Linux(Ubuntu) GTK+3(2) GUI Programming - 리눅스(우분투) GUI 프로그래밍

리눅스(우분투)에서 GTK+3를 이용해 GUI 프로그래밍을 해 보자.

 

GTK+3를 설치한다.

 

단순한 window를 만드는 예제 소스를 입력한다.

 

컴파일(빌드)하고 실행하면 창이 나타나다. 단순한 창이지만 이동, 종료등의 모든 기본적인 기능을 갖고 있다.

 

 

#include <gtk/gtk.h>
 
/* This is a callback function. The data arguments are ignored
 * in this example. More on callbacks below. */
static void hello( GtkWidget *widget,
                   gpointer   data )
{
    g_print ("Hello World\n");
}
 
static gboolean delete_event( GtkWidget *widget,
                              GdkEvent  *event,
                              gpointer   data )
{
    /* If you return FALSE in the "delete-event" signal handler,
     * GTK will emit the "destroy" signal. Returning TRUE means
     * you don't want the window to be destroyed.
     * This is useful for popping up 'are you sure you want to quit?'
     * type dialogs. */
 
    g_print ("delete event occurred\n");
 
    /* Change TRUE to FALSE and the main window will be destroyed with
     * a "delete-event". */
 
    return TRUE;
}
 
/* Another callback */
static void destroy( GtkWidget *widget,
                     gpointer   data )
{
    gtk_main_quit ();
}
 
int main( int   argc,
          char *argv[] )
{
    /* GtkWidget is the storage type for widgets */
    GtkWidget *window;
    GtkWidget *button;
    
    /* This is called in all GTK applications. Arguments are parsed
     * from the command line and are returned to the application. */
    gtk_init (&argc, &argv);
    
    /* create a new window */
    window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
    
    /* When the window is given the "delete-event" signal (this is given
     * by the window manager, usually by the "close" option, or on the
     * titlebar), we ask it to call the delete_event () function
     * as defined above. The data passed to the callback
     * function is NULL and is ignored in the callback function. */
    g_signal_connect (window, "delete-event",
              G_CALLBACK (delete_event), NULL);
    
    /* Here we connect the "destroy" event to a signal handler.  
     * This event occurs when we call gtk_widget_destroy() on the window,
     * or if we return FALSE in the "delete-event" callback. */
    g_signal_connect (window, "destroy",
              G_CALLBACK (destroy), NULL);
    
    /* Sets the border width of the window. */
    gtk_container_set_border_width (GTK_CONTAINER (window), 10);
    
    /* Creates a new button with the label "Hello World". */
    button = gtk_button_new_with_label ("Hello World");
    
    /* When the button receives the "clicked" signal, it will call the
     * function hello() passing it NULL as its argument.  The hello()
     * function is defined above. */
    g_signal_connect (button, "clicked",
              G_CALLBACK (hello), NULL);
    
    /* This will cause the window to be destroyed by calling
     * gtk_widget_destroy(window) when "clicked".  Again, the destroy
     * signal could come from here, or the window manager. */
    g_signal_connect_swapped (button, "clicked",
                  G_CALLBACK (gtk_widget_destroy),
                              window);
    
    /* This packs the button into the window (a gtk container). */
    gtk_container_add (GTK_CONTAINER (window), button);
    
    /* The final step is to display this newly created widget. */
    gtk_widget_show (button);
    
    /* and the window */
    gtk_widget_show (window);
    
    /* All GTK applications must have a gtk_main(). Control ends here
     * and waits for an event to occur (like a key press or
     * mouse event). */
    gtk_main ();
    
    return 0;
}

GTK+2 스타일의 예제 소스를 입력해 보자.

 

GTK+2 스타일의 소스를 빌드해도 문제 없다. Hello World 버튼을 클릭한다.

 

터미널 출력까지 잘 된다.