Attachment 28183 Details for Bug 23034 – GTK test program displaying an animated cursor.

GTK test program displaying an animated cursor.

busycursor.c (text/plain), 3.22 KB, created by Peter Hutterer on 2009-07-29 23:55:19 UTC

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Creator: Peter Hutterer

Created: 2009-07-29 23:55:19 UTC

Size: 3.22 KB

patch

obsolete

>/* gcc -o busycursor `pkg-config --cflags --libs gtk+-2.0` busycursor.c */
>#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");
>
>    GdkCursor *busy_cursor = gdk_cursor_new(GDK_WATCH);
>    gdk_window_set_cursor(GTK_WIDGET(widget)->window, busy_cursor);
>    gdk_flush();
>
>}
>
>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 (G_OBJECT (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 (G_OBJECT (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 (G_OBJECT (button), "clicked",
>                      G_CALLBACK (hello), NULL);
>
>    /* 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;
>}

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Attachments on bug 23034: 28183 | 28184 | 28214

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