## Presentation Device Driver Reference for OS/2

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### GreOffsetRegion - Parameters

hdc (HDC) - input Device context handle.

hrgn (HRGN) - input Region handle.

pdpt (PPOINTL) - input Pointer to offset by which region is to be moved, in device coordinates:

dx X offset
dy Y offset

pInstance (PVOID) - input Pointer to instance data.

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

fSuccess (BOOL) - returns Return codes.

This function returns BOOLEAN (fSuccess).

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_COORDINATE_OVERFLOW
PMERR_HRGN_BUSY
PMERR_INV_COORDINATE
PMERR_INV_HRGN
PMERR_REGION_IS_CLIP_REGION

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