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METHOD

Declare a METHOD for a class in the class header
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 Syntax

        METHOD <MethodName>( [<params,...>] ) [ CONSTRUCTOR ]  
        METHOD <MethodName>( [<params,...>] ) INLINE <Code,...>  
        METHOD <MethodName>( [<params,...>] ) BLOCK  <CodeBlock>  
        METHOD <MethodName>( [<params,...>] ) EXTERN <FuncName>([<args,...>])
        METHOD <MethodName>( [<params,...>] ) SETGET  
        METHOD <MethodName>( [<params,...>] ) VIRTUAL  
        METHOD <MethodName>( [<param>] )  OPERATOR <op>  
        METHOD <MethodName>( [<params,...>] ) CLASS <ClassName>  

 Arguments

        <MethodName>    Name of the method to define      

        <params,...>    Optional parameter list    

 Description

      Methods are "class functions" which do the work of the class.  All
      methods must be defined in the class header between the  CLASS and
      ENDCLASS commands.  If the body of a method is not fully  defined
      here, the full body is written below the ENDCLASS command  using
      this syntax:

      METHOD <MethodName>( [<params,...>] ) CLASS <ClassName>

      Methods can reference the current object with the keyword "Self:" or
      its shorthand version "::".

      CLAUSES:

      CONSTRUCTOR  Defines a special method Class Constructor method,  used
      to create objects.  This is usually the  New() method. Constructors
      always return the new  object.

      INLINE       Fast and easy to code, INLINE lets you define the  code
      for the method immediately within the definition  of the Class. Any
      methods not declared INLINE or BLOCK  must be fully defined after
      the ENDCLASS command.  The <Code,...> following INLINE receives a
      parameter  of Self. If you need to receive more parameters, use  the
      BLOCK clause instead.

      BLOCK        Use this clause when you want to declare fast 'inline'
      methods that need parameters. The first parameter to  <CodeBlock>
      must be Self, as in:

      METHOD <MethodName> BLOCK {|Self,<arg1>,<arg2>, ...,<argN>|...}

      EXTERN       If an external function does what the method needs,  use
      this clause to make an optimized call to that  function directly.

      SETGET       For calculated Data. The name of the method can be
      manipulated like a Data element to Set or Get a value.

      VIRTUAL      Methods that do nothing. Useful for Base classes where
      the child class will define the method's behavior, or  when you are
      first creating and testing a Class.

      OPERATOR     Operator Overloading for classes.  See example
      Tests/TestOp.prg for details.

      CLASS <ClassName>  Use this syntax only for defining a full method
      after  the ENDCLASS command.

 Examples

      
      CLASS TWindow
         DATA   hWnd, nOldProc
         METHOD New( ) CONSTRUCTOR
         METHOD Capture() INLINE  SetCapture( ::hWnd )
         METHOD End() BLOCK  { | Self, lEnd | If( lEnd := ::lValid(),;
                                 ::PostMsg( WM_CLOSE ),), lEnd }
         METHOD EraseBkGnd( hDC )
         METHOD cTitle( cNewTitle ) SETGET
         METHOD Close() VIRTUAL
      ENDCLASS

      METHOD New( ) CLASS TWindow
         local nVar, cStr
         ... <code> ...
         ... <code> ...
      RETURN Self
      

 Tests

      
      TestOp.prg
       

Status

      Ready

 Compliance

      METHOD is a Harbour extension.

 Platforms

      All