TADO Objects and DLL's

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#3453

From: Keith Willis
Date: Fri, 30 Aug 2002 02:03

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Dear All,

I have recently tried to pass pointers to a TADOConnection and TADOQuery
into a "C" linkage exported function in a DLL.  When I attempt to access any
of the TADO object properties within the DLL, it seems to work fine until I
close down my calling app which then crashes on exit.

Because of this I attempted a different approach passing only the Connection
String to the DLL as a null-terminated string with local copies of the
TADOConnection and TADOQuery objects in the DLL, (actually dropped on a
dialog box form contained in the DLL).  This was even worse As soon as I
attempted to connect to the Microsoft SQL Server 2000 database using the
TADOConnection object in the DLL I got an exception ("CoInitialise not
loaded") or something like that.

At this point, I've given up.  Is there some fundamental problem with using
TADO objects in DLL's?

Cheers,
Keith.

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Newsgroups: borland.public.cppbuilder.database.ado
Subject: TADO Objects and DLL's
Date: Fri, 30 Aug 2002 12:03:33 +1000
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