CoCreateInstance failed

[Wolfgang Jia]

I have a simple component. It receives and stores data. The data needs to be decoded before can be used. Then I set a CodecManager in the component. When I try to retrieve the data in a event processing, the codec manager should provide a codec for use. But at this point, CodecManager failed. I don't know why? Anybody help. Is it legal to call CoCreateInstance in event processing?

[sudeesh]

U can call CoCreateinstance in the event handler but it is better u create the component some where else say add an Init function and within this u create it and use in the thread.

Sudeesh

[Kamaraj m]

The information u given is too abstract. provide more clarity on ur problem or place some piece of code for reference. becaz we cant find out the root cause without code samples.

Kamaraj[in]

[Steve S]

When you say 'event processing', do you mean in a COM sink interface, or normal message handling? What HRESULT does CoCreateInstance return? Can you write a minimal COM client that calls CoInitialize(), and successfully CoCreateInstance the codec, then release it and call CoUninitialize()?

Steve S Developer for hire

[Wolfgang Jia]

Thanks