## Presentation Device Driver Reference for OS/2

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### GreDeviceQueryFonts Return Value - rc

rc (LONG) - returns Return Codes.

The handling routine should return the number of fonts not returned or else return GPI_ALTERROR if an error occurred.

Possible Errors Detected: When an error is detected, the handling routine must call WinSetErrorInfo to post the condition. Error codes for conditions that the handling routine is expected to check include:

PMERR_DEV_FUNC_NOT_INSTALLED
PMERR_INV_HDC

Refer to the "Error Explanations" section of the Presentation Manager Programming Reference for further explanation.