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'''表格布局''' from PyQt5.QtWidgets import QApplication,QWidget,QPushButton,QGridLayout,QLabel,QLineEdi from PyQt5.QtCore import Qt,QCoreApplication import sys class Example(QWidget): def __init__(self): super().__init__() self.initUI() def initUI(self): # 创建一个表格布局 grid = QGridLayout() self.setLayout(grid) # 创建计算器的显示器 self.screen = QLineEdit() # 设置显示器为只读模式 self.screen.setReadOnly(True) # 设置右对齐 self.screen.setAlignment(Qt.AlignRight) grid.addWidget(self.screen,0,1,1,4) # 创建所有按钮的标签 labels = ['(*^▽^*)','CE','C','Close', '7','8','9','/', '4','5','6','*', '1','2','3','-', # 创建按钮的位置参数 positions = [(x,y) for x in range(1,6) for y in range(1,5)] # 创建按钮并添加到表格中 for label,position in zip(labels,positions): btn = QPushButton(label) btn.clicked.connect(self.function) grid.addWidget(btn,*position) self.move(500,500) self.setWindowTitle('计算器') self.show() def function(self): # 获取对按键的内容 text = self.sender().text() # 判断被按下的按钮，然后执行相应的操作 if text == '(*^▽^*)': self.backspace() elif text == 'C' or text =='CE': self.clear() elif text == 'Close': self.close() elif text == '=': self.calculate() else: self.write(text) def backspace(self): '''退格''' # 获取文本框内容 content = self.screen.text() # 向文本框写入内容 self.screen.setText(content[:-1]) def calculate(self): '''计算结果''' content = self.screen.text() result = eval(content) self.screen.setText(str(result)) def clear(self): '''清除''' self.screen.setText('') def close(self): '''关闭计算器''' QCoreApplication.quit() def write(self,text): '''向显示器输入内容''' content = self.screen.text() if len(content) == 0: content = text elif text in '+-*/' and content[-1] in '+-/*': content = content[:-1] + text else: content = content + text self.screen.setText(content) if __name__ == '__main__': app = QApplication(sys.argv) ex = Example() sys.exit(app.exec_()) from PyQt5.QtWidgets import QApplication,QWidget,QLabel,QLineEdit,QTextEdit,QGridLayout import sys class Example(QWidget): def __init__(self): super().__init__() self.initUI() def initUI(self): grid = QGridLayout() self.setLayout(grid) title = QLabel('标题：') author = QLabel('作者：') content = QLabel('正文：') title_edit = QLineEdit() author_edit = QLineEdit() content_edit = QTextEdit() grid.addWidget(title,1,1) grid.addWidget(title_edit,1,2) grid.addWidget(author,2,1) grid.addWidget(author_edit,2,2) grid.addWidget(content,3,1) grid.addWidget(content_edit,3,2) self.setGeometry(300,300,300,300) self.setWindowTitle('文本编辑器') self.show() if __name__ == '__main__': app = QApplication(sys.argv) ex = Example() sys.exit(app.exec_()) from PyQt5.QtWidgets import QApplication,QMainWindow import sys,time class Example(QMainWindow): def __init__(self): super().__init__() self.initUI() def initUI(self): # 创建状态栏 status = self.statusBar() # 在状态栏显示信息 status.showMessage("准备好了!") # time.sleep(2) # status.showMessage("可以开始了！") self.setGeometry(300,300,300,300) self.setWindowTitle("状态栏") self.show() if __name__ == "__main__": app = QApplication(sys.argv) ex = Example() sys.exit(app.exec_()) from PyQt5.QtWidgets import QApplication,QMainWindow,qApp,QAction from PyQt5.QtGui import QIcon import sys class Example(QMainWindow): def __init__(self): super().__init__() self.initUI() def initUI(self): # 创建一个菜单条目 exitAction = QAction(QIcon('python\day09\exit3.png'),'退出',self) # 添加快捷键 exitAction.setShortcut('ctrl+q') # 添加一个提示 exitAction.setStatusTip('退出程序') # 给菜单条目添加动作 exitAction.triggered.connect(qApp.quit) # 创建一个菜单栏 menuBar = self.menuBar() # 添加一个File菜单 fileMenu = menuBar.addMenu('File') # 添加菜单条目 fileMenu.addAction(exitAction) self.setGeometry(300,300,300,300) self.setWindowTitle('程序菜单') self.show() if __name__ == '__main__': app = QApplication(sys.argv) ex = Example() sys.exit(app.exec_()) from PyQt5.QtWidgets import QApplication,QMainWindow,qApp,QAction from PyQt5.QtGui import QIcon import sys class Example(QMainWindow): def __init__(self): super().__init__() self.initUI() def initUI(self): exitAction = QAction(QIcon('python\day09\exit3.png'),'退出',self) exitAction.setShortcut('ctrl+q') exitAction.triggered.connect(qApp.quit)
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