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分享非抽象父类可以引用子类么
public class a
....
end class
public class b
inherits a
.....
end class
dim a1 as a
dim b1 as new b
a1=b1
....
end class
public class b
inherits a
.....
end class
dim a1 as a
dim b1 as new b
a1=b1
...全文
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ly_0205 2007-04-17
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可以
