## Virtual Device Driver Reference for OS/2

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### VDHPopStack - Parameters

NumBytes (ULONG) Number of bytes to pop off the client's stack. Must be an even number.

DataPtr (PVOID) Pointer to the data to pop off the client's stack.

rc (BOOL) - returns

Success If the function was successful, it returns a nonzero value.

Failure If this function fails, it returns 0 (zero) if a fault would occur when accessing the user stack. If NumBytes is odd, a system halt occurs.