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c++ - Digital Mars and Fltk

reply "Karol Gottan" <gottan op.pl> writes:
Hi,

I am trying to cmpile Fltk GUI (www.fltk.org)
using DMC, but I am getting some errors.

One of them is a problem with overloaded
functions like :

-------
src\Fl_Pixmap.cxx(52) : Error: ambiguous reference to symbol
Had: fl_measure_pixmap(char *const *, int &, int &)
and: fl_measure_pixmap(char const *const *, int &, int &)
    fl_draw_pixmap(data(), 0, 0, FL_BLACK);
-------

and

-------
src\Fl_Pixmap.cxx(87) : Error: ambiguous reference to symbol
Had: fl_draw_pixmap(char *const *, int, int, int enum Fl_Color)
and: fl_draw_pixmap(char const *const *, int, int, int enum Fl_Color)
-------

Is there a quick solution for this kind of errors ?
(I am rather lammer in C++).

-- 

Karol Gottan
Jan 26 2004
parent reply "Walter" <walter digitalmars.com> writes:
"Karol Gottan" <gottan op.pl> wrote in message
news:bv2v0h$937$1 digitaldaemon.com...

 Hi,

 I am trying to cmpile Fltk GUI (www.fltk.org)
 using DMC, but I am getting some errors.

 One of them is a problem with overloaded
 functions like :

 -------
 src\Fl_Pixmap.cxx(52) : Error: ambiguous reference to symbol
 Had: fl_measure_pixmap(char *const *, int &, int &)
 and: fl_measure_pixmap(char const *const *, int &, int &)
     fl_draw_pixmap(data(), 0, 0, FL_BLACK);
 -------



Try casting the arguments to the types for the particular function you want
to call.
Jan 26 2004
parent reply "Karol Gottan" <gottan op.pl> writes:
<walter digitalmars.com> wrote :

 "Karol Gottan" <gottan op.pl> wrote in message
 news:bv2v0h$937$1 digitaldaemon.com...

 Hi,

 I am trying to cmpile Fltk GUI (www.fltk.org)
 using DMC, but I am getting some errors.

 One of them is a problem with overloaded
 functions like :

 -------
 src\Fl_Pixmap.cxx(52) : Error: ambiguous reference to symbol
 Had: fl_measure_pixmap(char *const *, int &, int &)
 and: fl_measure_pixmap(char const *const *, int &, int &)
     fl_draw_pixmap(data(), 0, 0, FL_BLACK);
 -------



 Try casting the arguments to the types for the particular
 function you want to call.



That was the first step I tried.
But it does not help with DMC.
Not with this overloading type :

int draw(      char* const* data, int x, int y);
int draw(const char* const* data, int x, int y);

In this case casting does not work in DMC.

--

Karol
Jan 27 2004
parent reply "Walter" <walter digitalmars.com> writes:
"Karol Gottan" <gottan op.pl> wrote in message
news:bv6fn2$jo$1 digitaldaemon.com...

 <walter digitalmars.com> wrote :

 "Karol Gottan" <gottan op.pl> wrote in message
 news:bv2v0h$937$1 digitaldaemon.com...

 Hi,

 I am trying to cmpile Fltk GUI (www.fltk.org)
 using DMC, but I am getting some errors.

 One of them is a problem with overloaded
 functions like :

 -------
 src\Fl_Pixmap.cxx(52) : Error: ambiguous reference to symbol
 Had: fl_measure_pixmap(char *const *, int &, int &)
 and: fl_measure_pixmap(char const *const *, int &, int &)
     fl_draw_pixmap(data(), 0, 0, FL_BLACK);
 -------



 Try casting the arguments to the types for the particular
 function you want to call.



 That was the first step I tried.
 But it does not help with DMC.
 Not with this overloading type :

 int draw(      char* const* data, int x, int y);
 int draw(const char* const* data, int x, int y);

 In this case casting does not work in DMC.



Can you give a complete code snippet illustrating the problem?
Jan 27 2004
parent reply "Karol Gottan" <gottan op.pl> writes:
Walter wrote:


 Can you give a complete code snippet illustrating the problem?



Something like this one :

----------------------------------------------
#include <stdio.h>

class foo {
public:
  explicit foo(      char * const * D) {};
  explicit foo(const char * const * D) {};

  int draw(      char * const * data, int x, int y);
  int draw(const char * const * data, int x, int y);
};

int foo::draw(char * const * data, int x, int y) {
  return draw( (const char * const * )data, x, y );
}

int foo::draw(const char * const * data, int x, int y) {
  return 1;
}

static const char *broken[] =
{
  "16 24 4 1",
  "  c #000000",
  NULL
};

static foo bar( (const char * const * )broken );

int main(int argv, char **arvc) {
  bar.draw( broken, 0, 0 );
  return 0;
}

----------------------------------------------

--

Karol
Jan 28 2004
parent reply "Walter" <walter digitalmars.com> writes:
Ok. To work around, I suggest commenting out the declaration not needed.
Thanks, -Walter
Jan 28 2004
parent "Karol Gottan" <gottan op.pl> writes:
<walter digitalmars.com> wrote :

 Ok. To work around, I suggest commenting out the
 declaration not needed.



That's what I did. And I have to say I am after a
successfull compilation of Fltk now. Works great.

Many thanks.

--

Karol
Jan 28 2004