## Presentation Device Driver Reference for OS/2

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### SplEnumQueue Parameter - pcbNeeded

pcbNeeded (PULONG) - output Size in bytes of available information.

A value of 0 specifies that the size is not known. This can occur when enumerating queues on a print server. To determine the buffer size needed, the caller should allocate a buffer in 4096-byte increments until a successful return code is received, or until the buffer size exceeds 65535.