DXmSvnGetNumSelections - Retrieves (returns) the number of selected entries.
The identifier (widget ID) of the SVN widget.
routine returns the number
of entries currently selected by the user. Use this routine to determine
the number of entries required in the array being passed to the
routine. Make this call in your application
between calls to
to ensure that the selected list is not changing.
An integer that represents the number of selected entries.