of_getprev

pfcapsrv.pbl   >   pfc_n_cst_nodebase   >   of_getprev

Name	Datatype
lnv_nil	n_cst_nodebase

public function integer of_getprev (ref n_cst_nodebase anv_node);//////////////////////////////////////////////////////////////////////////////
//
//	Function:  of_getprev
//
//	Access:  public
//
//	Arguments : 
//	anv_node   (by reference) node to be retrieved from the list
//
//	Returns:  integer
//	1 = success
//	-1 = Failure, No next node
//
//	Description:  
//	Retrieves the node before the current node.
//
//////////////////////////////////////////////////////////////////////////////
//
//	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.
//
//////////////////////////////////////////////////////////////////////////////

n_cst_nodebase lnv_nil

// Validate that there is a valid previous.
If IsNull(inv_prev) or Not IsValid(inv_prev) Then
	anv_node = lnv_nil
	Return -1
End If

anv_node = inv_prev
return 1
end function

Name	Owner
pfc_n_cst_tree.of_search	pfc_n_cst_tree
pfc_n_cst_tree.of_addnode	pfc_n_cst_tree
pfc_n_cst_tree.of_balanceleft	pfc_n_cst_tree
pfc_n_cst_tree.of_balanceright	pfc_n_cst_tree
pfc_n_cst_tree.of_delnode	pfc_n_cst_tree
pfc_n_cst_tree.of_balance	pfc_n_cst_tree
pfc_n_cst_tree.of_traverse	pfc_n_cst_tree
pfc_n_cst_linkedlistbase.of_destroy	pfc_n_cst_linkedlistbase
pfc_n_cst_linkedlistbase.of_remove	pfc_n_cst_linkedlistbase

Name	Owner
systemfunctions.isnull	systemfunctions
systemfunctions.isvalid	systemfunctions