Re: [Swig-user] u"unicode string" as arg of a SWIGed ctor with arg of type std::wstring

[Craig W. <cra...@co...>]

I have no issues with Python 3.2.2 and SWIG 2.0.8. Granted Python 3.x
has significant improvements where unicode is concerned.

Can you create a simpler constructor that takes just a single
std::wstring to really isolate your issue?

On Mon, Oct 8, 2012 at 1:40 PM, Paul Oseidon <p.o...@da...> wrote:
>
> Dear all,
>
> I have impl'ed a C++ class ParameterFloat, that has more than one ctor.
> One of them is
>
> ParameterFloat( double value, double value_min, double value_max,
> std::wstring info, std::wstring dim);
>
> When calling it from Python like so
>
> q = cpp.ParameterFloat( 0., 0., 0., u"", u"")
>
> I get the following error:
>
>
> NotImplementedError: Wrong number or type of arguments for overloaded
> function 'new_ParameterFloat'.
> Possible C/C++ prototypes are:
> ParameterFloat::ParameterFloat()
> ParameterFloat::ParameterFloat(double)
> ParameterFloat::ParameterFloat(double,double,double,std::wstring,std::wstring)
>
>
> This used to work with boost, but doesn't so with SWIG. What do I have
> to tell SWIG to accept the wstring-args?
>
> BTW, the py-code generated by SWIG is this:
>
>
> class ParameterFloat(Parameter):
>      __swig_setmethods__ = {}
>      for _s in [Parameter]:
> __swig_setmethods__.update(getattr(_s,'__swig_setmethods__',{}))
>      __setattr__ = lambda self, name, value: _swig_setattr(self,
> ParameterFloat, name, value)
>      __swig_getmethods__ = {}
>      for _s in [Parameter]:
> __swig_getmethods__.update(getattr(_s,'__swig_getmethods__',{}))
>      __getattr__ = lambda self, name: _swig_getattr(self,
> ParameterFloat, name)
>      __repr__ = _swig_repr
>      def __init__(self, *args):
>          this = _core.new_ParameterFloat(*args)
>          try: self.this.append(this)
>          except: self.this = this
>      __swig_destroy__ = _core.delete_ParameterFloat
>      __del__ = lambda self : None;
>      def __float__(self): return _core.ParameterFloat___float__(self)
>      def is_in_range(self): return _core.ParameterFloat_is_in_range(self)
>      def range(self): return _core.ParameterFloat_range(self)
>      def value(self, *args): return _core.ParameterFloat_value(self, *args)
>      def value_min(self, *args): return
> _core.ParameterFloat_value_min(self, *args)
>      def value_max(self, *args): return
> _core.ParameterFloat_value_max(self, *args)
> ParameterFloat_swigregister = _core.ParameterFloat_swigregister
> ParameterFloat_swigregister(ParameterFloat)
>
>
> The number of args matches, the first 3 args are floats/doubles, so the
> wstrings must be the offending items.
>
> I'm on Arch Linux, Python is of version 2.7.3, SWIG is of version 2.0.8-1.
>
> Kind regards
> Paul
>
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/* Craig W. Wright | Chief Architect | Comet Solutions, Inc. | 505.440.7433 */