GTKCellRendererToggle in a GTKTreeView
GTKCellRendererToggle in a GTKTreeView
提问于 2017-05-01 18:39:04
for(int i=0; i<2; i++) {
types[i] = G_TYPE_STRING;
}
types[2] = G_TYPE_BOOLEAN;
tree_store = gtk_list_store_newv(3, types);
tree_view = gtk_tree_view_new_with_model(GTK_TREE_MODEL(tree_store));
gtk_scrolled_window_add_with_viewport (GTK_SCROLLED_WINDOW (scrolled_window), tree_view);
GtkTreeViewColumn *column;
GtkCellRenderer *renderer;
renderer = gtk_cell_renderer_text_new();
column = gtk_tree_view_column_new_with_attributes ("Level",renderer,"text",0,NULL);
gtk_tree_view_column_set_sort_column_id (column, 0);
gtk_tree_view_column_set_resizable (column, true);
gtk_tree_view_append_column (GTK_TREE_VIEW(tree_view), column);
renderer = gtk_cell_renderer_text_new();
column = gtk_tree_view_column_new_with_attributes ("URL",renderer,"text",1,NULL);
gtk_tree_view_column_set_sort_column_id (column, 1);
gtk_tree_view_column_set_resizable (column, true);
gtk_tree_view_append_column (GTK_TREE_VIEW(tree_view), column);
renderer = gtk_cell_renderer_toggle_new();
column = gtk_tree_view_column_new_with_attributes ("Image",renderer,"active",2,NULL);
gtk_tree_view_column_set_sort_column_id (column, 2);
gtk_tree_view_column_set_resizable (column, true);
gtk_tree_view_append_column (GTK_TREE_VIEW(tree_view), column);
for(int i=0; i<mapTiles.size(); i++) {
GtkTreeIter iter;
gtk_list_store_append(tree_store, &iter);
gtk_list_store_set(tree_store, &iter, 0, "A", -1);
gtk_list_store_set(tree_store, &iter, 1, "B", -1);
gtk_list_store_set(tree_store, &iter, 2, FALSE, -1);
}为什么会这样呢？我正在尝试拥有一个树视图，其中两个列都有字符串，最后还有一个复选框。现在，复选框出现了，但我无法切换它。
回答 1
Stack Overflow用户
回答已采纳
发布于 2017-05-01 20:53:19
单元格呈现器(切换)只反映模型上的“绑定”值。您必须使用回调来处理切换的信号，该回调更新单元格呈现器将从中读取其状态的模型。检查CellRendererToggle‘切换’信号基准
void user_function (GtkCellRendererToggle *cell_renderer, gchar *path, gpointer user_data)应用程序有责任用正确的值更新模型以存储在path上。通常，这与当前存储在path中的值正好相反。
使用最后一个呈现器指针编辑，设置切换回调，并在回调上更改模型以更新值：
[your code]
...
renderer = gtk_cell_renderer_toggle_new();
...
g_signal_connect(G_OBJECT(renderer), "toggled", G_CALLBACK(on_toggle_renderer_toggled), tree_view);
...
void on_toggle_renderer_toggled (GtkCellRendererToggle *cell_renderer, gchar *path, gpointer user_data) {
gboolean val;
GtkTreeIter iter;
GtkTreeModel *model;
model = gtk_tree_view_get_model (GTK_TREE_VIEW(user_data));
if (gtk_tree_model_get_iter (model, &iter, path) == false) return;
gtk_tree_model_get(model, &iter, 2, &val, -1);
gtk_list_store_set(GTK_LIST_STORE(model), &iter, 2, !val, -1);
}PS:上面的代码没有经过测试，所以可能有一些排印或丢失的位。
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原文链接：
https://stackoverflow.com/questions/43724493
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