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// This example illustrates how C++ classes can be used from C# using SWIG.
// The C# class gets mapped onto the C++ class and behaves as if it is a C# class.
using System;
public class runme
{
static void Main()
{
// ----- Object creation -----
Console.WriteLine( "Creating some objects:" );
using (Square s = new Square(10))
using (Circle c = new Circle(10))
{
Console.WriteLine( " Created circle " + c );
Console.WriteLine( " Created square " + s );
// ----- Access a static member -----
Console.WriteLine( "\nA total of " + Shape.nshapes + " shapes were created" );
// ----- Member data access -----
// Notice how we can do this using functions specific to
// the 'Circle' class.
c.x = 20;
c.y = 30;
// Now use the same functions in the base class
Shape shape = s;
shape.x = -10;
shape.y = 5;
Console.WriteLine( "\nHere is their current position:" );
Console.WriteLine( " Circle = (" + c.x + " " + c.y + ")" );
Console.WriteLine( " Square = (" + s.x + " " + s.y + ")" );
// ----- Call some methods -----
Console.WriteLine( "\nHere are some properties of the shapes:" );
Shape[] shapes = {c,s};
// for (int i=0; i<shapes.Size; i++)
for (int i=0; i<2; i++)
{
Console.WriteLine( " " + shapes[i].ToString() );
Console.WriteLine( " area = " + shapes[i].area() );
Console.WriteLine( " perimeter = " + shapes[i].perimeter() );
}
// Notice how the area() and perimeter() functions really
// invoke the appropriate virtual method on each object.
// ----- Delete everything -----
Console.WriteLine( "\nGuess I'll clean up now" );
}
// Note: when this using scope is exited the C# Dispose() methods
// are called which in turn call the C++ destructors
Console.WriteLine( Shape.nshapes + " shapes remain" );
Console.WriteLine( "Goodbye" );
}
}
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