<div>
<div class="content wysiwyg-content">
I am building an SDI MFC application which has a user interface class and a database class. &nbsp;I am also using a virtual device driver to access the network interface card in a promiscuous mode. &nbsp;The packet monitor function makes a call to DeviceIoControl to retrieve any packets that arrive at the NIC. &nbsp;Since at any moment, there may or may not be a packet to read, I call GetOverlappedResult which waits indefinetly for a packet arrival. &nbsp;This, of course locks up the many windows GUI messages I am using to update the GUI, since windows is in a single thread mode and I am blocking any other progress. &nbsp;How should I implement this function to run under a separate thread and still have the packet results available to the other thread?<br />
<br />
Thanks
</div>
</div>


I am building an SDI MFC application which has a user interface class and a database class.  I am also using a virtual device driver to access the network interface card in a promiscuous mode.  The packet monitor function makes a call to DeviceIoControl to retrieve any packets that arrive at the NIC.  Since at any moment, there may or may not be a packet to read, I call GetOverlappedResult which waits indefinetly for a packet arrival.  This, of course locks up the many windows GUI messages I am using to update the GUI, since windows is in a single thread mode and I am blocking any other progress.  How should I implement this function to run under a separate thread and still have the packet results available to the other thread?

Thanks

How to implement Multi-threading

C++ is an intermediate-level general-purpose programming language, not to be confused with C or C#. It was developed as a set of extensions to the C programming language to improve type-safety and add support for automatic resource management, object-orientation, generic programming, and exception handling, among other features.