Re: clist performance.

[Christian Kreibich <kreibich aciri org>]

Christian Kreibich wrote:

> selection mode, see attached demo program.

Hrm. Sorry.
-- Christian.
________________________________________________________________________
                   International Computer Science Institute, ACIRI Group
                                               mailto:kreibich aciri org

/* example-start clist clist.c */

#include <gtk/gtk.h>

/* User clicked the "Add List" button. */
void button_add_clicked( gpointer data )
{
    int    i;
    gchar *message = "Hello";

    for (i = 0; i < 100000; i++)
      gtk_clist_append((GtkCList *) data, &message);

    return;
}

void button_selectall_clicked( gpointer data )
{
    gtk_clist_select_all( (GtkCList *) data);
    return;
}


int main( int    argc,
          gchar *argv[] )
{                                  
    GtkWidget *window;
    GtkWidget *vbox, *hbox;
    GtkWidget *scrolled_window, *clist;
    GtkWidget *button_add, *button_selectall;

    gtk_init(&argc, &argv);
    
    window=gtk_window_new(GTK_WINDOW_TOPLEVEL);
    gtk_widget_set_usize(GTK_WIDGET(window), 300, 150);

    gtk_window_set_title(GTK_WINDOW(window), "GtkCList Example");
    gtk_signal_connect(GTK_OBJECT(window),
		       "destroy",
		       GTK_SIGNAL_FUNC(gtk_main_quit),
		       NULL);
    
    vbox=gtk_vbox_new(FALSE, 5);
    gtk_container_set_border_width(GTK_CONTAINER(vbox), 5);
    gtk_container_add(GTK_CONTAINER(window), vbox);
    gtk_widget_show(vbox);
    
    /* Create a scrolled window to pack the CList widget into */
    scrolled_window = gtk_scrolled_window_new (NULL, NULL);
    gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_window),
                                    GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS);

    gtk_box_pack_start(GTK_BOX(vbox), scrolled_window, TRUE, TRUE, 0);
    gtk_widget_show (scrolled_window);

    /* Create the CList. For this example we use 2 columns */
    clist = gtk_clist_new(1);

    gtk_clist_set_selection_mode(GTK_CLIST(clist), GTK_SELECTION_MULTIPLE);

    /* It isn't necessary to shadow the border, but it looks nice :) */
    gtk_clist_set_shadow_type (GTK_CLIST(clist), GTK_SHADOW_OUT);

    /* What however is important, is that we set the column widths as
     * they will never be right otherwise. Note that the columns are
     * numbered from 0 and up (to 1 in this case).
     */
    gtk_clist_set_column_width (GTK_CLIST(clist), 0, 150);

    /* Add the CList widget to the vertical box and show it. */
    gtk_container_add(GTK_CONTAINER(scrolled_window), clist);
    gtk_widget_show(clist);

    /* Create the buttons and add them to the window. See the button
     * tutorial for more examples and comments on this.
     */
    hbox = gtk_hbox_new(FALSE, 0);
    gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, TRUE, 0);
    gtk_widget_show(hbox);

    button_add = gtk_button_new_with_label("Add List");
    button_selectall = gtk_button_new_with_label("Select All");

    gtk_box_pack_start(GTK_BOX(hbox), button_add, TRUE, TRUE, 0);
    gtk_box_pack_start(GTK_BOX(hbox), button_selectall, TRUE, TRUE, 0);

    /* Connect our callbacks to the three buttons */
    gtk_signal_connect_object(GTK_OBJECT(button_add), "clicked",
			      GTK_SIGNAL_FUNC(button_add_clicked),
			      (gpointer) clist);
    gtk_signal_connect_object(GTK_OBJECT(button_selectall), "clicked",
			      GTK_SIGNAL_FUNC(button_selectall_clicked),
			      (gpointer) clist);

    gtk_widget_show(button_add);
    gtk_widget_show(button_selectall);

    /* The interface is completely set up so we show the window and
     * enter the gtk_main loop.
     */
    gtk_widget_show(window);
    gtk_main();
    
    return(0);
}
/* example-end */