mirror of
https://gitlab.gnome.org/GNOME/gtk.git
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1bfcf9ba16
Sat Aug 24 12:46:37 BST 2002 Tony Gale <gale@gtk.org>
* docs/tutorial/gtk-tut.sgml, examples/*:
update g_connect_signal usage
* docs/faq/gtk-faq.html: spelling/grammar fixes
95 lines
3.0 KiB
C
95 lines
3.0 KiB
C
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#include <gtk/gtk.h>
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/* Our new improved callback. The data passed to this function
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* is printed to stdout. */
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void callback( GtkWidget *widget,
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gpointer data )
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{
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g_print ("Hello again - %s was pressed\n", (gchar *) data);
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}
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/* another callback */
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gint delete_event( GtkWidget *widget,
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GdkEvent *event,
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gpointer data )
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{
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gtk_main_quit ();
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return FALSE;
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}
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int main( int argc,
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char *argv[] )
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{
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/* GtkWidget is the storage type for widgets */
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GtkWidget *window;
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GtkWidget *button;
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GtkWidget *box1;
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/* This is called in all GTK applications. Arguments are parsed
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* from the command line and are returned to the application. */
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gtk_init (&argc, &argv);
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/* Create a new window */
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window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
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/* This is a new call, which just sets the title of our
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* new window to "Hello Buttons!" */
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gtk_window_set_title (GTK_WINDOW (window), "Hello Buttons!");
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/* Here we just set a handler for delete_event that immediately
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* exits GTK. */
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g_signal_connect (G_OBJECT (window), "delete_event",
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G_CALLBACK (delete_event), NULL);
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/* Sets the border width of the window. */
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gtk_container_set_border_width (GTK_CONTAINER (window), 10);
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/* We create a box to pack widgets into. This is described in detail
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* in the "packing" section. The box is not really visible, it
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* is just used as a tool to arrange widgets. */
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box1 = gtk_hbox_new (FALSE, 0);
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/* Put the box into the main window. */
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gtk_container_add (GTK_CONTAINER (window), box1);
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/* Creates a new button with the label "Button 1". */
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button = gtk_button_new_with_label ("Button 1");
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/* Now when the button is clicked, we call the "callback" function
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* with a pointer to "button 1" as its argument */
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g_signal_connect (G_OBJECT (button), "clicked",
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G_CALLBACK (callback), (gpointer) "button 1");
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/* Instead of gtk_container_add, we pack this button into the invisible
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* box, which has been packed into the window. */
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gtk_box_pack_start (GTK_BOX(box1), button, TRUE, TRUE, 0);
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/* Always remember this step, this tells GTK that our preparation for
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* this button is complete, and it can now be displayed. */
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gtk_widget_show (button);
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/* Do these same steps again to create a second button */
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button = gtk_button_new_with_label ("Button 2");
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/* Call the same callback function with a different argument,
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* passing a pointer to "button 2" instead. */
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g_signal_connect (G_OBJECT (button), "clicked",
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G_CALLBACK (callback), (gpointer) "button 2");
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gtk_box_pack_start(GTK_BOX (box1), button, TRUE, TRUE, 0);
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/* The order in which we show the buttons is not really important, but I
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* recommend showing the window last, so it all pops up at once. */
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gtk_widget_show (button);
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gtk_widget_show (box1);
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gtk_widget_show (window);
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/* Rest in gtk_main and wait for the fun to begin! */
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gtk_main ();
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return 0;
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}
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