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How can I register COM Compnent in VC++

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How can I register COM Compnent in VC++

Nov 7th, 2008

Hi,

I working on COM Components in VC++.NET 2005,

 Help with Code Tags 
 C++ Syntax (Toggle Plain Text) 
HRESULT hr = spCrypt.CoCreateInstance(__uuidof(Cryptographer::TMMPlayerHelper), 0);
    if( FAILED(hr) )
        spCrypt = 0;
HRESULT hr = spCrypt.CoCreateInstance(__uuidof(Cryptographer::TMMPlayerHelper), 0);
    if( FAILED(hr) )
        spCrypt = 0;

I am facing an error here.

I debug the code and found that "CoCreateInstance()" is returning a message

"Class is not registered"

an my program gets crash.

How can I resolve this problem? Please reply me soon.

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Asif

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Re: How can I register COM Compnent in VC++

Nov 7th, 2008

Whose class is Cryptographer ? Is it registered ?

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Re: How can I register COM Compnent in VC++

Nov 7th, 2008

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Originally Posted by Ancient Dragon

Whose class is Cryptographer ? Is it registered ?

Hi,

Cryptographer is a namespace. and it has different structs and classes. TMMPlayerHelper is declared as struct in this namespace.

I did not perform any registration step because i did not know how to register it?

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Asif

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Re: How can I register COM Compnent in VC++

Nov 7th, 2008

COM only works with ActiveX components or Windows Services programs, all of which must be registered before they can be used. Here is how to register them. If that registration fails then its not written as a COM component and therefore can not be used the way your attempting to use it.

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Re: How can I register COM Compnent in VC++

Nov 10th, 2008

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Originally Posted by Ancient Dragon

COM only works with ActiveX components or Windows Services programs, all of which must be registered before they can be used. Here is how to register them. If that registration fails then its not written as a COM component and therefore can not be used the way your attempting to use it.

Thanks a lot.
Ancient Dragon. you have solved my problem. I have register the required dll and now its working perfectly.

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Regards,
Asif