Developing Hierarchical Browsing using Collector Toolkit

The following callback is used to develop hierarchical browsing using the Collector Toolkit:

ihCollectorToolkitGetTagsHierarchical(wchar_t* BrowsePosition, wchar_t* NodeFilter, 
ihTKHierarchicalBrowseResponse* Response);

The following are the parameters in this callback:

Name	Description
`BrowsePosition`	The place where the current node is selected.
`NodeFilter`	The delimiter using which hierarchical node differentiation is made
Response structure	Contains the number of nodes/leaves for a particular node.

To define the hierarchical tree format as illustrated in the Add Multiple Tags from Collector figure above, Historian provides the following information in three responses, provided as a sample here. Use the information in the following three responses to browse the tags and add the required tags.

As a first response Historian returns:

ihInterfaceGetTagsHierarchical()

The following are the parameter values:

BrowsePosition "ihHierarchicalBrOwSeRoOt" 
NodeFilter: "" (By default, this uses a “/”) 
Response = NULL
NodeCount 1 int
NodeNames "_Status" wchar_t *
FullNodeNames "/_Status" wchar_t *
ihInterfaceGetTags()
BrowsePosition “ihHierarchicalBrOwSeRoOt” wchar_t*

Second response:

ihInterfaceGetTagsHierarchical() 
BrowsePosition "/_Status" 
NodeNames "DA_Server"
FullNodeNames "/_Status/DA_Server" 
ihInterfaceGetTags()
BrowsePosition “/_Status”

Third response:

ihInterfaceGetTagsHierarchical() 
BrowsePosition "/_Status/DA_Server" 
BrowsePosition "/_Status/DA_Server"