make wxGo error.

[gofan]

$ make -f Makefile.windows
g++ -m32 -I . -g -fPIC -O2 -o obj/wx_wrapcxx.o -c obj/wx_wrap.cxx -I/extra/wx/
lib/wx/include/msw-unicode-release-2.8 -I/extra/wx/include/wx-2.8 -D_IODBC -DWX
USINGDLL -D__WXMSW_ -mthreads
obj/wx_wrap.cxx:1:0: warning: -fPIC ignored for target (all code is position in
dependent)
obj/wx_wrap.cxx: In function 'void wrap_wxGetOsDescription(void)':
obj/wx_wrap.cxx:2299:79: error: cannot convert 'const wxChar' to 'const char*'
for argument '1' to 'gostring swig_makegostring(const char, size_t)'
obj/wx_wrap.cxx: In function 'void wrap_wxCommandEvent_GetString(void)':
obj/wx_wrap.cxx:5465:79: error: cannot convert 'const wxChar' to 'const char'
for argument '1' to 'gostring swig_makegostring(const char, size_t)'
obj/wx_wrap.cxx: In function 'void wrap_wxNotifyEvent_GetString(void)':
obj/wx_wrap.cxx:5704:79: error: cannot convert 'const wxChar' to 'const char'
for argument '1' to 'gostring swig_makegostring(const char, size_t)'
obj/wx_wrap.cxx: In function 'void wrap_wxTreeEvent_GetLabel(void)':
obj/wx_wrap.cxx:5997:75: error: cannot convert 'const wxChar' to 'const char'
for argument '1' to 'gostring swig_makegostring(const char, size_t)'
obj/wx_wrap.cxx: In function 'void wrap_wxTreeEvent_GetToolTip(void)':
obj/wx_wrap.cxx:6017:79: error: cannot convert 'const wxChar' to 'const char'
for argument '1' to 'gostring swig_makegostring(const char, size_t)'
obj/wx_wrap.cxx: In function 'void wrap_wxTreeEvent_GetString(void)':
obj/wx_wrap.cxx:6148:79: error: cannot convert 'const wxChar' to 'const char'
obj/wx_wrap.cxx:6148:79: error: cannot convert 'const wxChar' to 'const char'
for argument '1' to 'gostring swig_makegostring(const char, size_t)'
obj/wx_wrap.cxx: In function 'void wrap_wxMenu_Append__SWIG_0(void)':
obj/wx_wrap.cxx:6851:51: error: call of overloaded 'wxString(char&, int&)' is
ambiguous
D:/MinGW/msys/1.0/extra/wx/include/wx-2.8/wx/string.h:1283:3: note: candidates a
re: wxString::wxString(const void, const void)
D:/MinGW/msys/1.0/extra/wx/include/wx-2.8/wx/string.h:694:3: note:
wxString::wxString(size_t, wxChar)
D:/MinGW/msys/1.0/extra/wx/include/wx-2.8/wx/string.h:692:3: note:
wxString::wxString(wxChar, size_t)
obj/wx_wrap.cxx:6855:51: error: call of overloaded 'wxString(char&, int&)' is
ambiguous
D:/make: *** wait: No children. Stop.
make: *** Waiting for unfinished jobs....
make: *** wait: No children. Stop.
CTRL+C

What's the problem?
thanks.

[JeroenD]

I think you did the unicode build of the wxWindows library. I have worked with the ansi build and my compile line looks like:

g++ -m32 -I . -g -fPIC -O2 -o obj/wx_wrapcxx.o -c obj/wx_wrap.cxx -D__WXMSW
-I/c/data/wxWidgets-2.8.11/lib/wx/include/msw-ansi-release-2.8 -I/c/data/wxWidg
ets-2.8.11/include -DWX_PRECOMP
_obj/wx_wrap.cxx:1:0: warning: -fPIC ignored for target (all code is position in
dependent)

It then has no errors.

Feel free to try to get it to work with the unicode build....

[gofan]

go have buildin support for utf8
will be fancy to use unicode version by default?

[JeroenD]

I am not sure but I think by default internal encoding of the unicode build in wxWidgets is not UTF-8 but something like USC-2 or UTF-16.
A Go string is always UTF8.

The SWIG provided _swig_makegostring methods seem to work with UTF-8 only at the moment.

[JeroenD]

In: http://docs.wxwidgets.org/trunk/overview_unicode.html

See the Unicode and the Outside World section.

Maybe you can use some of those functions to improve the wxString typemap in the wx.swigcxx file.

(I do not have an unicode build of wxWidgets at the moment so can not really play with that.