m_pTBtn_Data_Frame_Info = new QToolButton(); connect(m_pTBtn_Data_Frame_Info, &QToolButton::clicked, this, &BusyParam::slot_onToolButtonClicked_Data_Frame_Info); //m_pTBtn_Data_Frame_Info->setText("数据帧信息"); m_pTBtn_Data_Frame

根据你提供的代码，m_pTBtn_Data_Frame_Info设置了setPopupMode(QToolButton::MenuButtonPopup)来指定菜单弹出模式为点击按钮弹出菜单。如果点击按钮不能弹出菜单，可能有以下几个原因：

没有为该工具按钮添加菜单项。请确保在代码中使用QMenu对象创建一个菜单，并使用addAction()将其添加到工具按钮上。

例如：

   QMenu* menu = new QMenu(this);
   // 添加菜单项
   QAction* action1 = menu->addAction("菜单项1");
   QAction* action2 = menu->addAction("菜单项2");
   
   m_pTBtn_Data_Frame_Info->setMenu(menu);  // 将菜单关联到工具按钮

检查槽函数 slot_onToolButtonClicked_Data_Frame_Info() 是否正确连接到了 QToolButton::clicked 信号。确保槽函数的实现与预期行为一致。

如果以上两个步骤都没有问题，请进一步检查其他可能导致问题的因素，比如样式表、父控件布局等。

内容由零声教学AI助手提供，问题来源于学员提问

m_pTBtn_Data_Frame_Info = new QToolButton(); connect(m_pTBtn_Data_Frame_Info, &QToolButton::clicked, this, &BusyParam::slot_onToolButtonClicked_Data_Frame_Info); //m_pTBtn_Data_Frame_Info->setText("数据帧信息"); m_pTBtn_Data_Frame_Info->set...

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m_pTBtn_Data_Frame_Info = new QToolButton(); connect(m_pTBtn_Data_Frame_Info, &QToolButton::clicked, this, &BusyParam::slot_onToolButtonClicked_Data_Frame_Info); //m_pTBtn_Data_Frame_Info->setText("数据帧信息"); m_pTBtn_Data_Frame_Info->set...

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