WindowProc() in debug and release mode

[rp_suman]

I am getting the expected MIDI acknowledgement messages in release mode from the H/W but some MIDI messages are missing in debug mode( not coming to WindowProc()). Is there any difference in behaviour of WindowProc() between debug and release mode? Best Regards, Suman

[eraccn]

I don't think there's a difference between Debug and Release mode for WinProc(),please check your code and make sure.