Ergebnis der Suchanfrage

• Forum: Object-Pascal / Delphi-Language

  Re: How to - string in DLL

    Delphi
    by WojTec, 22. Jun 2011
  Hm, my functions working as in example on 1st page in this thread, size is length of S, in Ansii should be S length, but in Unicode length * 2 if we talking about bytes nor string length, but the same code working if both EXE and DLL are Ansii OR Unicode. So, what I should to do?
• Forum: Object-Pascal / Delphi-Language

  Re: How to - string in DLL

    Delphi
    by WojTec, 22. Jun 2011
  There is another problem - compatibility Ansii/Unicode.
  DLL is compiled with D2010, it uses unit with string type.
  In API unit I strings declared as AnsiString:
  
  S: AnsiString;
  S := FuncReturnsString();
  StrLCopy(lpBuffer, PAnsiChar(AnsiString(S)), nSize) // second typecast is from old version
  
  If both DLL and app are compiled in Ansii compiler (D7) - it working, if in Unicode (D2010) -...
• Forum: Object-Pascal / Delphi-Language

  Re: How to - string in DLL

    Delphi
    by WojTec, 20. Jun 2011
  Thanks guys, you helped me so much! :D
• Forum: Object-Pascal / Delphi-Language

  Re: How to - string in DLL

    Delphi
    by WojTec, 20. Jun 2011
  Oh gosh, I forgot add stdcall before external in app. Ah :( Now working! Thanks :D
  
  Also a few of you told that better is using WideChar. I tried this:
  
  // In DLL
  
  function FooncUni(Data: WideString): WideString; stdcall;
  var
  S: string;
  begin
• Forum: Object-Pascal / Delphi-Language

  Re: How to - string in DLL

    Delphi
    by WojTec, 20. Jun 2011
  DLL:
  library StringDLL;
  
  uses
  SysUtils;
  
  function Foonction(Data: PWideChar; Buffer: PWideChar; lenBuffer: Cardinal): Cardinal; stdcall;
  var
  S: string;
  begin
• Forum: Object-Pascal / Delphi-Language

  Re: How to - string in DLL

    Delphi
    by WojTec, 19. Jun 2011
  library StringDLL;
  
  uses
  SysUtils;
  
  function Foonction(Data: PWideChar; Buffer: PWideChar; lenBuffer: Cardinal): Cardinal; stdcall;
  var
  S: string;
  begin
  S := 'foo' + Data;
• Forum: Object-Pascal / Delphi-Language

  Re: How to - string in DLL

    Delphi
    by WojTec, 19. Jun 2011
  Code (function from @Luckie article).
  
  library StringDLL;
  
  uses
  SysUtils;
  
  function func1(s: PWideChar; Buffer: PWideChar; lenBuffer: Integer): Integer; stdcall;
  var
  foo: String;
• Forum: Object-Pascal / Delphi-Language

  Re: How to - string in DLL

    Delphi
    by WojTec, 19. Jun 2011
  I tested @Luckies code and it working in example, but don't work in this case:
  
  
  function func1(s: PChar; Buffer: PChar; lenBuffer: Integer): Integer; external 'StringDLL.dll';
  
  var
  Buffer: array of Char;
  BufferSize: DWORD;
  begin
  BufferSize := High(Buffer);
• Forum: Object-Pascal / Delphi-Language

  Re: How to - string in DLL

    Delphi
    by WojTec, 17. Jun 2011
  Thanks @Luckie!
  
  Can I ask for example how to use functions @himitsu listed? Or just use WideString as Delphi's string?
• Forum: Object-Pascal / Delphi-Language

  How to - string in DLL

    Delphi
    by WojTec, 16. Jun 2011
  This is the bigest problem I currently have: how to use strings in DLL.
  
  I know have to use PChar in exports. How about internal code that operates on Delphi's strings? I want to share this DLL with any language, so I can't use external memory manager (as I did with DLLs that can be used by my software only). For example function returns string or parameter is string or variable or constant is...