Question

我尝试将GTKButton添加到GtkListStore来编辑每行中的数据......按钮没有出现，我收到此错误消息：＆＃34; GLib-GObject-WARNING **：无法设置属性text' of type gchararray＆＃39;来自`GtkButton＆＃39;＆＃34;类型的价值。这是我的代码：

#include <gtk/gtk.h>
GtkTreeModel * create_and_fill_model()
{
GtkListStore  *store;
GtkTreeIter    iter;
store = gtk_list_store_new (9,
                            G_TYPE_STRING,
                            G_TYPE_STRING,
                            G_TYPE_STRING,
                            G_TYPE_STRING,
                            G_TYPE_STRING,
                            G_TYPE_STRING,
                            G_TYPE_UINT,
                            G_TYPE_FLOAT,
                            GTK_TYPE_BUTTON);
gtk_list_store_append (store, &iter);
gtk_list_store_set (store, &iter,
                    0, "A5525654",
                    1, "DFFFCCN",
                    2, "Doe",
                    3, "John",
                    4, "M",
                    5, "casablanca",
                    6, 2014,
                    7, 18.22,
                    8,GTK_BUTTON(gtk_button_new_with_label("EDIT")),
                    -1);
return GTK_TREE_MODEL (store);
}
GtkWidget * create_view_and_model()
{
GtkCellRenderer     *renderer;
GtkTreeModel        *model;
GtkWidget           *view;

view = gtk_tree_view_new ();
char colonne[9][16] =
{
    "CIN",
    "CNE",
    "Nom",
    "Prenom",
    "Sexe",
    "Etablissement",
    "Annee Obt",
    "Note Gener",
    "Edit"
};
int i;
for(i=0; i<9; i++)
{
    renderer = gtk_cell_renderer_text_new ();
    gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (view),
            -1,
            colonne[i],
            renderer,
            "text", i,
            NULL);
}
model = create_and_fill_model ();
gtk_tree_view_set_model (GTK_TREE_VIEW (view), model);
g_object_unref (model);
return view;
}
int main (int argc, char **argv)
{
GtkWidget *window;
GtkWidget *view;
gtk_init (&argc, &argv);
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
g_signal_connect (window, "delete_event", gtk_main_quit, NULL);
view = create_view_and_model ();
gtk_container_add (GTK_CONTAINER (window), view);
gtk_widget_show_all (window);
gtk_main ();
return 0;
}

Answer 1

有效的源代码：

#include <gtk/gtk.h>

GtkTreeModel * create_and_fill_model()
{
GtkListStore  *store;
GdkPixbuf     *icon;
GError        *error = NULL;
GtkTreeIter    iter;
store = gtk_list_store_new (9,
                            G_TYPE_STRING,
                            G_TYPE_STRING,
                            G_TYPE_STRING,
                            G_TYPE_STRING,
                            G_TYPE_STRING,
                            G_TYPE_STRING,
                            G_TYPE_UINT,
                            G_TYPE_FLOAT,
                            GDK_TYPE_PIXBUF);
gtk_list_store_append (store, &iter);
icon = gdk_pixbuf_new_from_file("edit.png", &error);
gtk_list_store_set (store, &iter,
                    0, "A5525654",
                    1, "DFFFCCN",
                    2, "Doe",
                    3, "John",
                    4, "M",
                    5, "casablanca",
                    6, 2014,
                    7, 18.22,
                    8,icon,
                    -1);
if (error)
{
    g_warning ("probleme de chargement de l'icone : %s\n", error->message);
    g_error_free(error);
    error = NULL;
}
return GTK_TREE_MODEL (store);
}
GtkWidget * create_view_and_model()
{
GtkCellRenderer     *renderer;
GtkTreeModel        *model;
GtkWidget           *view;

view = gtk_tree_view_new ();
char colonne[9][16] =
{
    "CIN",
    "CNE",
    "Nom",
    "Prenom",
    "Sexe",
    "Etablissement",
    "Annee Obt",
    "Note Gener",
    "Edit"
};
int i;
for(i=0; i<9; i++)
{
    if(i==8)
    {
        renderer = gtk_cell_renderer_pixbuf_new();
        gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (view),
                -1,
                colonne[i],
                renderer,
                "pixbuf", i,
                NULL);
    }
    else
    {
        renderer = gtk_cell_renderer_text_new ();
        gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (view),
                -1,
                colonne[i],
                renderer,
                "text", i,
                NULL);
    }
}
model = create_and_fill_model ();
gtk_tree_view_set_model (GTK_TREE_VIEW (view), model);
g_object_unref (model);
return view;
}
int main (int argc, char **argv)
{
GtkWidget *window;
GtkWidget *view;
gtk_init (&argc, &argv);
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
g_signal_connect (window, "delete_event", gtk_main_quit, NULL);
view = create_view_and_model ();
gtk_container_add (GTK_CONTAINER (window), view);
gtk_widget_show_all (window);
gtk_main ();
return 0;
}

Answer 2

在树视图中放置按钮的实现无法按写入方式工作。您正在为所有列创建文本渲染器，文本渲染器显然无法绘制GTK按钮。（根据模型中的按钮类型列，在渲染器上设置text属性时会出现错误。）

在树状视图中放置按钮的一种简单方法是在单元格中放置一个可单击的图像，如this answer所示。

带有GtkListStore的GTKButton

2 个答案: