## Presentation Device Driver Reference for OS/2

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### OS2_PM_DRV_DEVICENAMES Return Value - rc

rc (LONG) - returns Return codes.

The handling routine in the presentation driver returns a LONG integer. Valid values are:

-1 Successful
0 Error

Note: The system expects the successful and error return codes from OS2_PM _DRV_DEVICENAMES to be the opposite of those from OS2_PM_DRV_DEVMODE and the Enable subfunctions.