key events not working in Reaper on macOS about baseview HOT 2 OPEN

wondering if the problem actually lies within nih_plug: the VST3 onKeyDown implementation returns kResultOk, but according to the API docs it should return either kResultTrue or kResultFalse depending on whether the key is consumed. perhaps kResultOk is interpreted similarly to kResultTrue?

i have a feeling that Reaper might be using these VST3 key handlers more pedantically than most hosts

from baseview.

returning kResultFalse from the VST3 key handlers indeed allows the key events to flow to the plugin (this has been fixed in nih-plug now robbert-vdh/nih-plug@245add6)! but now the problem is that no key events are being consumed from Reaper's perspective, so e.g. the spacebar and enter keys will always get passed to Reaper. to fix this, baseview would need to have some way to signal to the VST3 key handlers about when to consume/ignore key events, but not sure what that would require.

this is also an issue with JUCE btw: https://forum.juce.com/t/reaper-stealing-spacebar-keystrokes-in-texteditor/30689/8

from baseview.