Qt 多级menu

实现如上的一个多级menu， Qt 中实现非常简单。 首先明确一个概念， QMenu表示“容器”， QAction表示具体的项。 所有上图中”其他”，“发票”等都要是QMenu， 而代充类型、有发票都要是QAction， 所以代码实现就非常简单了。
1. 构造
1 pMenu_  =   new  QMenu(tbaTableView_); 
2 pBatchEditMenu_  =   new  QMenu(pMenu_);  
3 pBatchEditOtherMenu_  =   new  QMenu(pBatchEditMenu_);
 4 batchOtherBillMenu_  =   new  QMenu(pBatchEditMenu_);  
5 batchOtherWarrantyMenu_  =   new  QMenu(pBatchEditMenu_);  
6 batchOtherAutoSendMenu_  =   new  QMenu(pBatchEditMenu_);  
7 batchOtherRecommendMenu_  =   new  QMenu(pBatchEditMenu_);
8 batchOtherDiscountMenu_  =   new  QMenu(pBatchEditMenu_);
2.析构
1  delete batchOtherBillMenu_;  
2  delete batchOtherWarrantyMenu_;  
3  delete batchOtherAutoSendMenu_;  
4  delete batchOtherRecommendMenu_;  
5  delete batchOtherDiscountMenu_;  
6  delete pBatchEditOtherMenu_;  
7  delete pBatchEditMenu_;  
8  delete addItemsTimer_;  
9  delete pMenu_;
注意顺序。
3. 代码实现
1  pBatchEditOtherMenu_ -> setTitle(tr( " 其他(Q) " ));  
2  batchOtherBillMenu_ -> setTitle(tr( " 发票 " ));  
3  batchOtherBillMenu_ -> addAction(tr( " 有发票 " ), this ,SLOT(haveBillBatchEdit()));  
4  batchOtherBillMenu_ -> addAction(tr( " 无发票 " ), this ,SLOT(noBatchEdit()));  
5  batchOtherRecommendMenu_ -> setTitle(tr( " 橱窗推荐 " ));  
6  batchOtherDiscountMenu_ -> setTitle(tr( " 会员打折 " ));  
7  pBatchEditMenu_ -> addMenu(pBatchEditOtherMenu_);  
8  pBatchEditOtherMenu_ -> addMenu(batchOtherBillMenu_);
4. 快捷键以及分割线
1 QAction *  openDetailPage  =  pMenu_ -> addAction(tr( " 打开宝贝页面 " ));  
2  openDetailPage -> setShortcut(QKeySequence(tr( " Ctrl+B " )));  
3  pMenu_ -> addSeparator();