PyQt5笔记（04） -- 文本框的使用

妖狐艹你老母 2022-06-03 08:25 440阅读 0赞

#### 目录 ####

[PyQt5笔记（01） – 创建空白窗体][PyQt5_01_ _]  
[PyQt5笔记（02） – 按钮点击事件][PyQt5_02_ _]  
[PyQt5笔记（03） – 消息框][PyQt5_03_ _]  
[PyQt5笔记（04） – 文本框的使用][PyQt5_04_ _]  
[PyQt5笔记（05） – 绝对位置][PyQt5_05_ _]  
为了便于后期更新，所有目录已汇总到一个链接，具体请移步到[这里][Link 1]

#### 正文 ####

本文主要介绍PyQt5中文本框的使用。其中，使用`textbox.setText(string)` 方法设置文本框内容，使用`textbox.text()` 获取文本框里面的内容。

import sys
    from PyQt5.QtWidgets import QApplication, QWidget, QPushButton, QAction, QMessageBox
    from PyQt5.QtGui import QIcon
    from PyQt5.QtCore import pyqtSlot
    from PyQt5.Qt import QLineEdit
    
    class App(QWidget):
        
        def __init__(self):
            super().__init__()
            self.title = 'PyQt5 textbox'
            self.left = 10
            self.top = 10
            self.width = 320
            self.height = 200
            self.initUI()
        
        def initUI(self):
            self.setWindowTitle(self.title)
            self.setGeometry(self.left, self.top, self.width, self.height)
            
            # create textbox
            self.textbox = QLineEdit(self)
            self.textbox.move(20, 20)
            self.textbox.resize(280, 40)
            
            # Create a button in the window
            self.button = QPushButton('show text', self)
            self.button.move(20, 80)
            
            # connect button to function on_click
            self.button.clicked.connect(self.on_click)
            self.show()
             
        @pyqtSlot()
        def on_click(self):
            textboxValue = self.textbox.text()
            QMessageBox.question(self, "Message", 'You typed:' + textboxValue, 
                                 QMessageBox.Ok, QMessageBox.Ok)
            """打印完毕之后清空文本框"""
            self.textbox.setText('')
    
    if __name__ == '__main__':
        app = QApplication(sys.argv)
        ex = App()
        app.exit(app.exec_())

[PyQt5_01_ _]: https://blog.csdn.net/u014786187/article/details/78873852
[PyQt5_02_ _]: https://blog.csdn.net/u014786187/article/details/78876263
[PyQt5_03_ _]: https://blog.csdn.net/u014786187/article/details/78876696
[PyQt5_04_ _]: https://blog.csdn.net/u014786187/article/details/78880005
[PyQt5_05_ _]: https://blog.csdn.net/u014786187/article/details/78880297
[Link 1]: https://blog.csdn.net/u014786187/article/details/104028356