Hi,

I am using Delphi 7 with DBISAM 426 Build 3 and I am attempting to
copy the BLOB record from one table to the BLOB record of another
table.

The following code throws up an error 10030 at the line indicated. Why
does this happen and how can I go around it? The record is
successfully posted to the table despite the error.

oSrcStream
:=oTemplate.CreateBlobStream(oTemplate.fieldbyname('content'),
bmRead);
try
     oTb.edit;
     oTgtStream := oTb.CreateBlobStream(oTb.FieldByName('question'),
bmWrite);
      try
           oTgtStream.CopyFrom(oSrcStream, oSrcStream.Size);
           oTb.Post;
      finally
           oTgtStream.Free;   // Error 10030 here and program crashes
      end;
finally
    oSrcStream.Free;
end;

Thanks.

Frederick,

<< The following code throws up an error 10030 at the line indicated. Why
does this happen and how can I go around it? The record is successfully
posted to the table despite the error. >>

You need to make sure that you free any modified BLOB streams *prior* to the
Post.  The Free is what causes the field to be marked as modified, etc.

This is mentioned here in the manual under "Updating BLOB Fields" (the last
Note):

http://www.elevatesoft.com/manual?action=mantopic&id=dbisam4&product=d&version=7&category=1&topic=30

--
Tim Young
Elevate Software
www.elevatesoft.com