E2076 This form of method call only allowed for class methods (Delphi)

Go Up to Error and Warning Messages (Delphi)

You were trying to call a normal method by just supplying the class type, not an actual instance.

This is only allowed for class methods and constructors, not normal methods and destructors.

program Produce;

type
  TMyClass = class
  (*...*)
  end;
var
  MyClass: TMyClass;

begin
  MyClass := TMyClass.Create;  (*Fine, constructor*)
  Writeln(TMyClass.ClassName); (*Fine, class method*)
  TMyClass.Destroy;            (*<-- Error message here*)
end.

The example tries to destroy the type TMyClass - this doesn't make sense and is therefore illegal.

program Solve;
type
  TMyClass = class
  (*...*)
  end;
var
  MyClass: TMyClass;

begin
  MyClass := TMyClass.Create;  (*Fine, constructor*)
  Writeln(TMyClass.ClassName); (*Fine, class method*)
  MyClass.Destroy;             (*Fine, called on instance*)
end.

As you can see, we really meant to destroy the instance of the type, not the type itself.