## Presentation Device Driver Reference for OS/2

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### GreQueryEngineVersion - Parameters

pInstance (PVOID) - input Pointer to instance data.

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

rc (LONG) - returns Return codes.

GreQueryEngineVersion returns the engine version number (lVersion), or it returns GPI_ALTERROR if an error occurs. For example, it might return 0X000000200L = 2.0.