Several Problems

[khavor]

I have your latest binary installed in OBS 27.2.4 Windows 10 64bit. Everything seems to work except when I have OBS set to minimize to the system tray, and when I minimize OBS, it minimizes to the taskbar with an icon in the system tray also. I have to click on the taskbar icon to re-open OBS. If I remove obs-midi.dll from the plugins directory, minimizing to the system tray works again.

Also, when I compiled obs-midi using Visual Studio 16 2019 Community Edition, the created plugin is named obs-studio.dll. I renamed it obs-midi.dll and replaced your binary with my compiled version. OBS crashes on startup with this crash report:
`Unhandled exception: c0000005
Date/Time: 2022-04-12, 21:28:17
Fault address: 7FFB792EC4ED (c:\programdata\video\obs\obs-plugins\64bit\obs-midi.dll)
libobs version: 27.2.4 (64-bit)
Windows version: 10.0 build 19043 (release: 2009; revision: 1586; 64-bit)
CPU: Intel(R) Core(TM) i7-6700 CPU @ 3.40GHz

Thread 1F48: (Crashed)
Stack EIP Arg0 Arg1 Arg2 Arg3 Address
0000009184AFDA40 00007FFB792EC4ED 0000009184AFDAA0 0000027920CF7AA0 0000000000000000 000002792587F7A0 obs-midi.dll!0x7ffb792ec4ed
0000009184AFDA80 00007FFB792FE62F 0000000000000000 0000027920CF7B90 0000027920CF7B90 000002792582B350 obs-midi.dll!0x7ffb792fe62f
0000009184AFDB50 00007FFB792E884E 0000027900000001 FFFFFFFFFFFFFFFF 0000027920C8E0A0 000002792587F7A0 obs-midi.dll!0x7ffb792e884e
0000009184AFDBD0 00007FFB792E7E54 0000027920CF7B80 0000027925817C80 000002792584E310 FFFFFFFFFFFFFFFE obs-midi.dll!0x7ffb792e7e54
0000009184AFDC60 00007FFB792E93A8 000002792582C2B0 0000000000000000 0000027925817C80 0000027925817C80 obs-midi.dll!0x7ffb792e93a8
0000009184AFDD00 00007FFB792E72C0 0000027925817A80 0000027920D89F40 0000027913B74583 000000007FFEF000 obs-midi.dll!0x7ffb792e72c0
0000009184AFDD90 00007FFB792F9854 000002792581F5E0 0000027920A95520 000002792581F5E0 0000000000000140 obs-midi.dll!0x7ffb792f9854
0000009184AFDDD0 00007FFBA18147A1 0000000000000000 0000009184AFDEA8 0000027920A95520 0000027928370000 obs.dll!obs_init_module+0x51
0000009184AFDE00 00007FFBA1813D7C 0000000000000008 000002792581F5E0 0000009184AFDEA9 0000009184AFDEA9 obs.dll!load_all_callback+0x6c
0000009184AFDE30 00007FFBA18145EB 00007FFBA1813D10 0000000000000000 0000027920707D20 000002791BFCBAC0 obs.dll!obs_find_modules+0x39b
0000009184AFDF10 00007FFBA18147FE 000002791BE12600 00007FF7F0E173C8 0000027913B74980 0000000000000001 obs.dll!obs_load_all_modules+0x1e
0000009184AFDF40 00007FF7F0C68C5D 0000027915CD4580 0000027915CD4580 FFFFFFFFFFFFFFFF 0000009184AFF460 obs64.exe!OBSBasic::OBSInit+0x45d
0000009184AFEE50 00007FF7F0C418A0 0000009184AFF350 00007FF7F0F06DC0 0000000000000008 0000027913C33D60 obs64.exe!OBSApp::OBSInit+0x390
0000009184AFF1B0 00007FF7F0C47FB0 0000027913C23FE0 0000027913C23FB0 0000000000000000 0000027913C33CA0 obs64.exe!run_program+0x8a0
0000009184AFF580 00007FF7F0C4A330 0000000000000000 0000000000000000 0000000000000000 FFFFFFFFFFFFFFFF obs64.exe!main+0x6f0
0000009184AFF750 00007FF7F0DE7067 0000000000000000 0000000000000000 0000000000000000 0000000000000000 obs64.exe!WinMain+0x157
0000009184AFF7E0 00007FF7F0DE6912 0000000000000000 0000000000000000 0000000000000000 0000000000000000 obs64.exe!__scrt_common_main_seh+0x106
0000009184AFF820 00007FFBC0D87034 0000000000000000 0000000000000000 0000000000000000 0000000000000000 kernel32.dll!0x7ffbc0d87034
0000009184AFF850 00007FFBC2622651 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ntdll.dll!0x7ffbc2622651`

I noticed your obs-midi.dll is 581KB and my compiled version is only 367KB.