Question

您将在下面的图片中看到我想要这样做，这样用户就可以点击劳拉（这是一个QMenu），它就会发生火灾和事件。就像常规行动一样。

我根据下面的层次结构动态创建子菜单。但是，除了“孩子们”之外，我希望所有子菜单都可以点击。

奇怪的是＆＃39; hover＆＃39;事件触发但不触发事件？为什么会这样？

#!/usr/bin/python
# -*- coding: utf-8 -*-

# Imports
# ------------------------------------------------------------------------------
import sys
from PySide import QtGui, QtCore

# Main Widget
# ------------------------------------------------------------------------------
class ExampleWidget(QtGui.QWidget):

    def __init__(self,):
        super(ExampleWidget, self).__init__()
        self.initUI()

    def initUI(self):
        # formatting
        self.setWindowTitle("Example")

        # context menu
        self.main_menu = QtGui.QMenu()
        self.sub_menu = QtGui.QMenu("Kids")
        self.main_menu.addMenu(self.sub_menu)

        tree = [
            {
                "parent" : "Chris",
                "children" : [
                    {
                        "parent" : "Doug",
                        "children" : []
                    },
                    {
                        "parent" : "Michelle",
                        "children" : [
                            {
                                "parent" : "Susan",
                                "children" : []
                            }
                        ]
                    }
                ]
            },
            {
                "parent" : "Laura",
                "children" : [
                    {
                        "parent" : "Michael",
                        "children" : []
                    }
                ]
            }
        ]

        self.build_sub_menu( self.sub_menu, tree )

        # widgets        
        self.factionsList = QtGui.QListWidget()
        # signal
        self.factionsList.setContextMenuPolicy(QtCore.Qt.CustomContextMenu)
        self.factionsList.customContextMenuRequested.connect(self.on_context_menu_factions)
        # layout
        self.mainLayout = QtGui.QGridLayout(self)
        self.mainLayout.addWidget(self.factionsList, 1, 0)
        self.show()

    def add_menu_item(self, menu, branch):
        parent = branch["parent"]
        sub_menu = QtGui.QMenu(parent)
        item = menu.addMenu(sub_menu)
        item.triggered.connect(self.menu_action)
        item.hovered.connect(self.menu_action)
        print item

        for c in branch["children"]:
            self.add_menu_item( sub_menu, c)

    def build_sub_menu(self, menu, tree):
        for branch in tree:
            self.add_menu_item(menu, branch)

    def menu_action(self):
        print "Event"
        print self.sender().text()

    def on_context_menu_factions(self, pos):
        self.main_menu.exec_( QtGui.QCursor.pos() )

# Main
# ------------------------------------------------------------------------------
if __name__ == "__main__":

    app = QtGui.QApplication(sys.argv)
    ex = ExampleWidget()
    res = app.exec_()
    sys.exit(res)

Answer 1

import threading import time exitFlag = 0 class process (threading.Thread): def __init__(self, processId = None , processName = None , initialTime = None , longTime = None ): threading.Thread.__init__(self) self.processId = processId self.processName = processName self.initialTime = initialTime self.longTime = longTime def run(self): print "Starting " + self.processName print_time(self.processName, self.longTime, 5) print "Exiting " + self.processName def __str__(self): threading.Thread.__str__(self) return ('[' + str(self.initialTime) + ' ' + str(self.longTime) +']') ############################### ####### my problem area ####### ############################### def __cmp__(self, other): if (self.initialTime > other.initialTime): return -1 elif (self.initialTime < other.initialTime): return 1 elif ((self.initialTime == other.initialTime)): if (self.longTime > other.longTime): return -1 elif (self.longTime < other.longTime): return 1 else : return 0 else: return 0 ############################### ####### my problem area ####### ############################### def print_time(threadName, delay, counter): while counter: if exitFlag: threadName.exit() time.sleep(delay) print "%s: %s" % (threadName, time.ctime(time.time())) counter -= 1文档说明QMenu信号：

注意：此信号是针对层次结构中的主父菜单发出的。因此，只需要将父菜单连接到插槽;子菜单无需连接

我想这是因为它是一种UI惯例，点击子菜单什么都不做：它们在悬停时打开，除了打开之外不能做任何事情。您想要的行为是不寻常的，如果您需要triggered信号，我认为需要对QMenu进行子分类。

您可以尝试连接triggered信号。

另一种选择是添加某种“。”对表示父子菜单操作的每个子菜单的操作。

可点击的QMenu触发事件无法正常工作 - python

1 个答案: