of_retrieve

pfcmain.pbl   >   pfc_u_tvs   >   of_retrieve

Name	Datatype
li_nextlevel	Integer

public function long of_retrieve (long al_parent, any aa_args[20], ref n_ds ads_data);//////////////////////////////////////////////////////////////////////////////
//
//	Event:		of_Retrieve
//
//	Arguments:	
//	al_parent	The handle to the Treeview item to place retrieved data under
//	aa_args		retrieval arguments to pass to the datastore if needed
//	ads_data		The datastore holding the rows to add to the treeview as items 
//						passed by reference
//
//	Returns:		long
//			 number of items returned by the retrieve
//			-1 = error
//
//	Description:
//	Return the number of rows placed in the data source
//
//////////////////////////////////////////////////////////////////////////////
//	
//	Revision History
//
//	Version
//	6.0   Initial version
//
//////////////////////////////////////////////////////////////////////////////
//
//	Copyright © 1996-1997 Sybase, Inc. and its subsidiaries.  All rights reserved.
//	Any distribution of the PowerBuilder Foundation Classes (PFC)
//	source code by other than Sybase, Inc. and its subsidiaries is prohibited.
//
//////////////////////////////////////////////////////////////////////////////
Integer			li_nextlevel

// Check Arguments
If (al_parent < 0) or IsNull(al_parent) Then Return -1

// we know which level we are on by the parent, so we want to get the children
//	items for the parent, which mean that the data for the next level down (level + 1)
// will need to be retrieved for a level centric tree.
li_nextlevel = of_GetNextLevel(al_parent)
if li_nextlevel < 1 then Return -1

// retrieve the rows into the datasource
If isvalid(inv_levelsource) then
	Return inv_levelsource.of_retrieve(li_nextlevel, aa_args, ads_data)
End If

Return -1
end function

Name	Owner
systemfunctions.isnull	systemfunctions
systemfunctions.isvalid	systemfunctions
pfc_n_cst_tvsrv_levelsource.of_retrieve	pfc_n_cst_tvsrv_levelsource
pfc_u_tvs.of_getnextlevel	pfc_u_tvs