## Presentation Device Driver Reference for OS/2

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### SplProtSendCmd Parameter - pcbOutData

pcbOutData (PULONG) - output Points to the length of the output buffer.

On entry, this is set to the length of the output buffer passed in. On exit , it is updated with the length of data available.

If ERROR_MORE_DATA(234) or NERR_BufTooSmall(2123) is set, this field has the buffer size required to get all available information.