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.

QuickInfo

  Windows NT: Requires version 3.1 or later.
  Windows: Requires Windows 95 or later.
  Windows CE: Unsupported.
  Header: Declared in mmsystem.h.