Anteckning
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The auxGetDevCaps function retrieves the capabilities of a given auxiliary output device.
Syntax
MMRESULT auxGetDevCaps(
UINT uDeviceID,
LPAUXCAPS pac,
UINT cbac
);
Parameters
uDeviceID
Identifier of the auxiliary output device to be queried. Specify a valid device identifier (see the following comments section), or use the following constant:
| Value | Meaning |
|---|---|
| AUX_MAPPER | Auxiliary audio mapper. The function returns an error if no auxiliary audio mapper is installed. |
pac
Pointer to an AUXCAPS structure to be filled with information about the capabilities of the device.
cbac
Size, in bytes, of the AUXCAPS structure.
Return value
Returns MMSYSERR_NOERROR if successful or an error otherwise. Possible error values include the following.
| Return code | Description |
|---|---|
|
Specified device identifier is out of range. |
Remarks
The device identifier in uDeviceID varies from zero to one less than the number of devices present. AUX_MAPPER may also be used. Use the auxGetNumDevs function to determine the number of auxiliary output devices present in the system.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 2000 Professional [desktop apps only] |
| Minimum supported server | Windows 2000 Server [desktop apps only] |
| Target Platform | Windows |
| Header | mmeapi.h (include Windows.h) |
| Library | Winmm.lib |
| DLL | Winmm.dll |