sorry if my question is stupid but, why does libsigc++ not work for me?
Here is the files I use:
The Header:
...
#include <sigc++/sigc++.h>
namespace dtk
{
typedef enum {
DTK_WDG_HIDED = 0,
DTK_WDG_SHOWN = 1
}wdg_state;
class widget : protected eventReceiver
{
public:
widget();
virtual ~widget();
virtual void draw();
virtual void redraw(int width=0, int height=0);
virtual void show();
virtual void hide();
virtual void dock(IDirectFBSurface& dfb_surface);
virtual IDirectFBSurface* undock();
//Slots
sigc::signal<bool, dtk::widget, void*> onCreate;
sigc::signal<bool, dtk::widget, void*> onDestroy;
sigc::signal<bool, dtk::widget, void*> onDraw;
sigc::signal<bool, dtk::widget, void*> onShow;
sigc::signal<bool, dtk::widget, void*> onHide;
sigc::signal<bool, dtk::widget, void*> onDock;
sigc::signal<bool, dtk::widget, void*> onUndock;
//Actions
//None for the moment
....
The Implementation:
#include "widget.h"
namespace dtk
{
widget::widget()
{
onCreate();
}
widget::~widget()
{
onDestroy();
}
...
And when I try to compile my file, here is the result:
if g++ -DPACKAGE_NAME=\"\" -DPACKAGE_TARNAME=\"\" -DPACKAGE_VERSION=\"\"
-DPACKAGE_STRING=\"\" -DPACKAGE_BUGREPORT=\"\" -DPACKAGE=\"DTK\"
-DVERSION=\"0.0.1\" -I. -I. -D_REENTRANT -I/usr/include/++dfb
-I/usr/include/directfb -I/usr/include/sigc++-2.0
-I/usr/lib/sigc++-2.0/include -DDATADIR=\"/usr/share\" -DPACKAGE=\"DTK\"
-Wall -O2 -pipe -MT widget.o -MD -MP -MF ".deps/widget.Tpo" -c -o widget.o
widget.cpp; \
then mv -f ".deps/widget.Tpo" ".deps/widget.Po"; else rm -f ".deps/widget.Tpo";
exit 1; fi
event.h:31: warning: 'class dtk::eventReceiver' has virtual functions but
non-virtual destructor
widget.cpp: In constructor 'dtk::widget::widget()':
widget.cpp:29: error: no matching function for call to 'sigc::signal<bool,
dtk::widget, void*, sigc::nil, sigc::nil, sigc::nil, sigc::nil,
sigc::nil>::emit()'
/usr/include/sigc++-2.0/sigc++/signal.h:1923: note: candidates are: typename
sigc::internal::signal_emit2<T_return, T_arg1, T_arg2,
T_accumulator>::result_type sigc::signal2<T_return, T_arg1, T_arg2,
T_accumulator>::emit(typename sigc::type_trait<T_derived>::take, typename
sigc::type_trait<T_arg3>::take) const [with T_return = bool, T_arg1 =
dtk::widget, T_arg2 = void*, T_accumulator = sigc::nil]
widget.cpp: In destructor 'virtual dtk::widget::~widget()':
widget.cpp:35: error: no match for call to '(sigc::signal<bool, dtk::widget,
void*, sigc::nil, sigc::nil, sigc::nil, sigc::nil, sigc::nil>)
()'/usr/include/sigc++-2.0/sigc++/signal.h:1927: note: candidates are: typename
sigc::internal::signal_emit2<T_return, T_arg1, T_arg2,
T_accumulator>::result_type sigc::signal2<T_return, T_arg1, T_arg2,
T_accumulator>::operator()(typename sigc::type_trait<T_derived>::take, typename
sigc::type_trait<T_arg3>::take) const [with T_return = bool, T_arg1 =
dtk::widget, T_arg2 = void*, T_accumulator = sigc::nil]
widget.cpp: In member function 'virtual void dtk::widget::draw()':
widget.cpp:42: error: no match for call to '(sigc::signal<bool, dtk::widget,
void*, sigc::nil, sigc::nil, sigc::nil, sigc::nil, sigc::nil>)
()'/usr/include/sigc++-2.0/sigc++/signal.h:1927: note: candidates are: typename
sigc::internal::signal_emit2<T_return, T_arg1, T_arg2,
T_accumulator>::result_type sigc::signal2<T_return, T_arg1, T_arg2,
T_accumulator>::operator()(typename sigc::type_trait<T_derived>::take, typename
sigc::type_trait<T_arg3>::take) const [with T_return = bool, T_arg1 =
dtk::widget, T_arg2 = void*, T_accumulator = sigc::nil]
widget.cpp: In member function 'virtual void dtk::widget::redraw(int, int)':
widget.cpp:49: error: no match for call to '(sigc::signal<bool, dtk::widget,
void*, sigc::nil, sigc::nil, sigc::nil, sigc::nil, sigc::nil>)
()'/usr/include/sigc++-2.0/sigc++/signal.h:1927: note: candidates are: typename
sigc::internal::signal_emit2<T_return, T_arg1, T_arg2,
T_accumulator>::result_type sigc::signal2<T_return, T_arg1, T_arg2,
T_accumulator>::operator()(typename sigc::type_trait<T_derived>::take, typename
sigc::type_trait<T_arg3>::take) const [with T_return = bool, T_arg1 =
dtk::widget, T_arg2 = void*, T_accumulator = sigc::nil]
widget.cpp: In member function 'virtual void dtk::widget::show()':
widget.cpp:56: error: no match for call to '(sigc::signal<bool, dtk::widget,
void*, sigc::nil, sigc::nil, sigc::nil, sigc::nil, sigc::nil>)
()'/usr/include/sigc++-2.0/sigc++/signal.h:1927: note: candidates are: typename
sigc::internal::signal_emit2<T_return, T_arg1, T_arg2,
T_accumulator>::result_type sigc::signal2<T_return, T_arg1, T_arg2,
T_accumulator>::operator()(typename sigc::type_trait<T_derived>::take, typename
sigc::type_trait<T_arg3>::take) const [with T_return = bool, T_arg1 =
dtk::widget, T_arg2 = void*, T_accumulator = sigc::nil]
widget.cpp: In member function 'virtual void dtk::widget::hide()':
widget.cpp:63: error: no match for call to '(sigc::signal<bool, dtk::widget,
void*, sigc::nil, sigc::nil, sigc::nil, sigc::nil, sigc::nil>)
()'/usr/include/sigc++-2.0/sigc++/signal.h:1927: note: candidates are: typename
sigc::internal::signal_emit2<T_return, T_arg1, T_arg2,
T_accumulator>::result_type sigc::signal2<T_return, T_arg1, T_arg2,
T_accumulator>::operator()(typename sigc::type_trait<T_derived>::take, typename
sigc::type_trait<T_arg3>::take) const [with T_return = bool, T_arg1 =
dtk::widget, T_arg2 = void*, T_accumulator = sigc::nil]
widget.cpp: In member function 'virtual void
dtk::widget::dock(IDirectFBSurface&)':
widget.cpp:70: error: cannot convert 'IDirectFBSurface**' to
'IDirectFBSurface*' in assignment
widget.cpp:71: error: no match for call to '(sigc::signal<bool, dtk::widget,
void*, sigc::nil, sigc::nil, sigc::nil, sigc::nil, sigc::nil>)
()'/usr/include/sigc++-2.0/sigc++/signal.h:1927: note: candidates are: typename
sigc::internal::signal_emit2<T_return, T_arg1, T_arg2,
T_accumulator>::result_type sigc::signal2<T_return, T_arg1, T_arg2,
T_accumulator>::operator()(typename sigc::type_trait<T_derived>::take, typename
sigc::type_trait<T_arg3>::take) const [with T_return = bool, T_arg1 =
dtk::widget, T_arg2 = void*, T_accumulator = sigc::nil]
widget.cpp: In member function 'virtual IDirectFBSurface*
dtk::widget::undock()':
widget.cpp:80: error: no match for call to '(sigc::signal<bool, dtk::widget,
void*, sigc::nil, sigc::nil, sigc::nil, sigc::nil, sigc::nil>)
()'/usr/include/sigc++-2.0/sigc++/signal.h:1927: note: candidates are: typename
sigc::internal::signal_emit2<T_return, T_arg1, T_arg2,
T_accumulator>::result_type sigc::signal2<T_return, T_arg1, T_arg2,
T_accumulator>::operator()(typename sigc::type_trait<T_derived>::take, typename
sigc::type_trait<T_arg3>::take) const [with T_return = bool, T_arg1 =
dtk::widget, T_arg2 = void*, T_accumulator = sigc::nil]
make[1]: *** [widget.o] Error 1
Can someone help me?
Many thanks.
Ps: I'm using gcc-4.0.2 on a gentoo box, don't know if it change something
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