String/Char-Pointer aus C# DLL korrekt auslesen

[DeddyH]

Ein Versuch noch:

Delphi-Quellcode:

Function GetVarInfo(hFile, iVar:Integer; varname: PAnsiChar; var varinfo: integer): Integer;stdcall; 
  external 'c:\test\io32.dll' name 'GetVarInfo';

...

var 
  hFile, iVar: integer;
  varname2: AnsiString;
  varinfo: integer;
begin
  SetLength(varname2, 1024);
  FillChar(varname2, Length(varname2), #0);
  fehler := GetVarInfo(hFile, iVar, PAnsiChar(varname2), varinfo);
  SetLength(varname2, StrLen(PAnsiChar(varname2)));
  ShowMessage(varname2);
end;