Hi, Yes you must uae cdecl but pass integer as var not pointer, use pansistring not string (unicode), use iballoc
All is very simple to write in delphi i wrote many udf,s without problem Regards, Karol Bieniaszewski ----- Reply message ----- Od: "hamacker [email protected] [firebird-support]" <[email protected]> Do: <[email protected]> Temat: [firebird-support] Creating UDF - stdcall vs cdecl Data: wt., paź 7, 2014 14:21 Hi everyone, I am studying how to create UDFs on Firebird, but there is a thing that I can not understand. Samples that I found over internet, like this: http://www.firebirdsql.org/en/writing-udfs-in-delphi-for-interbase-firebird/ All functions are exported as stdcall:function Teste(sVar:PAnsiChar; iVar:Integer):PAnsiChar; stdcall ; I dont use string, only pAnsiChar, Integer and Double.Ok, at this point, but when register inside Firebird and execute, the app (flamerobin or ibexpert) crash. Then, I change to export function DLL as cdecl and change Integer type to Integer as Pointer:type PInteger = ^Integer;function Teste(sVar:PAnsiChar; iVar:PInteger):PAnsiChar; cdecl; runs fine, but I have very difficult to handle with pointers (hello pascal). I can´t make a simple 'hello word' using stdcall functions. Even copy samples over internet.I use Delphi XE5 and FB 2.5.3. I would like to know if is possible to work writting UDFs as stdcall or I have to adapter with cdecl and pointers to make my own UDFs. Thx,
