MXDM_GETNUMDEVS (Compact 2013)
3/26/2014
This message requests a user-mode mixer driver to return the number of device instances that it supports.
Syntax
typedef struct {
DWORD uDeviceId;
UINT uMsg;
DWORD dwUser;
DWORD lParam1;
DWORD lParam2;
} MXDM_GETNUMDEVS;
Members
- uDeviceId
Device identifier for the target device. It can be 0, 1, 2, and so on.
- uMsg
Equals MXDM_GETNUMDEVS.
- dwUser
Not used.
- lParam1
Not used.
- lParam2
Not used.
Return Value
Returns the number of devices the driver supports.
Remarks
A client sends the MXDM_GETNUMDEVS message by calling the user-mode driver's mxmdMessage entry point, passing the specified parameters.
Requirements
Header |
mmddk.h |