delete a member of enum - a symbolic constant enum_id - id of enum value - value of symbolic constant. serial - serial number of the constant in the enumeration. See op_enum() for for details. bmask - bitmask of the constant ordinary enums accept only -1 as a bitmask returns: 1-ok, 0-failed
success del_enum_member(long enum_id, long value, long serial, long bmask);