constructor Create(AOwner: TComponent); override;
__fastcall virtual TControl(System::Classes::TComponent* AOwner);
Calling Create constructs and initializes an instance of TControl. However, you should never attempt to instantiate a TControl. This class is intended solely as a base class from which other control classes descend and you should only call Create to instantiate one of these descendants.
Create calls the parent constructor and initializes the control.
Note: If a control's constructor allocates resources or memory, also override the destructor to free those resources.