Undeclared identifier 에러 발생 할 때

Unit에 포함이 안 될 때 유용한 정보 The following table (which is not exhaustive) lists types and functions (but generally not constants) together with the unit required: Type Unit _Stream ADODB_TLB akTop, akLeft, akRight, akBottom Controls AnsiLowerCase SysUtils Application (the variable not a type) Forms Beep SysUtils or Windows (different functions) CGID_EXPLORER ShlObj CN_BASE Controls CoInitialize Activ.....