The ID of the source of a chunk. The value of the idChunkSource member depends on the nature of the chunk: If the chunk is a text-type property, the value of the idChunkSource member must be the same as the value of the idChunk member. If the chunk is an public value-type property derived from textual content, the value of the idChunkSource member is the chunk ID for the text-type chunk from which it is derived. If the filter attributes specify to return only public value-type properties, there is no content chunk from which to derive the current public value-type property. In this case, the value of the idChunkSource member must be set to zero, which is an invalid chunk.

public int idChunkSource

Public idChunkSource As Integer

public:
int idChunkSource