🚀 go-pugleaf

On Wed, 4 Apr 2001 11:26:27 +0800, "Lance Zhang" <lance219@yeah.net> wrote:

[snip]
>When I use a combination of TDatabase and TQuery it works just fine.
>But when I substitute them with TADOConnection and TADOQuery, an
>EOleSysError stating "CoInitiliaze not yet called" is raised upon the
>constructor of TDataModule1.
[snip]

Hi Lance,

    I've used ADO in a ISAPI DLL some time ago, and I've had to call
CoInitialize. It had worked, for me.

Ciao!

Giuliano

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Don't forget Conuninitialize too!

Giuliano wrote:

> On Wed, 4 Apr 2001 11:26:27 +0800, "Lance Zhang" <lance219@yeah.net> wrote:
>
> [snip]
> >When I use a combination of TDatabase and TQuery it works just fine.
> >But when I substitute them with TADOConnection and TADOQuery, an
> >EOleSysError stating "CoInitiliaze not yet called" is raised upon the
> >constructor of TDataModule1.
> [snip]
>
> Hi Lance,
>
>     I've used ADO in a ISAPI DLL some time ago, and I've had to call
> CoInitialize. It had worked, for me.
>
> Ciao!
>
> Giuliano

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--------------BD09AD5002DC21116D97DFFE--

Giuliano and Patrick,

Thank you both!

I'll have a try.

Lance

"Patrick Martin" <patrickmmartin@freenet.co.uk> wrote in message
news:3ACBBF4A.4FCA0CFB@freenet.co.uk...
> Don't forget Conuninitialize too!
>
> Giuliano wrote:
>
> > On Wed, 4 Apr 2001 11:26:27 +0800, "Lance Zhang" <lance219@yeah.net>
wrote:
> >
> > [snip]
> > >When I use a combination of TDatabase and TQuery it works just fine.
> > >But when I substitute them with TADOConnection and TADOQuery, an
> > >EOleSysError stating "CoInitiliaze not yet called" is raised upon the
> > >constructor of TDataModule1.
> > [snip]
> >
> > Hi Lance,
> >
> >     I've used ADO in a ISAPI DLL some time ago, and I've had to call
> > CoInitialize. It had worked, for me.
> >
> > Ciao!
> >
> > Giuliano
>

Patrick,

What's the right place to call CoUninitialize()?

Can you give a brief sample?

Lance Zhang

"Patrick Martin" <patrickmmartin@freenet.co.uk> wrote in message
news:3ACBBF4A.4FCA0CFB@freenet.co.uk...
> Don't forget Conuninitialize too!
>
> Giuliano wrote:
>
> > On Wed, 4 Apr 2001 11:26:27 +0800, "Lance Zhang" <lance219@yeah.net>
wrote:
> >
> > [snip]
> > >When I use a combination of TDatabase and TQuery it works just fine.
> > >But when I substitute them with TADOConnection and TADOQuery, an
> > >EOleSysError stating "CoInitiliaze not yet called" is raised upon the
> > >constructor of TDataModule1.
> > [snip]
> >
> > Hi Lance,
> >
> >     I've used ADO in a ISAPI DLL some time ago, and I've had to call
> > CoInitialize. It had worked, for me.
> >
> > Ciao!
> >
> > Giuliano
>

I like to force the calling of CoInitialize & CoUninitialize by calling them
in the constructor & destructor methods respectively of a global variable...
Declare this variable when you first start the app.... The constructor is
called automatically when the app starts & the destructor is called when the
app goes out of scope or ends.....

For instance I borrowed this from a VC++ sample provided by Microsoft....

struct InitOle {
  InitOle()  { ::CoInitialize(NULL); }
  ~InitOle() { ::CoUninitialize();   }
} _init_InitOle_;


Lance Zhang wrote in message <3aca95fa_2@dnews>...
>Hi! All,
>
>
>Context:
>I build a sample DLL following a article named "Using A Data Module In A
>DLL" By Mr. Mark CashMan published on http://www.temporaldoorway.com about
>how to put a datamodule in a dll--specifically the way to initialize a
>datamodule in a DLL.
>
>When I use a combination of TDatabase and TQuery it works just fine.
>But when I substitute them with TADOConnection and TADOQuery, an
>EOleSysError stating "CoInitiliaze not yet called" is raised upon the
>constructor of TDataModule1.
>
>Is it a ADO bug or just I neglect some steps?
>
>Pleas help!
>
>Lance Zhang
>
>