zetcode :: First programs in PyQt5

练习代码，详见网站 http://zetcode.com/gui/pyqt5/firstprograms/

import sys from PyQt5 import QtWidgets from PyQt5 import QtGui from PyQt5 import QtCore class TooltipExample(QtWidgets.QWidget):     def __init__(self):         super().__init__()         self.initUI()     def initUI(self):         # 静态方法，设置Tooltip字体         QtWidgets.QToolTip.setFont(QtGui.QFont("SansSerif", 15))         self.setToolTip("This is a <b>QWidget</b> widget")         # tooltip持续1000毫秒         self.setToolTipDuration(1000)         btn = QtWidgets.QPushButton('Quit', self)         # QCoreApplication.instance 返回当前实例         btn.clicked.connect(QtCore.QCoreApplication.instance().quit)         btn.resize(btn.sizeHint())         btn.move(50, 50)         btn.setToolTip("This is a <b>QPushButton</b> widget")         btn.setToolTipDuration(1000)         # x,y,width,height         #self.setGeometry(300, 300, 300, 150)         self.resize(300,150)         self.center()         self.setWindowTitle("Tooltips")     def center(self):         wr = self.frameGeometry()         # QDesktopWidget::availableGeometry 返回屏幕rect         qr = QtWidgets.QDesktopWidget().availableGeometry().center()         # QRect：moveCenter 中心对齐         wr.moveCenter(qr)         # 实际调节窗口位置         self.move(wr.topLeft())     def closeEvent(self, event):         # 静态方法生成MessageBox，返回StandardButton         reply = QtWidgets.QMessageBox.question(self, 'Message', 'Are you sure to quit ?',                                                QtWidgets.QMessageBox.Yes | QtWidgets.QMessageBox.No,                                                QtWidgets.QMessageBox.No)         if reply == QtWidgets.QMessageBox.Yes:             event.accept()         else:             event.ignore() if __name__ == '__main__':     app = QtWidgets.QApplication(sys.argv)     example = TooltipExample()     example.show()     sys.exit(app.exec_())

 

 

转载于:https://www.cnblogs.com/lkpp/p/7400034.html

相关资源：PyQt5 Tutorial（中文版）