I am new to c++ and to using graphics libraries, so please forgive me if I have made a silly mistake.
I am trying to compile a program that creates a window with one button from an example I found online. This is the error I get when I try to run my make file:
sarah@superawesome:~/gtkexample$ make
g++ -c main.cc
In file included from HelloSarah.h:4:0,
from main.cc:1:
/usr/include/gtkmm-3.0/gtkmm/button.h:7:28: fatal error: glibmm/ustring.h: No such file or directory
compilation terminated.
make: *** [main.o] Error
1
I have installed gtkmm, I can compile and run a single file no problem. I think my issue might be that I didn't install buttons? or that my make file is WAY off. I would really appreciate someone pointing me in the right direction. I have been searching online, but I really don't understand what I'm doing. I was however able to locate this file on my computer: /usr/include/gtkmm-3.0/gtkmm/button.h
Here is my Makefile and my 3 other files:
Makefile:
app: main.o HelloSarah.o
g++ -o app main.o HelloSarah.o
main.o: main.cc HelloSarah.h
g++ -c main.cc
HelloSarah.o: HelloSarah.cc HelloSarah.h
g++ -c HelloSarah.cc
clean:
rm -f *.o app
main.cc:
#include "HelloSarah.h"
#include <gtkmm/application.h>
int main (int argc, char *argv[])
{
Glib::RefPtr<Gtk::Application> app = Gtk::Application::create(argc, argv, "org.gtkmm.example");
HelloSarah hellosarah;
//Shows the window and returns when it is closed.
return app->run(hellosarah);
}
HelloSarah.cc:
#include "HelloSarah.h"
#include <iostream>
HelloSarah::HelloSarah()
: m_button("Hello Sarah") // creates a new button with label "HelloSarah".
{
// Sets the border width of the window.
set_border_width(10);
// When the button receives the "clicked" signal, it will call the
// on_button_clicked() method defined below.
m_button.signal_clicked().connect(sigc::mem_fun(*this,
&HelloSarah::on_button_clicked));
// This packs the button into the Window (a container).
add(m_button);
// The final step is to display this newly created widget...
m_button.show();
}
HelloSarah::~HelloSarah()
{
}
void HelloSarah::on_button_clicked()
{
std::cout << "Hello World" << std::endl;
}
and HelloSarah.h:
#ifndef GTKMM_HELLOSARAH_H
#define GTKMM_HELLOSARAH_H
#include <gtkmm-3.0/gtkmm/button.h>
#include <gtkmm/window.h>
class HelloSarah : public Gtk::Window
{
public:
HelloSarah();
virtual ~HelloSarah();
protected:
//Signal handlers:
void on_button_clicked();
//Member widgets:
Gtk::Button m_button;
};
#endif
