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,
