Question

Is there any body can confirm the description here is true? My experience is that I can not use Example::Vector.new at all.

C/C++ structs are wrapped as Ruby
classes, with accessor methods (i.e.
“getters” and “setters”) for all of
the struct members. For example, this
struct declaration:

struct Vector {
 double x, y;
};

gets wrapped as a Vector class, with
Ruby instance methods x, x=, y and y=.
These methods can be used to access
structure data from Ruby as follows:

$ irb
irb(main):001:0> require 'Example'
true
irb(main):002:0> f = Example::Vector.new
#<Example::Vector:0x4020b268>
irb(main):003:0> f.x = 10
nil
irb(main):004:0> f.x
10.0

Answer 1

Solved. I should also need add the type definition in the example.i file ,just include the .h is not enough.