DRVM_MAPPER_PREFERRED_GET
A version of this page is also available for
4/8/2010
This message is used to query the preferred device, using the existing waveInMessage or waveOutMessage function to the WAVE_MAPPER device id.
Syntax
DRVM_MAPPER_PREFERRED_GET
wParam =pDeviceIDlParam = Reserved
Parameters
- pDeviceID
Pointer to the DWORD variable into which the function writes the device ID of the current preferred device. If no device is available that qualifies as a preferred device, the variable will contain -1.
- lParam
Reserved; must be zero.
Return Values
One of the values described in the following table is returned.
| Value | Description |
|---|---|
MMSYSERR_NOERROR |
The call was a success. |
MMSYSERR_ERROR |
The call failed. |
Remarks
DRVM_MAPPER_PREFERRED_SET and DRVM_MAPPER_PREFERRED_GET are not defined by Windows Embedded CE. To use these messages, you must first define them in your code:
#define DRVM_MAPPER 0x2000
#define DRVM_MAPPER_PREFERRED_GET (DRVM_MAPPER+21)
#define DRVM_MAPPER_PREFERRED_SET (DRVM_MAPPER+22)
See Also
Reference
Waveform Audio Messages
waveInMessage
waveOutMessage