I admit I have not much ideas when it comes to C# and Windows GUI programming.
Now here is the problem, Jan Axelson has written the USB PIC firmware and
the host program (in C# and VB.net) as an example to test WinUSB.

I have tried the host software and the firmware and they seem to work
fine except one bug. If I do nothing and close the program, the program
will raise an unhandled exception.

Download:
http://www.lvr.com/winusb.htm

Detailed description of the problem:
http://forum.microchip.com/tm.aspx?m=339511

I suppose Jan Axelson will solve the problem sooner or later. But
I am thinking this must be not a complicated problem and I'd like
to solve it as a learning exercise. But it proved to be more difficult
than I thought. Any ideas?

By the way, I have written libusb based program to test the firmware
under Linux and the program runs fine.
http://forum.microchip.com/tm.aspx?m=340892


Regards,
Xiaofan
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