Hello,
I constantly stumble with the behaviour of the TDBGrid.
I understand that it's a complex component, but every time I find an
issue an Luiz fixes it, two more pop up (or an older one resurfaces).
The latest episode of the saga is the futility of using a custom editor
(with OnSelectEditor), since the grids then sets the value of the field
using this snippet of code
if (FEditor<>nil) and FEditor.Visible then begin
Msg.LclMsg.msg:=GM_GETVALUE;
Msg.grid:=Self;
Msg.Col:=FCol;
Msg.Row:=FRow;
Msg.Value:=GetCells(FCol, FRow);
FEditor.Dispatch(Msg);
SetEditText(Msg.Col, Msg.Row, Msg.Value);
end;
and this only works with the editors defined in Grids.pas, the only ones
managing the GM_GETVALUE message.
For other kinds of editors the result depends on how you move in the
grid: it could either maintain the value the editor set or reset it to
an empty string.
I think I will file a bug once I can create a simple project, but in the
meantime if somebody has an idea on how to solve it, it would be
appreciated.
Oh, and a custom editor has no way of adapting if the dbgrid is
scrolled, a column is resized, etc. Again, this only work for the
editors defined in Grids.pas.
Bye
--
Luca Olivetti
Wetron Automation Technology http://www.wetron.es/
Tel. +34 93 5883004 (Ext.3010) Fax +34 93 5883007
--
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