Re: [Swig-user] bool pass by refernce

[David P. <dpi...@me...>]

By default, Swig does not support passing by reference. Personally, I add this ability with the following SWIG code (ABOVE your function declaration):

%include "typemaps.i"

%define %standard_byref_params(TYPE)
       %apply TYPE& INOUT { TYPE& };
       %apply TYPE& OUTPUT { TYPE& result };
%enddef

%standard_byref_params(bool)
%standard_byref_params(signed char)
%standard_byref_params(unsigned char)
%standard_byref_params(short)
%standard_byref_params(unsigned short)
%standard_byref_params(int)
%standard_byref_params(unsigned int)
%standard_byref_params(long)
%standard_byref_params(unsigned long)
%standard_byref_params(long long)
%standard_byref_params(unsigned long long)
%standard_byref_params(float)
%standard_byref_params(double)

This code uses "ref" parameters for primitive types passed by reference "&" in C++, and "out" parameters if the argument is named "result".

From: sus...@gm... [mailto:sus...@gm...]
Sent: Monday, December 13, 2010 6:39 AM
To: swi...@li...
Subject: [Swig-user] bool pass by refernce

Hi,

I'm new to SWIG.

I have a simple c++ function what I want to wrap in to C#

void Hello_Test(bool &var);

for this SWIG is generating for C# code

void Hello_Test(SWIGTYPE_p_bool var) ;

but i'm expecting :

void Hello_Test(ref var) ;

Can some one please provides a simple example of how to achieve this.

Thanks