## Presentation Device Driver Reference for OS/2

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### GreOutlinePath - Parameters

hdc (HDC) - input Device context handle.

idPath (LONG) - input Path ID. It must be 1.

flOptions (ULONG) - input Outline path flags.

Possible values are:

OPTH_NO_CLIPPING_REQD The graphics engine will outline the path without clipping and line attributes set. This value can be used for devices that have hardware support for area fills with at least simple clipping. This output will be sent to the presentation driver via GreDrawLinesInPath for each subpath. This flag should only be used with the graphics engine version number 0x202 or later (see GreQueryEngineVersion).

OPTH_QRY_PATH_POINTS Returns the number of points in a path. The path is not deleted. This flag should only be used with the graphics engine version number 0x202 or later (see GreQueryEngineVersion).

pInstance (PVOID) - input Pointer to instance data.

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

rc (LONG) - returns Return codes.

This function returns an integer (cHits) indicating, where appropriate, whether correlation hits were detected:

GPI_OK Successful
GPI_HITS Successful with correlate hit (returned by display drivers when the correlate flag is ON, and a hit is detected)
GPI_ERROR 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_BASE_ERROR
PMERR_BITMAP_NOT_SELECTED
PMERR_COORDINATE_OVERFLOW
PMERR_DEV_FUNC_NOT_INSTALLED
PMERR_HDC_BUSY
PMERR_INV_COLOR_DATA
PMERR_INV_COLOR_INDEX
PMERR_INV_COORD_SPACE
PMERR_INV_FILL_PATH_OPTIONS
PMERR_INV_HDC
PMERR_INV_IN_AREA
PMERR_INV_IN_PATH
PMERR_INV_LENGTH_OR_COUNT
PMERR_INV_PATH_ID
PMERR_INV_PICK_APERTURE_POSN
PMERR_INV_RECT
PMERR_PATH_UNKNOWN

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