Tportmidi.Device_infoDevice information.
The type for device information.
Values of this type survive a terminate but the refered host API index will no longer be valid.
val interface : t -> stringinterface d is the underlying MIDI API.
val name : t -> stringname d is the device name.
val input : t -> boolinput d is true iff input is available.
val output : t -> booloutput d is true iff output is available.
val is_virtual : t -> boolis_virtual b is true iff this is a virtual device.