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();