## Presentation Device Driver Reference for OS/2

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### GreQueryHWPaletteInfo - Parameters

hdc (HDC) - input Device context handle.

ulStart (ULONG) - input Starting index, first palette entry to query.

cclr (ULONG) - input Count of palette entries.

pclr (PULONG) - input Pointer to table of RGB2 palette entries.

pInstance (PVOID) - input Pointer to instance data.

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

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_INV_PALETTE

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