## Presentation Device Driver Reference for OS/2

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### GreGetPairKerningTable Return Value - rc

rc (LONG) - returns Return Code.

On completion, the handling routine must return the number of kerning pairs returned in pKernPairs (cPairs), or GPI_ALTERROR if an error occurs.

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_COORDINATE_OVERFLOW
PMERR_DEV_FUNC_NOT_INSTALLED
PMERR_EXCEEDS_MAX_SEG_LENGTH
PMERR_HDC_BUSY
PMERR_INSUFFICIENT_MEMORY
PMERR_INV_CODEPAGE
PMERR_INV_COORD_SPACE
PMERR_INV_HDC
PMERR_INV_LENGTH_OR_COUNT
PMERR_INV_SETID

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