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Safwan · Guest

HI
Borland C++Builder2006. Interbase 7.5 SP1, IBX 10.10, WinXP.
try this :

create table Data (
Serial integer not null primary key,
AreaID Integer,
AreaName Varchar(40)
);

Create an IBDatabase, IBTranaction, IBDataSet, DataSource
Create DBGrid, and connect them.
I didn't change any default properties of any.

Create OnChange event on AreaID like :

void __fastcall TForm1::IBDataSet1AREAIDChange(TField *Sender)
{
IBDataSet1AREANAME->AsString = "Enter area name here";
}

try to type any number in AreaID column in DBGrid and press enter.

I get this error

---------------------------
Debugger Exception Notification
---------------------------
Project Project1.exe raised exception class EStackOverflow with message
'Stack overflow'.
---------------------------
Break Continue Help
---------------------------

I try it with DBEdit insted of DBGrid, it works fine.

I try the same in Delphi 2006, and get the same result.
any comment.

Another question about C++Builder; When we prospect a new version of
C++Builder that not a preview?

Safwan.

Safwan · Guest

I will answer my self !!!!..

This is a bug in DBGrid,, see
http://qc.borland.com/wc/qcmain.aspx?d=23141

to avoid this error, rewrite your event like this :

void __fastcall TForm1::IBDataSet1AREAIDChange(TField *Sender)
{
Sender->OnChange = NULL;
IBDataSet1AREANAME->AsString = "Enter area name here";
Sender->OnChange = IBDataSet1AREAIDChange;
}

Thanks.

Quinn Wildman · Guest

It was posted in the registered users area for C++ Builder on 12/12/2005.

Safwan wrote: