midiOutGetDevCaps function
The midiOutGetDevCaps function queries a specified MIDI output device to determine its capabilities.
Syntax
MMRESULT midiOutGetDevCaps(
UINT_PTR uDeviceID,
LPMIDIOUTCAPS lpMidiOutCaps,
UINT cbMidiOutCaps
);
Parameters
uDeviceID
Identifier of the MIDI output device. The device identifier specified by this parameter varies from zero to one less than the number of devices present. The MIDI_MAPPER constant is also a valid device identifier.This parameter can also be a properly cast device handle.
lpMidiOutCaps
Pointer to a MIDIOUTCAPS structure. This structure is filled with information about the capabilities of the device.cbMidiOutCaps
Size, in bytes, of the MIDIOUTCAPS structure. Only cbMidiOutCaps bytes (or less) of information is copied to the location pointed to by lpMidiOutCaps. If cbMidiOutCaps is zero, nothing is copied, and the function returns MMSYSERR_NOERROR.
Return value
Returns MMSYSERR_NOERROR if successful or an error otherwise. Possible error values include the following.
| Return code | Description |
|---|---|
| MMSYSERR_BADDEVICEID | The specified device identifier is out of range. |
| MMSYSERR_INVALPARAM | The specified pointer or structure is invalid. |
| MMSYSERR_NODRIVER | The driver is not installed. |
| MMSYSERR_NOMEM | The system is unable to load mapper string description. |
Remarks
To determine the number of MIDI output devices present in the system, use the midiOutGetNumDevs function.
Requirements
Minimum supported client |
Windows 2000 Professional [desktop apps only] |
Minimum supported server |
Windows 2000 Server [desktop apps only] |
Header |
Mmsystem.h (include Windows.h) |
Library |
Winmm.lib |
DLL |
Winmm.dll |
Unicode and ANSI names |
midiOutGetDevCapsW (Unicode) and midiOutGetDevCapsA (ANSI) |