midi/in
The midi/in
device class consists of MIDI sequencers that are used for input. You access
these devices by using the MIDI functions, which are described in the Win32
SDK.
The lineGetID and phoneGetID functions fill a VARSTRING structure, setting the dwStringFormat
member to the STRINGFORMAT_BINARY value and appending this additional member:
DWORD DeviceId;
// identifier of MIDI device
The DeviceId
member is the identifier of a closed MIDI device. You use this identifier in a
call to the midiInOpen function to open the device for input. You can
use the resulting device handle to record MIDI data from the line or phone
device.