virtual (procedure directive)

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 virtual (procedure directive)


A virtual method is a method whose call is linked to its code at run time, by a process called late binding.

Syntax

 procedure Method(<parameter list>); virtual;

Remarks

Declaring a method as virtual makes it possible for methods with the same name to be implemented in different ways within a hierarchy of object types.

To make a method virtual, follow its declaration in the object type with a semicolon, the reserved word "virtual", and another semicolon, like this:

 procedure Method(param1, Param2: Integer); virtual;

See Also

Тэги: virtual
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