[ask] TAPI3 in C#.net

Question

2.50/5 (2 votes)

See more:

hi,

I try to develop application using TAPI3 interface, but I got some problem when run C++ code in c#.net:

ITStreamControl * pStreamControl;
HRESULT hr = pBasicCall->QueryInterface(
        IID_ITStreamControl,
        (void **) &pStreamControl
        );

I used this : 
ITStreamControl pstream_control;
                                    
pstream_control=(ITStreamControl) call_control;

but I got this message 'Specified cast is not valid.'

Regards,
Andy

Posted 3-May-11 1:02am

eyeshield21

Updated 3-May-11 1:03am

Ankit Rajput

v2

Add a Solution

Comments

Ankit Rajput 3-May-11 7:29am

What is the type of call_control?

Manfred Rudolf Bihy 3-May-11 11:43am

That exactly should point to the solution!

eyeshield21 3-May-11 12:47pm

hi ankit,

pBasicCall in C++ and call_control in C# is ITBasicCallControl type

regards,
andy

Manfred Rudolf Bihy 3-May-11 11:45am

Would you care to ask a question?
Hint: Questions are indicated by having a question mark (?) at the end of the sentence.

eyeshield21 3-May-11 12:50pm

hi manfred,

my question is how to convert the c++ code:
<pre>
ITStreamControl * pStreamControl;
HRESULT hr = pBasicCall->QueryInterface(
IID_ITStreamControl,
(void **) &pStreamControl
);
</pre>
into C# code.

regards,
andy

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Kim Togo · Accepted Answer · 2011-05-04T10:48:00

Solution 1

Take a look at http://www.julmar.com/tapi/[^].
There is a link to ITAPI3 - Managed .NET Library for TAPI 3.0 Development
[^] and ATAPI - Managed TAPI wrapper for TAPI 2.0[^].

Hope it can help you :-)

Posted 4-May-11 10:48am

Kim Togo

Comments

eyeshield21 5-May-11 22:40pm

Thanks kim Togo.