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62 lines
1.6 KiB
Plaintext
62 lines
1.6 KiB
Plaintext
// Testing Harbour classes and objects management
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// be aware Harbour provides a much simpler way using Class HBClass
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#include "hboo.ch"
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PROCEDURE Main()
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LOCAL oObject := TAny():New()
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? ValType( oObject )
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? Len( oObject ) // 3 datas !
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? oObject:ClassH() // retrieves the handle of its class
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? oObject:ClassName() // retrieves its class name
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oObject:Test() // This invokes the below defined Test function
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// See QSelf() and :: use
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? oObject:cName
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oObject:DoNothing() // a virtual method does nothing,
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// but it is very usefull for Classes building logic
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RETURN
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FUNCTION TAny() /* builds a class */
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STATIC hClass
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IF hClass == NIL
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hClass := __clsNew( "TANY", 3 ) // cClassName, nDatas
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__clsAddMsg( hClass, "cName", 1, HB_OO_MSG_DATA ) // retrieve data
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__clsAddMsg( hClass, "_cName", 1, HB_OO_MSG_DATA ) // assign data. Note the '_'
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__clsAddMsg( hClass, "New", @New(), HB_OO_MSG_METHOD )
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__clsAddMsg( hClass, "Test", @Test(), HB_OO_MSG_METHOD )
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__clsAddMsg( hClass, "DoNothing", 0, HB_OO_MSG_VIRTUAL )
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ENDIF
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/* warning: we are not defining datas names and methods yet */
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RETURN __clsInst( hClass ) // creates an object of this class
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STATIC FUNCTION New()
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LOCAL Self := QSelf()
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? ValType( Self )
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? "Inside New()"
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::cName := "Harbour OOP"
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RETURN Self
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STATIC FUNCTION Test()
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LOCAL Self := QSelf() // We access Self for this method
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? "Test method invoked!"
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? ::ClassName() // :: means Self: It is a Harbour built-in operator
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RETURN NIL
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