Hi. I'm developing a plugin. I'm trying to use
IDE_GetConnectionInfo in Delphi 2010 but i have no idea how to declare parameters

In the plugindoc.pdf i see:

IDE_GetConnectionInfo: procedure(var Username, Password, Database: PChar); cdecl;

but all variables contains ???? as result.

If i try to compile dll using d2007 all works fine...

Could you please help me?

How about using PAnsiChar?
1st Google hit: http://stackoverflow.com/questions/5545122/pchar-in-a-d2010-dll-called-in-a-d5-app-seem-corrupted

Yes.. that's the solution.. Thank you