multiple inheritance ??

[cmrchs]

Hi,

what is the syntax to inherit from an interface AND a class ?

Suppose :
interface IA
Sub F()
end interface

class B
...
end class

and I want to create a new class C inheriting from both :
class C
Implements IA _
Inherits B

Sub F() implements IA.F
End sub
end class

but I get a syntax error in the inheriting clause

Any ideas ?

Thank you

Chris

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[Armin Zingler]

"Chris C" <cm****@yahoo.com> schrieb

Hi,

what is the syntax to inherit from an interface AND a class ?
You can not inherit from an interface. You can only implement an interface.
Suppose :
interface IA
Sub F()
end interface

class B
...
end class

and I want to create a new class C inheriting from both :
class C
Implements IA _
Inherits B

Sub F() implements IA.F
End sub
end class

but I get a syntax error in the inheriting clause

Any ideas ?

Remove "_"
--
Armin

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[Chris Dunaway]

On Tue, 25 May 2004 16:59:39 +0200, Armin Zingler wrote:

You can not inherit from an interface. You can only implement an interface.

While technically true, one interface can inherit from another, however.

For example:

Public Interface IBase
Function DoSomething() As Boolean
End Interface

Public Interface IDerived
Inherits IBase

Function DoSomethingElse() As Integer
End Interface

Public Class MyClass
Implements IDerived

End Class

--
Chris

To send me an E-mail, remove the "[", "]", underscores ,lunchmeat, and
replace certain words in my E-Mail address.

[Armin Zingler]

"Chris Dunaway" <"dunawayc[[at]_lunchmeat_sbcglobal[dot]]net">
schrieb

On Tue, 25 May 2004 16:59:39 +0200, Armin Zingler wrote:

You can not inherit from an interface. You can only implement an
interface.

While technically true, one interface can inherit from another,
however.

Yep.
--
Armin

[John Fiala]

Chris C (cm****@yahoo.com) wrote in message news:<uJ*************@TK2MSFTNGP10.phx.gbl>...

and I want to create a new class C inheriting from both :
class C
Implements IA _
Inherits B

Sub F() implements IA.F
End sub
end class

but I get a syntax error in the inheriting clause

Any ideas ?

Thank you

Chris

I just did this, actually. It's :

class C
Inherits B
Implements IA

end class

No underscore, and Inherits first.

John Fiala
jcfiala523-at-hotmail.com
http://www.livejournal.com/users/fiala_tech/