DRV_ENABLE
Enables the driver. The driver should initialize any variables and locate devices with the input and output (I/O) interface.
Parameters
hdrvr
Handle of the installable driver instance.
Return Value
No return value.
Remarks
The dwDriverId, lParam1, and lParam2 parameters are not used.
Drivers are considered enabled from the time they receive this message until they are disabled by using the DRV_DISABLE message.
Requirements
** Windows NT/2000:** Requires Windows NT 3.1 or later.
** Windows 95/98:** Requires Windows 95 or later.
** Header:** Declared in Mmsystem.h.
See Also