## Presentation Device Driver Reference for OS/2

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### GreDeviceQueryFontAttributes - Parameters

hdc (HDC) - input Device context handle.

cMetrics (ULONG) - input Size of FONTMETRICS structure.

pfmMetrics (PFONTMETRICS) - input Pointer to FONTMETRICS structure.

pInstance (PVOID) - input Pointer to instance data.

lFunction (ULONG) - input High-order WORD=flags; low-order WORD= NGreDeviceQueryFontAttributes.

rc (BOOL) - returns Return Codes.

On completion, the handling routine must return a BOOLEAN value to indicate success or an error.

TRUE Successful
FALSE Error

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 in the Presentation Manager Programming Reference for further explanation.