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Build docker image from multiple build contexts

Build docker image from multiple build contexts Building a docker image requires specifying a source of truth to include in the image from a local directory or a remote git repository. In the previous version, the docker BuildKit allows users to specify the build context from a single source of truth only. However, the engineers may need to have the context from different locations based on the type of files. For instance, icons, images or other resources that are not included in the same package, including the resource from other docker images. Fortunately, the Docker Buildx toolkit supports multiple build context flag for Docker 1.4. Let's learn how to use this new feature. The following list is a shortcut for jumping into a specific topic handy. What version of Docker is this tutorial targeting? How to specify the version of Dockerfile frontend? Ho
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[TreeList]CTreeCtrl更新選定之Root項目的分支

在取得到目前所要更新的Root Item後，先呼叫CTreeCtrl::GetChildItem()取得到第一個Leaf的HTREEITEM。
之後僅需使用CTreeCtrl::GetNextSiblingItem()來取得下一個相鄰的Leaf。

程式碼如下：
 HTREEITEM hCurSelItem = this->m_TreeCtrl.GetSelectedItem();  
   
 //Update to UI  
 HTREEITEM hLeafItem = NULL;  
   
 hLeafItem = this->m_treRolesSetting.GetChildItem(hCurSelItem);  
 this->m_treRolesSetting.SetItemText(hLeafItem, "1st Leaf");  
   
 hLeafItem = this->m_treRolesSetting.GetNextSiblingItem(hLeafItem);  
 this->m_treRolesSetting.SetItemText(hLeafItem, "2nd Leaf");
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