How to find URN and GUID of a document?

Question

I tried this: 
 lOk = aaApi_SelectDocument(lngProjectId, lngDocumentID)
 If lOk < 0 Then ' Si 0, il n'y a pas de document dans le buffer
 aaApi_ShowLastErrorMessageBox
 Stop
 Exit Sub
 End If

 lngptrW = aaApi_GetDocumentStringProperty(DOC_PROP_URL_NAME, 0) ' => Return NULL
 strDocumentURL = VBStringFromPtrW(lngptrW)

 lngptrW = aaApi_GetDocumentStringProperty(DOC_PROP_IS_URL, 0) ' => Return NULL
 strDocumentURL = VBStringFromPtrW(lngptrW)

 lngptrW = aaApi_GetDocumentGuidProperty(DOC_PROP_DOCGUID, 0)
 strDocumentGUID = VBStringFromPtrW(lngptrW) ' => Return "00000000000000"

 lngptrW = aaApi_GetDocumentGuidProperty(DOC_PROP_ORIGGUID, 0)
 strDocumentGUID = VBStringFromPtrW(lngptrW) ' => Return an empty string

 lngptrW = aaApi_GetDocumentGuidProperty(DOC_PROP_LOCATIONID, 0)
 strDocumentGUID = VBStringFromPtrW(lngptrW) ' => Return an empty string

Dan Williams · Answer

Didier POUZET , 
 
 What you see in the Address Bar: pw:\decide-pwce-us.bentley.com:decide-pwce-us-10\Documents\dww\Test Folder 01\TestTextFile 01 
 URL pw://decide-pwce-us.bentley.com:decide-pwce-us-10/Documents/dww/Test&space;Folder&space;01/TestTextFile&space;01 
 URN pw://decide-pwce-us.bentley.com:decide-pwce-us-10/Documents/D{2f6919f8-27bf-4254-b81e-bebdd4e77609} 
 
 GUID - Global Unique ID - Think of it as a primary key for a document that does not change when you move a document to a different folder in the datasource. ProjectID and DocumentID (may have different labels depending upon context), are unique within a folder for a document, but will change if the document is moved to a different folder. 
 URL - Check the PW documentation for PW Explorer, but basically it is a link containing text based information which will fail if the document is moved, but is easier for a human to interpret. 
 URN - Check the PW documentation for PW Explorer, but basically is is a link containing a GUID which will work if the document is moved, which makes it more useful for using as an actual link.

How to find URN and GUID of a document?

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