Mark,

I don't think you need a message pump here.
There is other thing though in your code.
If your thread function is a member of the class
it must be static member and you need to create
an additional non-static method. Your code
should look like:

void __cdecl CLIGroup::CycleThread(void *parameter)
{
    CLIGroup *ptr = (CLIGroup *)parameter;
    ptr->_CycleThread();
}

void _CycleThread()
{
    // Here goes everything else and
    // here you can get access to member
    // variables, such as mSyncMarshalStream, etc.

}

Regards,

Alex Shevchuk

> -----Original Message-----
> From: Mark A. Rice [mailto:mriceCANARYLABS.COM]
> Sent: Friday, March 01, 2002 7:36 AM
> To: DCOMDISCUSS.MICROSOFT.COM
> Subject: Message pump in thread
>
>
> This is a really basic question, but one that has escaped my
> notice so far.
> In the following thread, do I need to put in a message pump somewhere?
>
> Thanks,
>
> Mark A. Rice
> Canary Labs, Inc.
> http://www.canarylabs.com
>
>
> void __cdecl CLIGroup::CycleThread(void *parameter)
> {
> USES_CONVERSION;
>
> CLIGroup *ptr;
> ptr = (CLIGroup *)parameter;
>
> HRESULT hRes = CoInitializeEx(NULL, COINIT_APARTMENTTHREADED);
> _ASSERTE(SUCCEEDED(hRes));
>
> // Marshal the IOPCSyncIO interface from the stream.
> CComPtr <IOPCSyncIO> syncIO;
> hRes = CoGetInterfaceAndReleaseStream (ptr->mSyncMarshalStream,
> IID_IOPCSyncIO, (void**)&syncIO);
> _ASSERTE(SUCCEEDED(hRes));
> if (FAILED(hRes)) {
> ATLTRACE (_T("\nCould not un-marshal IOPCSyncIO
> interface. Error
> code 0x%X\n"), hRes);
> }
>
> while (true) {
> wait = WaitForSingleObject(ptr->mTerminateEvent, timeOut);
> if (wait == WAIT_OBJECT_0)
> break; // We're Done
> else
> // Try reading some OPC Data
> if (syncIO)
> ptr->ReadCurrentValues(syncIO);
> }
>
> // Free the interface.
> syncIO.Release();
>
> // Free the COM library.
> CoUninitialize( );
>
> ptr->mThread = -1;
> SetEvent (ptr->mDoneTerminatingEvent);
> _endthread();
> }
>
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