Question

我目前正在编写一个带有GtkTreeView和GtkCellRendererText且属性editable设置为true的应用程序。当双击一个项目时，我可以对其进行编辑。现在，我希望能够添加一个空行并立即开始对其进行编辑。我尝试在将gtk_tree_view_set_cursor_on_cell设置为true的情况下使用start_editing。它选择该行，但不会开始编辑。我整理了一个小例子（请不要因为我只是一个小例子而没有任何错误检查）。

#include <gtk/gtk.h>

GtkListStore  *store;
GtkWidget *window;
GtkWidget *view;
GtkCellRenderer *renderer;
GtkWidget *button;
GtkWidget *vbox;


void sig_inserted(GtkTreeModel *model, GtkTreePath *path, GtkTreeIter *iter)
{
    // Set cursor on cell with start_editing = TRUE
    gtk_tree_view_set_cursor_on_cell(GTK_TREE_VIEW(view), path, gtk_tree_view_get_column(GTK_TREE_VIEW(view), 0), renderer, TRUE);
}

void button_clicked(GtkButton *button, GdkEvent *event, gpointer user_data)
{
    // Add empty row to liststore
    GtkTreeIter iter;
    gtk_list_store_append(store, &iter);
    gtk_list_store_set(store, &iter, 0, "", -1);
}

int main (int argc, char **argv)
{
    gtk_init (&argc, &argv);

    window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
    g_signal_connect (window, "delete_event", gtk_main_quit, NULL);

    view = gtk_tree_view_new ();

    // Create renderer and set editable to TRUE
    renderer = gtk_cell_renderer_text_new ();
    GValue val = G_VALUE_INIT;
    g_value_init(&val, G_TYPE_BOOLEAN);
    g_value_set_boolean(&val, TRUE);
    g_object_set_property(G_OBJECT(renderer), "editable", &val);
    g_value_unset(&val);

    // Insert Text column
    gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (view),
                                               -1,      
                                               "Name",  
                                               renderer,
                                               "text", 0,
                                               NULL);

    store = gtk_list_store_new (1, G_TYPE_STRING);

    // Add test item
    GtkTreeIter iter;
    gtk_list_store_append (store, &iter);
    gtk_list_store_set (store, &iter,
                      0, "Test",
                      -1);

    gtk_tree_view_set_model (GTK_TREE_VIEW (view), GTK_TREE_MODEL(store));

    vbox = gtk_vbox_new(0,0);
    button = gtk_button_new_with_label("Add edit item");
    gtk_box_pack_start(GTK_BOX(vbox), view, TRUE, TRUE, 0);
    gtk_box_pack_start(GTK_BOX(vbox), button, TRUE, TRUE, 0);



    gtk_container_add (GTK_CONTAINER (window), vbox);

    gtk_widget_show_all (window);

    g_signal_connect(G_OBJECT(store), "row-inserted", G_CALLBACK(sig_inserted), NULL);
    g_signal_connect(G_OBJECT(button), "button-release-event", G_CALLBACK(button_clicked), NULL);

    gtk_main ();

    return 0;
}

使用{p>编译它（因为我不满足所有C需求）

g++

它也可以与Gtk3一起使用，因为我使用的东西似乎没有什么改变。

有人可以指出为什么它不开始编辑吗？

Answer 1

gtk_list_store_set取消对单元格的编辑。注释掉该行，一切正常。

只需稍作修改即可找到它：

void sig_inserted(GtkTreeModel *model, GtkTreePath *path, GtkTreeIter *iter)
{
    GtkTreeViewColumn * col = gtk_tree_view_get_column(GTK_TREE_VIEW(view), 0);
    // Set cursor on cell with start_editing = TRUE
    g_message ("sig_inserted", __LINE__);
    gtk_tree_view_set_cursor_on_cell(GTK_TREE_VIEW(view), path, col, renderer, TRUE);
}

void button_clicked(GtkButton *button, GdkEvent *event, gpointer user_data)
{
    // Add empty row to liststore
    GtkTreeIter iter;
    g_message ("Clicked");
    gtk_list_store_append(store, &iter);
    g_message ("Appended");
    gtk_list_store_set(store, &iter, 0, "x", -1);
    g_message ("Set");
}

void
estart (GtkCellRenderer *renderer,
        GtkCellEditable *editable,
        gchar           *path,
        gpointer         user_data)
{
    g_message ("renderer: start edit");
}

void
ecancel (GtkCellRenderer *renderer,
         gpointer         user_data)
{
    g_message ("renderer: cancel edit");
}

并连接到渲染器信号：

g_signal_connect(G_OBJECT(renderer), "editing-started", G_CALLBACK(estart), NULL);
g_signal_connect(G_OBJECT(renderer), "editing-canceled", G_CALLBACK(ecancel), NULL);

给出以下输出： ** Message: Clicked ** Message: sig_inserted ** Message: renderer: start edit ** Message: Appended ** Message: renderer: cancel edit ** Message: Set

将GtkTreeView中的单元格设置为以编程方式编辑模式

1 个答案: