Re: sigc undefined?

[Murray Cumming <murrayc murrayc com>]

On Sat, 2006-05-13 at 13:28 -0700, Joe Van Dyk wrote:
> I guess I'm doing something stupid, but dunno what it could be.
> Running this on Ubuntu Dapper.  Why isn't sigc not declared?  Did I
> not install something correctly?
> 
> joe laptop:~/projects/gtkmm/hello_world$ g++ main.cpp `pkg-config
> gtkmm-2.0 sigc++-2.0 --cflags --libs ` -o hello

Your example uses the gtkmm-2.4 API. But you are linking (or attempting
to link) to the gtkmm-2.0 API.

In neither case should you need to also specify libsigc++.
 
> main.cpp: In constructor 'Hello_World::Hello_World()':
> main.cpp:20: error: 'sigc' has not been declared
> main.cpp:20: error: 'mem_fun' was not declared in this scope
> 
> 
> joe laptop:~/projects/gtkmm/hello_world$ cat main.cpp
> 
> #include <gtkmm/main.h>
> #include <gtkmm/button.h>
> #include <gtkmm/window.h>
> #include <sigc++/sigc++.h>
> #include <iostream>
> 
> class Hello_World : public Gtk::Window
> {
>   public:
>     Hello_World();
>     void on_button_clicked();
>     Gtk::Button button_;
> };
> 
> Hello_World::Hello_World()
>   : button_("Hello World")
> {
>   set_border_width(10);
>   button_.signal_clicked().connect(sigc::mem_fun(*this,
> &Hello_World::on_button_clicked));
>   add(button_);
>   show_all();
> }
> 
> void Hello_World::on_button_clicked()
> {
>   std::cout << "Hello World" << std::endl;
> }
> 
> int main(int argc, char *argv[])
> {
>   Gtk::Main kit(argc, argv);
>   Hello_World hello;
>   Gtk::Main::run(hello);
> }
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-- 
Murray Cumming
murrayc murrayc com
www.murrayc.com
www.openismus.com