DRV_ENABLE message

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

Minimum supported client

Windows 2000 Professional [desktop apps only]

Minimum supported server

Windows 2000 Server [desktop apps only]

Header

Mmsystem.h (include Windows.h)

See also

Installable Drivers
Installable Driver Messages

 

 

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