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59 lines
1.4 KiB
Plaintext
59 lines
1.4 KiB
Plaintext
// Using Harbour Class HBClass
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PROCEDURE Main()
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LOCAL oForm := TForm():New()
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LOCAL oSecond
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? "What's the default oForm and calculate area"
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? hb_ValToExp( oForm )
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? oForm:CalcArea()
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? "Set nTop to 5 and recalculate"
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oForm:nTop := 5
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? hb_ValToExp( oForm )
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? oForm:CalcArea()
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? "Create a new instance and calculate area"
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oSecond := TForm():New()
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? hb_ValToExp( oSecond )
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? oSecond:CalcArea()
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RETURN
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FUNCTION TForm()
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STATIC s_oClass
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IF s_oClass == NIL
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s_oClass := HBClass():New( "TFORM" ) // starts a new class definition
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s_oClass:AddData( "cName" ) // define this class objects datas
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s_oClass:AddData( "nTop" , 10 )
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s_oClass:AddData( "nLeft" , 10 )
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s_oClass:AddData( "nBottom", 20 )
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s_oClass:AddData( "nRight" , 40 )
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s_oClass:AddMethod( "New", @New() ) // define this class objects methods
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s_oClass:AddMethod( "Show", @Show() )
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s_oClass:AddInline( "CalcArea", ;
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{| self | ( ::nRight - ::nLeft ) * ( ::nBottom - ::nTop ) } )
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s_oClass:Create() // builds this class
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ENDIF
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RETURN s_oClass:Instance() // builds an object of this class
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STATIC FUNCTION New()
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LOCAL Self := QSelf()
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RETURN Self
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STATIC FUNCTION Show()
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LOCAL Self := QSelf()
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? "lets show a form from here :-)"
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RETURN NIL
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