function connects a MIDI input device to a MIDI thru or output device, or
connects a MIDI thru device to a MIDI output device.
| HMIDI hMidi,
| HMIDIOUT hmo,
| LPVOID pReserved
Handle of a MIDI input device or a MIDI thru device. (For thru devices, this
handle must have been returned by a call to the midiOutOpen
Handle of the MIDI output or thru device.
Reserved; must be NULL.
Returns MMSYSERR_NOERROR if successful or an error otherwise. Possible error
values include the following:
||Specified input device is already connected to an output device.
||Specified device handle is invalid.
After calling this function, the MIDI input device receives event data in an
MIM_DATA message whenever a message with the same event data is sent to the
output device driver.
A thru driver is a special form of MIDI output driver. The system will allow
only one MIDI output device to be connected to a MIDI input device, but multiple
MIDI output devices can be connected to a MIDI thru device. Whenever the given
MIDI input device receives event data in an MIM_DATA message, a message with
the same event data is sent to the given output device driver (or through the
thru driver to the output drivers).
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