W1009 Redeclaration of '%s' hides a member in the base class (Delphi)
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A property has been created in a class with the same name of a variable contained in one of the base classes. One possible, and not altogether apparent, reason for getting this error is that a new version of the base class hierarchy has been installed and it contains new member variables which have names identical to your properties' names. -W
(*$WARNINGS ON*)
program Produce;
type
Base = class
v : integer;
end;
Derived = class (Base)
ch : char;
property v : char read ch write ch;
end;
begin
end.
Derived.v overrides, and thus hides, Base.v; it will not be possible to access Base.v in any variable of type Derived without a typecast.
(*$WARNINGS ON*)
program Solve;
type
Base = class
v : integer;
end;
Derived = class (Base)
ch : char;
property chV : char read ch write ch;
end;
begin
end.
By changing the name of the property in the derived class, the error is alleviated.