This dialog allows the user to choose a color.
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_clicked(); //Child widgets: Gtk::VBox m_VBox; Gtk::Button 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() : m_Button("Show Dialog") { set_title("Gtk::ColorSelectionDialog example"); set_default_size(200, 200); add(m_VBox); m_VBox.pack_start(m_Button, Gtk::PACK_SHRINK); m_Button.signal_clicked().connect( SigC::slot(*this, &ExampleWindow::on_button_clicked) ); //Set start color: m_Color.set_red(0); m_Color.set_blue(65535); m_Color.set_green(0); m_DrawingArea.modify_bg(Gtk::STATE_NORMAL, m_Color); m_VBox.pack_start(m_DrawingArea); show_all_children(); } ExampleWindow::~ExampleWindow() { } void ExampleWindow::on_button_clicked() { Gtk::ColorSelectionDialog dialog; //Set the current color: Gtk::ColorSelection* pColorSel = dialog.get_colorsel(); pColorSel->set_current_color(m_Color); int result = dialog.run(); //Handle the response: switch(result) { case(Gtk::RESPONSE_OK): { //Store the chosen color, and show it: m_Color = pColorSel->get_current_color(); m_DrawingArea.modify_bg(Gtk::STATE_NORMAL, m_Color); break; } case(Gtk::RESPONSE_CANCEL): { std::cout << "Cancel clicked." << std::endl; break; } default: { std::cout << "Unexpected button clicked." << std::endl; break; } } }
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; }