![GTK+ hello world window
/*hello.c */
#include <gtk/gtk.h>
int main(int argc, char *argv[ ])
{
GtkWidget *window;
gtk_init (&argc, &argv); /* Initialization */
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_title(GTK_WINDOW(window),"Hello World");
gtk_widget_show(window);
gtk_main (); /* Main Event loop */
return 0;
}](https://image.slidesharecdn.com/basicsofgtkilugc-101211135333-phpapp02/85/Basics-of-gtk_ilugc-7-320.jpg)
Basics of gtk_ilugc
- 1. Basic GTK+ & GUI Designing K. Karthikeyan CDAC, Chennai
- 2. Introduction ● Linux Desktop Environments – GNOME, KDE – KDE's dependency on Qt drives towards GNOME ● GIMP - GNU Image Manipulation Program – Peter Mattis, Spencer Kimball, to replace motif – GIMP Tool Kit(GTK) – Object Oriented and renamed as GTK+
- 3. GTK+ Cross platform graphical tool kit, used by GNOME applications. Part of GNU project, LGPL Written in 'C' and Language Bindings for – C++ gtkmm – Python pygtk – PHP php-gtk etc., Latest stable version gtk+ 2.22.0
- 4. GTK+ and Supporting Libraries Glib – General Purpose utility library, Provides Cross platform interfaces, Abstract Data types Gobject – Provides Data types, signals, Object oriented Interfaces GDK – Graphics Library for X window system GdkPixbuf – provides functions for client side image manipulation Pango – Font and layout rendering ATK – Accessibility Tool Kit
- 5. GTK+ Widget Hierarchy GtkObject GtkWidget GtkContainer GtkBin GtkWindow
- 6. What we need.. ● GCC compiler ● Editor ● Gtk+ and its dependent packages – libgtk2.0-dev, libgtk2.0-0, libglib2.0-dev, ... ● Pkg-config package ● How to check ● $pkg-config - -cflags gtk+-2.0 ● $pkg-config - -libs gtk+-2.0
- 7. GTK+ hello world window /*hello.c */ #include <gtk/gtk.h> int main(int argc, char *argv[ ]) { GtkWidget *window; gtk_init (&argc, &argv); /* Initialization */ window = gtk_window_new (GTK_WINDOW_TOPLEVEL); gtk_window_set_title(GTK_WINDOW(window),"Hello World"); gtk_widget_show(window); gtk_main (); /* Main Event loop */ return 0; }
- 8. How to compile & Run “hello.c” ● To Compile “gcc -Wall program.c -o executable_name `pkg- config --cflags --libs gtk+-2.0` “ -Wall - Enable all types of compiler warnings ● To Run ./executable_name
- 10. Signal Connection & Callback function ● Connecting a signal with a function g_signal_connect(gpointer, “signal name”, callback_handler, gpointer); ● Callback function format return_type callback_function(GtkWidget *, ... ,gpointer)
- 11. Basic Widgets and Initialization ● Label - gtk_label_new() ● Buttons - gtk_button_new() and more ● Box - gtk_hbox_new(), gtk_vbox_new() ● Pane - gtk_hpane_new(), gtk_vpane_new() ● Table - gtk_table_new() ● Expander - gtk_expander_new() and more ● Notebooks- gtk_note_book_new()
- 12. Basic Widgets and Initialization ● Stock_Buttons ● Toggle Button – 1. Toggle Button 2. Radio button 3. Check button ● Text Entry – 1. Text Entry 2. Spin button ● Scale – 1. Horizontal scale 2. Vertical scale
- 13. Some Important functions ● GtkWidget ● gtk_widget_set_size_request ● gtk_widget_grab_focus ● gtk_widget_set_sensitive ● gtk_widget_destroy ● GtkWindow ● gtk_window_set_default_size ● gtk_window_move ● gtk_window_resizable
- 14. Resources & References ● Books ● Foundations of GTK+ Development – by Andrew Krause ● The Offical GNOME 2 Developer's Guide -by Matthias Warkus ● IRC Channels ● Server --> irc.gnome.org ● Channels – #gtk+, #gnome-india, #gnome-love, #nosip ... ● Websites library.gnome.org, en.wikipedia.org, ...
- 15. Thank You.... ! [email protected] [email protected] To Tweet : @karthik2u