COM methods calls are getting blocked

[bcbpablo]

Hi all, new member having a strange issue with BCB5.

I have an application that acquires data from an instrument. A request is put on a command queue and picked up by a processing timer. The data is acquired on this timer thread.

Meanwhile another app is calling a COM method to check the status of the data acquisition. What I am finding however is that the COM call is not being processed until the data acquisition is finished.

During the acquisition there is a wait loop with a call to Application->ProcessMessages and a sleep of 100ms. The entire acquisition takes around 5 seconds.

Is there any way I can force the COM interface to be processed? Something similar to the ProcessMessages command?

Any thoughts appreciated.
-Paul

 

[2ffat]

Yes, try using threads.


James P. Cottingham
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[bcbpablo]

Thats my first thought also but this causes calls to other activex objects to go nuts and I suspect will take a fair bit of rearchitecting.

any other ways of giving the com interface some processing time?

thanks