請問我在form call某一個dll function SysDate:string;stdcall;external 'PPublic.dll'; 在form create call 但是程式結束時出現 Invalid pointer operation

Are you sure the dll function is returning a string? IMHO you should avoid using string in dll and use PChar instead. 發表人 - william 於 2003/01/08 15:27:18

如果你參數要使用string 必須在, dll及呼叫雙方之project中均第一個uses ShareMem    例如:這是calling.dpr    

program Calling;
uses
  ShareMem,
  Forms,
...