ulParmNum (ULONG) - input
Specifies either that the entire PRJINFO3 structure is to be modified, or that only one specific parameter is to be modified.
If ulParmNum is 0, pBuf must contain a complete PRJINFO3 structure. Otherwise, pBuf must contain a new valid value for the parameter to be modified. The following are the possible values for this parameter:
Parameter
Value