m. Th. wrote:

> Also, the this problem (perhaps) is related to Blobs rather to
> DevEx. specifics.
> I succeeded to run a simple app with DevExpress as GUI layer. However, I
> have a real world application which still throws enough AVs. Also, if
> you (or someone else) has similar findings please report here.
>

Bingo!
I succeeded to run one of our real world apps. (~800 kLOC). DevExpress,
VirtualTrees (ok, it needed some minor changes here), FastReport and of
course IBO.

Problems which still remain to solve:

1. TIB_Events doesn't work

The following code...

procedure TdmoMain.ibdMainAfterConnect(Sender: TIB_Connection);
begin
ib_eMain.RegisterEvents; //ib_eMain is a TIB_Events instance
end;

crashes very badly with an AV in fbclient.dll. Definitely needs to look at.

2. TIBODatabase.Password not streamed correctly .dfm

Self explaining. There is also a bug report on Sf.net on the issue.

3. A bunch of 'Record not found' exceptions (stack trace & code bellow)
but the program seems to work ok because AFAIS these are located
immediately after opening/refreshing the dataset so, anyway, the cursor
is at the beginning. But anyway imho this shows a weak point in our
bookmark engine.

DB.TDataSet.GotoBookmark
IBODataSet.TIBODataSet.Resync([rmExact..rmCenter])
DB.TDataSet.Resync

here is the code:

procedure TIBODataset.Resync( Mode: TResyncMode );
begin
if Active then
begin
// It is important to prevent the Resync() process from being interrupted
// by a callback. Rows should already be in the buffer but perhaps not.
InternalDataset.BeginCallbackFreeze;
try
inherited Resync( Mode ); //<--- Exception here!
finally
InternalDataset.EndCallbackFreeze;
end;
end;
end;


If someone has something to say / help...

HTH,

m. Th.