Hello Everyone,

We are trying to work with an ActiveX component called T-List.  This is used 
to generate a tree of data that will provide a multitude of functionality 
and provide a simple interface that will allow users to drag and drop the 
data elsewhere in the Tree.

We seem to be having some issues referencing some of the event handlers 
involved in the drag and drop operations.  The difficulty we are having is 
that the event handler is expecting the cancel value to be passed back but 
Xbase does not seem to appreciate this regardless of being passed by value 
or reference.

Does anyone know of a way to pass back a value to an OCX event handler or a 
sufficient work around?
I've included the documentation we have on the event below.  Thanks.

AutoDragRequest Event Description

This event is generated just before the drag/drop process starts in 
AutoDragDrop mode and provides control over initiation of the drag/drop 
operation.

Syntax

Sub TList_AutoDragRequest([Index As Integer,], SourceItem As Long, Cancel As
Integer)

Remarks

The AutoDragRequest event syntax has these parts:

Part Description
Index
An integer that uniquely identifies a control if it is in a control array.

SourceItem
The index of an item being dragged during the operation. Note youcan set 
this parameter to any valid item index. There is a list of predefined 
values, which you can use as an index (in multiple selection 192  
Properties, events, methods, functions reference Programmer's Guide TList 8 
ActiveX Control mode only):

-1 drag all items of this tree
-2 drag no items (but drag/drop operation will take place anyway)
-3 drag all selected items
-4 drag selected item

Cancel
This variable should be set to True to cancel the drag/drop operation.

Sample

The following example illustrates how to disable drag/drop operations for
all root items:

Private Sub TList1_AutoDragRequest(SourceItem As Long, Cancel As Integer)
If SourceItem >= 0 Then
Cancel = IIf(TList1.Shift(SourceItem) = 0, True, False)
EndIf
...
End Sub