TMyBaseClass=class
constructor(test:integer);
end;
TMyClass=class(TMyBaseClass);
TClass1<T: TMyBaseClass,constructor>=class()
public
FItem: T;
procedure Test;
end;
procedure TClass1<T>.Test;
begin
FItem:= T.Create;
end;
var u: TClass1<TMyClass>;
begin
u:=TClass1<TMyClass>.Create();
u.Test;
end;
How do I make it to create the class with the integer param. What is the workaround?
Just typecast to the correct class:
type
TMyBaseClassClass = class of TMyBaseClass;
procedure TClass1<T>.Test;
begin
FItem:= T(TMyBaseClassClass(T).Create(42));
end;
Also it's probably a good idea to make the constructor virtual.