From Tracker Software PDF SDK
Registers a new tool-object to extend functionality for end-user in pages area. For example - to provide access to new custom types of annotations or to improve direct editing of content on pages.
HRESULT RegisterTool([in] IPXV_Tool* pTool);
- [in] Pointer to IPXV_Tool object.
Returns S_OK if operation was successful or error code in other cases.