PyQt5笔记（02） -- 按钮点击事件

雨点打透心脏的1/2处 2022-06-03 08:06 367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 ####

本节主要介绍在一个PyQt窗体内添加一个按钮，鼠标停留在按钮上会出现提示，并在点击按钮时响应一个事件

import sys
    from PyQt5.QtWidgets import QApplication, QWidget, QPushButton
    from PyQt5.QtGui import QIcon
    from PyQt5.QtCore import pyqtSlot
    
    class App(QWidget):
        def __init__(self):
            super().__init__()
            self.title = "PyQt5 button"
            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)
            """在窗体内创建button对象"""
            button = QPushButton("PyQt5 Button", self)
            """方法setToolTip在用户将鼠标停留在按钮上时显示的消息"""
            button.setToolTip("This is an example button")
            """按钮坐标x = 100, y = 70"""
            button.move(100, 70)
            """按钮与鼠标点击事件相关联"""
            button.clicked.connect(self.on_click)
            
            self.show()
        """创建鼠标点击事件"""
        @pyqtSlot()
        def on_click(self):
            print("PyQt5 button click")
    
    if __name__ == '__main__':
        app = QApplication(sys.argv)
        ex = App()
        sys.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