您可以使用信号映射器发送动作对象本身。但是，最好仅发送一个标识符并在信号处理程序中完成所有工作。
这是一个简单的演示脚本：
from PyQt4 import QtGui, QtCoreclass Window(QtGui.QMainWindow): def __init__(self): QtGui.QMainWindow.__init__(self) self.mapper = QtCore.QSignalMapper(self) self.toolbar = self.addToolBar('Foo') self.toolbar.setToolButtonStyle(QtCore.Qt.ToolButtonTextOnly) for text in 'One Two Three'.split(): action = QtGui.QAction(text, self) self.mapper.setMapping(action, text) action.triggered.connect(self.mapper.map) self.toolbar.addAction(action) self.mapper.mapped['QString'].connect(self.handleButton) self.edit = QtGui.QLineEdit(self) self.setCentralWidget(self.edit) def handleButton(self, identifier): if identifier == 'One': text = 'Do This' elif identifier == 'Two': text = 'Do That' elif identifier == 'Three': text = 'Do Other' self.edit.setText(text)if __name__ == '__main__': import sys app = QtGui.QApplication(sys.argv) window = Window() window.resize(300, 60) window.show() sys.exit(app.exec_())
