Re: GtkTreeView only displays one column

[Tony Houghton <h realh co uk>]

In <20060108225206 GA7660 realh co uk>, Tony Houghton wrote:

> I'm trying to use GtkTreeView with GtkListStore to show a list of rows,
> each containing a radio button and a bit of text (file leafname). The
> trouble is I can only get the TreeView to show one column at a time. 

I've distilled my code down to a standalone program. Hopefully now
someone else will easily be able to play with it and see what's wrong.

FWIW I'm using libgtk+ 2.8.6 from Ubuntu Breezy. Same problem on x86 and
x86_64.

#include <gtk/gtk.h>

#define N_ITEMS 10
#define USE_SCROLL 1

static void destroy_handler(GtkObject *o, void *d)
{
    gtk_main_quit();
}

enum {
    Column_Radio,
    Column_Name,
    Column_NColumns
};

static void populate_list(GtkListStore *list)
{
    int n;

    for (n = 0; n < N_ITEMS; ++n)
    {
        GtkTreeIter iter;
        char *s = g_strdup_printf("Item %d", n);

        gtk_list_store_append(list, &iter);
        gtk_list_store_set(list, &iter,
                Column_Radio, n == 1,
                Column_Name, s,
                -1);
        g_free(s);
    }
}

static GtkWidget *create_list_widget(void)
{
    GtkTreeViewColumn *rcolumn, *tcolumn;
    GtkCellRenderer *radio;
    GtkWidget *widget;
    GtkTreeView *tvw;
    GtkListStore *list;

    widget = gtk_tree_view_new();
    tvw = GTK_TREE_VIEW(widget);
    list = gtk_list_store_new(Column_NColumns,
            G_TYPE_BOOLEAN, G_TYPE_STRING);
    gtk_tree_view_set_model(tvw, GTK_TREE_MODEL(list));

    radio = gtk_cell_renderer_toggle_new();
    gtk_cell_renderer_toggle_set_radio(GTK_CELL_RENDERER_TOGGLE(radio), TRUE);
    rcolumn = gtk_tree_view_column_new_with_attributes(
                "Radio",
                radio,
                "active",
                Column_Radio,
                NULL);
    gtk_tree_view_column_set_sizing(rcolumn, GTK_TREE_VIEW_COLUMN_FIXED);
    gtk_tree_view_append_column(tvw, rcolumn);

    tcolumn = gtk_tree_view_column_new_with_attributes(
                "Name",
                gtk_cell_renderer_text_new(),
                "text",
                Column_Name,
                NULL);
    gtk_tree_view_column_set_sizing(tcolumn, GTK_TREE_VIEW_COLUMN_FIXED);
    gtk_tree_view_append_column(tvw, tcolumn);


    gtk_tree_selection_set_mode(gtk_tree_view_get_selection(tvw),
            GTK_SELECTION_BROWSE);
    populate_list(list);
    return widget;
}

int main(int argc, char **argv)
{
    GtkWidget *main_win, *tvw, *scroll;

    gtk_init(&argc, &argv);
    main_win = gtk_window_new(GTK_WINDOW_TOPLEVEL);
    g_signal_connect(main_win, "destroy", G_CALLBACK(destroy_handler), NULL);

    tvw = create_list_widget();

#if defined USE_SCROLL && USE_SCROLL
    scroll = gtk_scrolled_window_new(NULL, NULL);
    gtk_container_add(GTK_CONTAINER(main_win), scroll);
    gtk_container_add(GTK_CONTAINER(scroll), tvw);
#else
    gtk_container_add(GTK_CONTAINER(main_win), tvw);
#endif

    gtk_widget_show_all(main_win);
    gtk_main();
    return 0;
}

-- 
TH * http://www.realh.co.uk