midi1monitor.exe is a very simple monitor for a MIDI input port, supplied as part of the SDK. It uses the WinMM MIDI 1.0 API to show the messages arriving on a port.
It’s built for simple jobs. For anything more, use MIDI Monitor.
The raw MIDI 1.0 bytes are on the left, in hexadecimal. What those bytes mean is on the right, with numbers in decimal.
Active sensing and clock messages are hidden by default, because they make everything else hard to read. Press the spacebar to show or hide them.
Press escape to exit.
Windows MIDI Services is an open source project with all source available on GitHub. We have a great community on Discord as well. Between GitHub and Discord, you should find the information you are looking for.
