
    from PyQt5.QtWidgets import QWidget, QApplication, QPushButton, QHBoxLayout
    from .ui_sencond import UiMainTwo
    from PyQt5.QtCore import Qt
    
    
    class UiMain(QWidget):
        def __init__(self, parent=None):
            super(UiMain, self).__init__(parent)
    
            self.setWindowTitle('main_wsw')
            self.resize(400, 200)
            self.initUI()
    
        def initUI(self):
            layout = QHBoxLayout()
            self.start = QPushButton("开始")
            self.start.clicked.connect(self.action_b)
            layout.addWidget(self.start)
    
            self.end = QPushButton("结束")
            self.end.clicked.connect(self.close)
            layout.addWidget(self.end)
            layout.addStretch()
            self.setLayout(layout)
    
        def action_b(self):
            self.ui_2 = UiMainTwo()
            self.ui_2.show()
    
    
    if __name__ == '__main__':
        app = QApplication(sys.argv)
        main = UiMain()
        main.show()
        sys.exit(app.exec_())

`ui_second.py`

import sys
    import os
    from PyQt5.QtWidgets import QWidget, QApplication, QPushButton, QMenu, \
        QSizePolicy, QVBoxLayout, QHBoxLayout, QLabel
    
    
    class UiMainTwo(QWidget):
        def __init__(self, parent=None):
            super(UiMainTwo, self).__init__(parent)
            self.setWindowTitle('second_wsw')
            self.resize(300, 200)
            self.move(800, 400)
            self.initUI2()
    
        def initUI2(self):
            layout = QVBoxLayout()
            self.label1 = QLabel('label1: hi i am wsw', self)
            layout.addWidget(self.label1)
    
            self.label2 = QLabel('label2: hi all ...', self)
            layout.addWidget(self.label2)
            layout.addStretch()
    
            self.label3 = QLabel('label3: hi all ...', self)
            layout.addWidget(self.label3)
    
            self.setLayout(layout)
    
    
    if __name__ == '__main__':
        app = QApplication(sys.argv)
        main = UiMainTwo()
        sys.exit(app.exec_())

![在这里插入图片描述][3f3d15cec7654c7ab54dabe115cb9312.png]

[3f3d15cec7654c7ab54dabe115cb9312.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/31/779f80d894f843d895612aa1977e31bc.png