## Virtual Device Driver Reference for OS/2

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### VDHFreeBlock - Parameters

PoolHandle (HBLOCK) Handle (from VDHCreateBlockPool) to the pool of memory blocks that contains the memory block to free.

BlockToFree (PVOID) Address of the memory block to free.

Success If the function is successful, it returns nothing.

Failure If BlockPool is not a valid handle to a memory block pool, or if BlockToFree is not a block allocated from the BlockPool memory block pool, a system halt occurs.