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{$MODE DELPHI}
type
TExecProc = procedure of object;
TA = class
public
procedure P1; overload; virtual;
procedure P1(const param: boolean); overload; virtual;
end;
TB = class(TA)
public
procedure P1(const param: boolean); override;
end;
procedure ShowProc(p: TExecProc);
begin
p;
end;
procedure TA.P1;
begin
writeln('1');
end;
procedure TA.P1(const param: boolean);
begin
writeln('2');
halt(1);
end;
procedure TB.P1(const param: boolean);
begin
writeln('3');
halt(2);
end;
var
a: TA;
b: TB;
begin
a := TA.Create;
b := TB.Create;
ShowProc(a.P1); // compile and execute correctly
ShowProc(b.P1); // error on compile !!! but here should be call TA.P1 !!!
end.
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