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Question: Is there a way to determine if a midi input or output is enabled or disabled? This can be useful for csurf extensions, so they can directly inform the user to disable their device in the settings (an API call for this would be great, of course).
Asked by Navelpluisje (62.45.65.x) on June 23 2026, 5:45pm
Reply on June 23 2026, 10:09pm:

iirc you can use get_config_var() with "midiins", "midiins_all", "midiins_cs", "midiouts"... these will all be bitmasks, array of uint64s.

Comments:

Posted by Navelpluisje (62.45.65.x) on June 28 2026, 1:23pm:
I use this struct to get the value: template struct ConfigVar { ConfigVar(const std::string &var_name) { int size = 0; void *addr; if (const int offset = projectconfig_var_getoffs(var_name.c_str(), &size)) { addr = projectconfig_var_addr(nullptr, offset); } else { addr = get_config_var(var_name.c_str(), &size); } if (size == sizeof(T)) { m_addr = static_cast(addr); } } bool SetValue(T

Posted by Navelpluisje (62.45.65.x) on June 28 2026, 1:26pm:
2nd attempt: I use this struct to get the value: github.com/navelpluisje/Reasonus-N... I use this for solodimdb10 with success but when requesting any of the midi values I only get 1768188269. Also checked the values in the reaper.ini file and there the values are the bitmasks as expected. Not sure what I am missing.
Posted by Justin on July 1 2026, 12:01am:
what type are you using for the template? should be uint64_t or whatnot
Posted by Navelpluisje (62.45.65.x) on July 2 2026, 5:01pm:
Looked a bit deeper into it. The size I get by get_config_var is 16. size of uint64_t is 8. Tried to see if there are types with a size of 16, but no success. when not checking the type size I do get the proper valkue as it is in the ini file. Am I missing something here?
Posted by Navelpluisje (62.45.65.x) on July 2 2026, 5:45pm:
Think I found it (with some help of cfillion). With type set to: __uint128_t it is working fine
Posted by Justin on July 2 2026, 11:20pm:
it's an array of uint64_t so you should ideally interpret it as that... it could get changed to a larger number in the future... but whatever works!

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