I thought at one point I thought I saw either a port of Spy++ or a native variant but I can’t for the life of me find it in the repos.
I want to monitor the Window message queue during debugging of my app. I don’t need to see register level or assembly detail, just API stuff. I’ve used Spy++ on Windows.
There is a spybmessage tool in the Haiku git repository but it isn’t included in the build. You can probably just download the cpp file and then build with g++ spybmessage.cpp -lbe -o spybmessage or something similar.