Open topic with navigation
To ensure multithreaded filter processes are thread-safe, you must create a unique Filter context for every thread by instantiating a
Filter object. In addition, threads must not share context objects, and the same context object must be used for all API calls in the same thread. Creating a context object for every thread does not affect performance because the context object uses minimal resources.
For example, your code should have the following logic in a thread:
objFilter = new Filter(); objFilter.FilterDirectory = m_filterDirectory; objFilter.SetInputSource(infile); objFilter.GetDocFormatInfo(); if (objFilter.CanFilter() == true) objFilter.FilterTo(outfile); objFilter.ShutdownFilter();