## Physical Device Driver Reference

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### SCREENDD_GETCURRENTBANK (00h) - Packet Length

Packet Length Represents the combined length of all parameter packet fields . This is a required field for all calls, including those made by way of the 32-bit DosDevIOCtl, with a minimum packet length of 10 bytes. If the verification of the packet field fails, the ERROR_124_INVALID_PARAMETER message is returned.