c - 如何获取激活行的数据 GTK+ C

Question

激活“row-activated”信号后，如何获取选中行的数据？我正在使用 C 语言。

void on_treeview1_row_activated()
{
//I want to get the data here
}

Answer 1

row-activated 的回调原型(prototype)信号应该是:

void user_function (GtkTreeView       *tree_view,
                    GtkTreePath       *path,
                    GtkTreeViewColumn *column,
                    gpointer           user_data)

这意味着您将拥有对 TreeView (和相关模型/商店)和选定路径的引用。这应该足以从激活的行中提取数据。

假设您的模型/商店的第一列是一些整数作为 ID，第二列是字符串:

| ID |  TEXT      |
+----+------------+
| 12 | John Doe   |
...
| 35 | Whatever   |
+----+------------|

所以你的回调函数应该是这样的:

void on_treeview1_row_activated(GtkTreeView       *treeview, 
                                GtkTreePath       *path, 
                                GtkTreeViewColumn *column,
                                gpointer userdata) {

   gint int_data;
   gchar *str_data;

   GtkTreeIter iter;
   GtkTreeModel *model = gtk_tree_view_get_model(treeview);

   if (gtk_tree_model_get_iter(model, &iter, path)) {
      gtk_tree_model_get (GTK_LIST_STORE(model), &iter, 0, &int_data, 1, &str_data, -1));
      // Here the variables int_data and str_data should be filled with
      // relevant data
   }
}