pyqt QTreeWidgetItem双击connect

Question

可以将doubleclick事件连接到QTreeWidgetItem吗？

如下所示：

def test(self):
        print("hello")

childItem = QTreeWidgetItem()   
childItem.doubleClicked.connect(self.test)

Answer 1

您需要的信号称为itemDoubleClicked，它属于QTreeWidget本身：

from PyQt4 import QtGui

def handler(item, column_no):
    print(item, column_no)

def main():
    app = QtGui.QApplication(sys.argv)
    win = QtGui.QTreeWidget()

    items = [QtGui.QTreeWidgetItem("item: {}".format(i)) for i in xrange(10)]
    win.insertTopLevelItems(0, items)
    win.itemDoubleClicked.connect(handler)

    win.show()
    sys.exit(app.exec_())

if __name__ == '__main__':
    main()