hi all

it's my first message here, i have a problem with class Point
beacause this class is sealed. So i can not derive it

protected l class point3d : Point
{
point3d();

} ;

how can do that in other way ?
i want to use a new struct { int x,y,z } o a new class

thx in advance
claudio

On Tue, 6 Dec 2011 04:14:06 -0800 (PST), Hex
<(E-Mail Removed)> wrote:

>hi all
>
>it's my first message here, i have a problem with class Point
>beacause this class is sealed. So i can not derive it
>
> protected l class point3d : Point
> {
> point3d();
>
> } ;
>
>how can do that in other way ?
>i want to use a new struct { int x,y,z } o a new class
>
The .NET 4 type Point3D may provide a suitable solution.
http://msdn.microsoft.com/en-us/libr...g.point3d.aspx

regards
A.G.

On 12/6/2011 7:14 AM, Hex wrote:
> it's my first message here, i have a problem with class Point
> beacause this class is sealed. So i can not derive it
>
> protected l class point3d : Point
> {
> point3d();
>
> } ;
>
> how can do that in other way ?
> i want to use a new struct { int x,y,z } o a new class

Use composition instead of inheritance.

Arne

thank you all