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Chris Luck
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 Posted: Tue Nov 25, 2003 5:06 am Post subject: Re: strange behavior of DBGrid and mouse wheel in Delphi 5 |
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"Marek" <mark*NOSPAM*@tradition.ca> wrote
| Quote: | When I use MouseWheel on TDBGrid control, it moves
record selection but it does not change current record.
snip |
See if this thread is any help -
http://tinyurl.com/n2p3
--
Regards,
Chris Luck
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Marek
Guest
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| Posted: Tue Nov 25, 2003 5:35 am Post subject: strange behavior of DBGrid and mouse wheel in Delphi 5 |
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When I use MouseWheel on TDBGrid control, it moves record selection but it
does not change current record.
You can see that when you are using "indicator" column (indicator stays on
one row while selection goes to the other).
If my DBGrid works in "Master-Detail" model, the relation is broken as
moving selection does not change the current record.
In addition, the selection moves in current visible range of rows, not on
entire grid.
Could anybody explain this and ,perhaps, point out a solution ?
Thank you.
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Lester Hanger
Guest
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| Posted: Sun Nov 30, 2003 9:21 pm Post subject: Re: strange behavior of DBGrid and mouse wheel in Delphi 5 |
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Marek <mark*NOSPAM*@tradition.ca> wrote
| Quote: | When I use MouseWheel on TDBGrid control, it moves record selection but it
does not change current record.
You can see that when you are using "indicator" column (indicator stays on
one row while selection goes to the other).
If my DBGrid works in "Master-Detail" model, the relation is broken as
moving selection does not change the current record.
In addition, the selection moves in current visible range of rows, not on
entire grid.
Could anybody explain this and ,perhaps, point out a solution ?
Thank you.
|
I use the following in a TDBGrid descendant component:
{--- fix MouseWheel to allow scrolling of grid ---}
procedure TRDBGrid.WMMouseWheel(var Msg: TWMMouseWheel);
begin
if (DataLink <> nil) AND (DataLink.Active) then try
DataLink.DataSet.MoveBy(-Msg.WheelDelta div 120);
except;
end;
end; {WMMouseWheel}
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