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Article #1624ClientDataSet - TProvider Communication Problem...
From: Panagiotis L. Staikos
Date: Mon, 05 Jul 1999 00:00
Date: Mon, 05 Jul 1999 00:00
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1994 bytes
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.
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: fcd2b,7c692df7d820ec3f,start X-Google-Attributes: gidfcd2b,public From: "Panagiotis L. Staikos" <pstaiko@ekt.gr> Subject: ClientDataSet - TProvider Communication Problem... Date: 1999/07/05 Message-ID: <37805D31.B7AF2946@ekt.gr> X-Deja-AN: 497278009 Content-Transfer-Encoding: 7bit Organization: National Documentation Centre(NDC), National Hellenic Research Foundation(NHRF) Vasileos Kvn/nou 48, 11635 Athens, tel: +301 72.11.202, +301 72.17.520, Fax: +301 72.46.824, +301 72.52.223, http://www.ekt.gr X-Accept-Language: en,el Content-Type: text/plain; charset=iso-8859-7 Mime-Version: 1.0 Newsgroups: borland.public.cppbuilder.database.multi-tier