We use LISTBOX to browse a large DB. When the user resets the vertical thumbpos in a network, the speed is very, very slow.
In the forum I found this:
Yes! You have to modify TWBrowse class - Method VScroll. Substitute
::Skip( nLParam - ::oVScroll:GetPos() )
with
( ::cAlias ) -> ( CmxKeyGoTo( nLParam ) )
or the xxxKeyGoto() function provided by your RDD.
Is this still the way to solve the problem or is there a better solution?
Thanks for help,
Dietmar
Dietmar,
> When the user resets the vertical thumbpos in a network
Do you mean when the user changes the vertical thumbpos with the mouse ?
Do you mean when the user changes the vertical thumbpos with the mouse ?[/quote]
Yes, that's what I mean.
In the meantime I changed
::Skip( ::VGetThumbPos( nPos ) - ::VGetPos() ) to
Eval( ::bKeyNo, ::VGetThumbPos( nPos ), Self )
and added
DEFAULT ::bKeyNo := {| n | iif( n == nil,;
( cAlias )->( OrdKeyNo() ),;
( cAlias )->( OrdKeyGoto( n );
) ) }
(from xbrowse)
It may not be a general solution, but for me it is working ok, because we only browse databases, no arrays or text.
Dietmar
