ColorSelectionDialog
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## ColorSelectionDialog

This dialog allows the user to choose a color.

Reference

### Example

Figure 13.3. ColorSelectionDialog

Source Code

File: examplewindow.h

    #ifndef GTKMM_EXAMPLEWINDOW_H
    #define GTKMM_EXAMPLEWINDOW_H

    #include <gtkmm.h>

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

    protected:
      //Signal handlers:
      virtual void on_button_color_set();

      //Child widgets:
      Gtk::VBox m_VBox;
      Gtk::ColorButton m_Button;
      Gtk::DrawingArea m_DrawingArea; //To show the color.

      Gdk::Color m_Color;
    };

    #endif //GTKMM_EXAMPLEWINDOW_H

File: examplewindow.cc

    #include "examplewindow.h"
    #include <iostream>

    ExampleWindow::ExampleWindow()
    {
      set_title("Gtk::ColorButton example");
      set_default_size(200, 200);

      add(m_VBox);

      m_VBox.pack_start(m_Button, Gtk::PACK_SHRINK);
      m_Button.signal_color_set().connect( sigc::mem_fun(*this, &ExampleWindow::on_button_color_set) );

      //Set start color:
      m_Color.set_red(0);
      m_Color.set_blue(65535);
      m_Color.set_green(0);
      m_Button.set_color(m_Color);

      m_DrawingArea.modify_bg(Gtk::STATE_NORMAL, m_Color);

      m_VBox.pack_start(m_DrawingArea);

      show_all_children();
    }

    ExampleWindow::~ExampleWindow()
    {
    }

    void ExampleWindow::on_button_color_set()
    {
      //Store the chosen color, and show it:
      m_Color = m_Button.get_color();
      m_DrawingArea.modify_bg(Gtk::STATE_NORMAL, m_Color);
    }

File: main.cc

    #include <gtkmm/main.h>
    #include "examplewindow.h"

    int main(int argc, char *argv[])
    {
      Gtk::Main kit(argc, argv);

      ExampleWindow window;
      Gtk::Main::run(window); //Shows the window and returns when it is closed.

      return 0;
    }

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