MIDIOUTCAPS structure
The MIDIOUTCAPS structure describes the capabilities of a MIDI output device.
Syntax
typedef struct {
WORD wMid;
WORD wPid;
MMVERSION vDriverVersion;
TCHAR szPname[MAXPNAMELEN];
WORD wTechnology;
WORD wVoices;
WORD wNotes;
WORD wChannelMask;
DWORD dwSupport;
} MIDIOUTCAPS;
Members
wMid
Manufacturer identifier of the device driver for the MIDI output device. Manufacturer identifiers are defined in Manufacturer and Product Identifiers.wPid
Product identifier of the MIDI output device. Product identifiers are defined in Manufacturer and Product Identifiers.vDriverVersion
Version number of the device driver for the MIDI output device. The high-order byte is the major version number, and the low-order byte is the minor version number.szPname
Product name in a null-terminated string.wTechnology
Type of the MIDI output device. This value can be one of the following:Name Description MOD_MIDIPORT MIDI hardware port.
MOD_SYNTH Synthesizer.
MOD_SQSYNTH Square wave synthesizer.
MOD_FMSYNTH FM synthesizer.
MOD_MAPPER Microsoft MIDI mapper.
MOD_WAVETABLE Hardware wavetable synthesizer.
MOD_SWSYNTH Software synthesizer.
wVoices
Number of voices supported by an internal synthesizer device. If the device is a port, this member is not meaningful and is set to 0.wNotes
Maximum number of simultaneous notes that can be played by an internal synthesizer device. If the device is a port, this member is not meaningful and is set to 0.wChannelMask
Channels that an internal synthesizer device responds to, where the least significant bit refers to channel 0 and the most significant bit to channel 15. Port devices that transmit on all channels set this member to 0xFFFF.dwSupport
Optional functionality supported by the device. It can be one or more of the following:Name Description MIDICAPS_CACHE Supports patch caching.
MIDICAPS_LRVOLUME Supports separate left and right volume control.
MIDICAPS_STREAM Provides direct support for the midiStreamOut function.
MIDICAPS_VOLUME Supports volume control.
If a device supports volume changes, the MIDICAPS_VOLUME flag will be set for the dwSupport member. If a device supports separate volume changes on the left and right channels, both the MIDICAPS_VOLUME and the MIDICAPS_LRVOLUME flags will be set for this member.
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) |