Interfaces
From Lazarus wiki
Jump to navigationJump to searchInterfaces can be utilized as an alternative solution to the need of multiple inheritance, which Object Pascal currently does not support. These are distinct from the Interface reserved word which relates to program structure.
Full example program
program project1;
{$mode delphi}
{$interfaces corba}
type
IMyDelegate = interface
procedure DoThis (value: integer);
end;
TMyClass = class (TInterfacedObject, IMyDelegate)
procedure DoThis (value: integer);
end;
procedure TestDelegate;
var
delegate: TMyClass;
intfdelegate: IMyDelegate;
begin
delegate := TMyClass.Create;
intfdelegate := IMyDelegate(delegate);
intfdelegate.DoThis(1);
end;
{ TMyClass }
procedure TMyClass.DoThis(value: integer);
var
Str: string;
begin
WriteLn('Success!!! Type <enter> to continue');
ReadLn(Str);
end;
begin
TestDelegate;
end.
