The given code is correct. The lower-case string is a C# alias for the System.String class. System.Int64 is an opaque 64-bit pointer value.
The code so far is correct. What is missing though is the calling convention, which by default is cdecl, but .NET doesn't use that one by default for P/Invoke. It uses stdcall/winapi as the default calling convention. Change the CallingConvention in the DllImport line. Additionally using CharSet=CharSet.Unicode adds an implicit W as per Win32 calling conventions to the function name. Since the sqlite3_open16 doesn't have that you need to use ExactSpelling to prevent it from adding that W. Instead of rolling your own P/Invoke wrapper I'd suggest using one of the available .NET wrappers for SQLite. Mike > -----Ursprüngliche Nachricht----- > Von: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] Im Auftrag von > Sherief N. Farouk > Gesendet: Donnerstag, 27. November 2008 18:26 > An: 'General Discussion of SQLite Database' > Betreff: Re: [sqlite] sqlite3_open16 fails on Windows Vista 64b > > > I am calling now this: > > > > [DllImport("sqlite3.dll", CharSet = CharSet.Unicode)] > > internal static extern System.Int64 sqlite3_open16(string > > filename, out IntPtr handle); > > > > I now finds an entry point, but i returned to the previous error: > > An attempt was made to read program in invalid format. > > > > But now everything is 64bit. > > > > Ti Ny > > > > No offense, but I'm beginning to believe you don't fully > grasp what you're trying to do. First of all, if DW can't > find the entry point then it's not there. Second, I don't > think the CLR type corresponding to the return value of > sqlite3_open16 is System.Int64, and I'm not sure what string > is (CLR's string type is String, capital S). How about you > upload that DLL of your somewhere, send a link and I wouldn't > mind checking it for you. > > - Sherief > > _______________________________________________ > sqlite-users mailing list > sqlite-users@sqlite.org > http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users > _______________________________________________ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
