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of_refreshitem
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Full name
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pfc_u_tv.of_refreshitem
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Access
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public
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Extend of
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integer
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Return value
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integer
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Prototype
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public function integer of_refreshitem(long,long)
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Name
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Datatype
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li_Index
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Integer
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li_Limit
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Integer
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ltvi_Item
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TreeViewItem
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public function integer of_refreshitem (long al_handle, long al_row);//////////////////////////////////////////////////////////////////////////////
//
// Function: of_RefreshItem
//
// Access: public
//
// Arguments:
// al_Handle The handle of the item to be refreshed.
// al_Row The row of the DataStore pointing to the item.
//
// Returns: Integer
// 1 - the item was refreshed successfully
// -1 - an error occurred
//
// Description: Refresh an item in the TreeView. This includes removing
// all its children (and discarding their rows from the DataStores)
// and resetting its Label and Data attributes from the DataStore.
//
// NOTE: If the value of any of the key columns in the DataStore
// have changed, this function MUST be used rather than
// of_RefreshItem(al_Handle). Because it would not be able to
// find the proper row. Get the row by calling of_GetDataRow
// BEFORE it is changed.
//
//////////////////////////////////////////////////////////////////////////////
//
// Revision History
//
// Version
// 5.0 Initial version
// 6.0.01 Change to return successful return code
//
//////////////////////////////////////////////////////////////////////////////
//
// Copyright © 1996-1999 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_Index, li_Limit
TreeViewItem ltvi_Item
If GetItem(al_Handle, ltvi_Item) = -1 Then Return -1
// Remove its child items
If ltvi_Item.Expanded Then
CollapseItem(al_Handle)
GetItem(al_Handle, ltvi_Item)
End If
If of_DiscardChildren(al_Handle) = -1 Then Return -1
// Determine proper element in the data source attribute class
li_Limit = UpperBound(inv_ds)
If ltvi_Item.Level > li_Limit Then
li_Index = li_Limit
Else
li_Index = ltvi_Item.Level
End If
// Reset the item's attributes
If of_SetItemAttributes(li_Index, inv_ds[li_Index].ds_obj, al_Row, ltvi_Item) = -1 Then Return -1
If SetItem(al_Handle, ltvi_Item) = -1 Then Return -1
Return 1
end function
pfcmain.pbl
> 
pfc_u_tv
>