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The answer was given a few posts away. Here is the answer.

Mark Johnson said:

-----------------------------------------------
I had this same problem.  The cause is the new tlb editor creates code with
a type IProviderPtr replacing  what used to be IProvider* in the generated
code.  If you go through all the generated source and replace IProviderPtr
with IProvider* the remote data modules will now work.  Hope this helps.

Mark Johnson
-----------------------------------------------


Panagiotis L. Staikos <pstaiko@ekt.gr> escribi� en el mensaje de noticias
37805D31.B7AF2946@ekt.gr...
> I have add at server Side (Remote DataModule)
> a TQuery Component and a TProvider(TProvider or TDataSetProvider)
> Component.
> I export the TProvider Component and it's DataSet property points to
> TQuery. The TQuery component has a SQL Statement.
> From Client Side i have a MIDAS, ClientDataset, DataSource, DBGrid
> Components.
> While i am connecting with my Server,when  i change the active property
> of The ClientDataSet to true
> (ClientDataSet Provider Property points to the Above TProvider)
> i get the Error :
> 'src->QueryInterface(GetIID(),(LPVOID*)(&intf))': No such interface
> supported
> @ C:\Program Files\Borland\CBuilder4\invlude\vcl\utilcls.h/2014
> Press [Y]es to terminate, [N]o to continue and [C]ancel to Debug.
>
> All the Providers from the server are shown in the drop-down list in the
> Provider property
> of the ClientDataSet Component!!!
>
> Prior the patch#1 i did't have any problem....
> More spesific the code that i use it works with C++Builder3, and
> C++Builder4 withou the path#1!!!
> How is the right connection between ClientDataSet and a Provider?
>
> I don't understand this error beacuse i think that all is ok.....
> (This problem was stop me since a week...)
> May i have a answer to this problem?
>
> Thanks. Panagiotis Staikos from Greece.
>
>
>

Thanks for your answer.
I was tried to fix this problem the previous week...
without check this newsgroup...
But i make a several changes in my automation object
and each time i replace all this types.
I hope to solve this problem soon...

Thanks agian. Panagiotis Staikos.(Sorry for my english... i don't know to write
very well)

Martin Hart wrote:

> The answer was given a few posts away. Here is the answer.
>
> Mark Johnson said:
>
> -----------------------------------------------
> I had this same problem.  The cause is the new tlb editor creates code with
> a type IProviderPtr replacing  what used to be IProvider* in the generated
> code.  If you go through all the generated source and replace IProviderPtr
> with IProvider* the remote data modules will now work.  Hope this helps.
>
> Mark Johnson
> -----------------------------------------------
>

There is a better idea .
You can replace the file  "tlib40.bpl" with the old file,and then regenerate
code
(like this: 1.add a method in tlb editor,2.save  3.delete the
methd,4.resave),.
now you can rebuild your app.
Shuijin Zheng