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Button

There are two ways to create a Button. You can specify a label string in the Gtk::Button constructor, or set it later with set_label().

To define an accelerator key for keyboard navigation, place an underscore before one of the label's characters and specify true for the optional mnemonic parameter. For instance: 

Gtk::Button* pButton = new Gtk::Button("_Something", true);

Gtk::Button is also a container so you could put any other widget, such as a Gtk::Image into it.

The Gtk::Button widget has the clicked signal which is emitted when the button is pressed and released.

Reference

6.1.1. Example

This example creates a button with a picture and a label.

Figure 6-1 buttons example

Source Code

File: buttons.h (For use with gtkmm 4)

#ifndef GTKMM_EXAMPLE_BUTTONS_H
#define GTKMM_EXAMPLE_BUTTONS_H

#include <gtkmm/window.h>
#include <gtkmm/button.h>

class Buttons : public Gtk::Window
{
public:
  Buttons();
  virtual ~Buttons();

protected:
  //Signal handlers:
  void on_button_clicked();

  //Child widgets:
  Gtk::Button m_button;
};

#endif //GTKMM_EXAMPLE_BUTTONS_H

File: main.cc (For use with gtkmm 4)

#include "buttons.h"
#include <gtkmm/application.h>

int main(int argc, char *argv[])
{
  auto app = Gtk::Application::create("org.gtkmm.example");

  //Shows the window and returns when it is closed.
  return app->make_window_and_run<Buttons>(argc, argv);
}

File: buttons.cc (For use with gtkmm 4)

#include "buttons.h"
#include <gtkmm/box.h>
#include <gtkmm/image.h>
#include <gtkmm/label.h>
#include <iostream>

Buttons::Buttons()
{
  // This corresponds to Gtk::Bin::add_pixlabel("info.xpm", "cool button") in gtkmm3.
  //Create Image and Label widgets:
  auto pmap = Gtk::make_managed<Gtk::Image>("info.xpm");
  auto label = Gtk::make_managed<Gtk::Label>("cool button");
  label->set_expand(true);

  //Put them in a Box:
  auto hbox = Gtk::make_managed<Gtk::Box>(Gtk::Orientation::HORIZONTAL, 5);
  hbox->append(*pmap);
  hbox->append(*label);

  //And put that Box in the button:
  m_button.set_child(*hbox);

  set_title("Pixmap'd buttons!");

  m_button.signal_clicked().connect( sigc::mem_fun(*this,
              &Buttons::on_button_clicked) );

  m_button.set_margin(10);
  set_child(m_button);
}

Buttons::~Buttons()
{
}

void Buttons::on_button_clicked()
{
  std::cout << "The Button was clicked." << std::endl;
}
Button ToggleButton

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