Changing a gtkmm label through a signal possible?

[Markus Pitha]

Hello,

I have a window containing a table with some (dynamically created)
buttons. I want to change the buttons, when they are clicked, but with
dynamically created buttons, this issue seems to be not that easy.
Look at this methods:
void GUIAdjazenzmatr ix::createTable () {

for(int i = 0; i < knotenAnzahl; i++) {
for(int j = 0; j < knotenAnzahl; j++) {
Gtk::Button* pButton = Gtk::manage(new Gtk::Button(" 0 "));
table.attach(*p Button, j, j+1, i, i+1);

pButton->signal_clicked ().connect(sigc ::bind<int, int>
(sigc::mem_fun( *this,
&GUIAdjazenzmat rix::onButtonCl ick), j, i));
}
}
}

void GUIAdjazenzmatr ix::onButtonCli ck(int j, int i) {

//some code

}

I tried to force a Gtk::Button pointer through this signal, but I
couldn't manage it.
When I try something like this:

void GUIAdjazenzmatr ix::createTable () {

for(int i = 0; i < knotenAnzahl; i++) {
for(int j = 0; j < knotenAnzahl; j++) {
Gtk::Button* pButton = Gtk::manage(new Gtk::Button(" 0 "));
table.attach(*p Button, j, j+1, i, i+1);

pButton->signal_clicked ().connect(sigc ::bind<int, int,
Gtk::Button*>
(sigc::mem_fun( *this,
&GUIAdjazenzmat rix::onButtonCl ick), j, i, pButton));
}
}
}

...I get these errors:
$ g++ GUI*.cpp Main.cpp -o Main `pkg-config gtkmm-2.4 --libs --cflags`
/usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h : In member
function »typename
sigc::adaptor_f unctor<T_functo r>::deduce_resu lt_type<T_arg1, T_arg2,
T_arg3, void, void, void, void>::type
sigc::adaptor_f unctor<T_functo r>::operator()( T_arg1, T_arg2, T_arg3)
const [with T_arg1 = int&, T_arg2 = int&, T_arg3 = Gtk::Button*&,
T_functor = sigc::bound_mem _functor2<void, GUIAdjazenzmatr ix, int, int>]«:
/usr/include/sigc++-2.0/sigc++/adaptors/bind.h:1511: instantiated from
»typename sigc::adapts<T_ functor>::adapt or_type::result _type
sigc::bind_func tor<-0x000000001, T_functor, T_type1, T_type2, T_type3,
sigc::nil, sigc::nil, sigc::nil, sigc::nil>::ope rator()() [with
T_functor = sigc::bound_mem _functor2<void, GUIAdjazenzmatr ix, int, int>,
T_type1 = int, T_type2 = int, T_type3 = Gtk::Button*]«
/usr/include/sigc++-2.0/sigc++/functors/slot.h:103: instantiated from
»static T_return sigc::internal: :slot_call0<T_f unctor,
T_return>::call _it(sigc::inter nal::slot_rep*) [with T_functor =
sigc::bind_func tor<-0x000000001, sigc::bound_mem _functor2<void,
GUIAdjazenzmatr ix, int, int>, int, int, Gtk::Button*, sigc::nil,
sigc::nil, sigc::nil, sigc::nil>, T_return = void]«
/usr/include/sigc++-2.0/sigc++/functors/slot.h:110: instantiated from
»static void* (* sigc::internal: :slot_call0<T_f unctor,
T_return>::addr ess())(void*) [with T_functor =
sigc::bind_func tor<-0x000000001, sigc::bound_mem _functor2<void,
GUIAdjazenzmatr ix, int, int>, int, int, Gtk::Button*, sigc::nil,
sigc::nil, sigc::nil, sigc::nil>, T_return = void]«
/usr/include/sigc++-2.0/sigc++/functors/slot.h:454: instantiated from
»sigc::slot0<T_ return>::slot0( const T_functor&) [with T_functor =
sigc::bind_func tor<-0x000000001, sigc::bound_mem _functor2<void,
GUIAdjazenzmatr ix, int, int>, int, int, Gtk::Button*, sigc::nil,
sigc::nil, sigc::nil, sigc::nil>, T_return = void]«
/usr/include/sigc++-2.0/sigc++/functors/slot.h:1130: instantiated from
»sigc::slot<T_r eturn, sigc::nil, sigc::nil, sigc::nil, sigc::nil,
sigc::nil, sigc::nil, sigc::nil>::slo t(const T_functor&) [with T_functor
= sigc::bind_func tor<-0x000000001, sigc::bound_mem _functor2<void,
GUIAdjazenzmatr ix, int, int>, int, int, Gtk::Button*, sigc::nil,
sigc::nil, sigc::nil, sigc::nil>, T_return = void]«
GUIAdjazenzmatr ix.cpp:27: instantiated from here
/usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h :123: Fehler:

....and so on..

What can i do?
Markus

[Thomas J. Gritzan]

Markus Pitha wrote:

I have a window containing a table with some (dynamically created)
buttons. I want to change the buttons, when they are clicked, but with
dynamically created buttons, this issue seems to be not that easy.
Look at this methods:
void GUIAdjazenzmatr ix::createTable () {

for(int i = 0; i < knotenAnzahl; i++) {
for(int j = 0; j < knotenAnzahl; j++) {
Gtk::Button* pButton = Gtk::manage(new Gtk::Button(" 0 "));
table.attach(*p Button, j, j+1, i, i+1);

pButton->signal_clicked ().connect(sigc ::bind<int, int>
(sigc::mem_fun( *this,
&GUIAdjazenzmat rix::onButtonCl ick), j, i));
}
}
}

void GUIAdjazenzmatr ix::onButtonCli ck(int j, int i) {

[...]

I tried to force a Gtk::Button pointer through this signal, but I
couldn't manage it.
When I try something like this:

void GUIAdjazenzmatr ix::createTable () {

[...]

pButton->signal_clicked ().connect(sigc ::bind<int, int,
Gtk::Button*>
(sigc::mem_fun( *this,
&GUIAdjazenzmat rix::onButtonCl ick), j, i, pButton));
}
}
}

..I get these errors:

[...]

Sorry, not enough information.
I think you snipped just before the important part of the error message.

Some questions:
1) Did you read the error messages?
2) Did you change GUIAdjazenzmatr ix::onButtonCli ck also?
3) Did you change the signature of onButtonClick in the class declaration?
4) Did you ask in a place where the GTK library is on-topic?

Read here:
http://www.parashift.com/c++-faq-lit...t.html#faq-5.9

--
Thomas
http://www.netmeister.org/news/learn2quote.html

[Markus Pitha]

Thomas J. Gritzan wrote:

Sorry, not enough information.
I think you snipped just before the important part of the error message.

I didn't post it because I just wanted to demonstrate which errors
appear. Sometime I also get a "Fehler: Syntaxfehler in
Templateargumen tliste", depending on my tries.
When I check out
http://libsigc.sourceforge.net/libsi...oup__bind.html
there are a lot of adaptors with different amounts of undefined types,
so how does it come that my 3-argument-expression does not fit.

Some questions:
1) Did you read the error messages?

Yes, and with this link above I tried to find a solution. Unfortunately,
I don't know what these "nil"s in the parameter list are.

2) Did you change GUIAdjazenzmatr ix::onButtonCli ck also?

Sure, but then I only changed just the first method over and over again.
If there are no errors anymore I concentrate on the second method.

3) Did you change the signature of onButtonClick in the class declaration?

I don't exactly know what you mean now?

4) Did you ask in a place where the GTK library is on-topic?

I think my question is probably more a c++ problem than a gtk problem.
Moreover there are no gtk groups. There is indeed
comp.os.linux.d evelopment.apps but this group gets only few hits a day
apart from the fact that it's no gtk group either.
But if you recommend one to my I would be glad.

Markus