将 GtkTreeView 中的单元格设置为以编程方式编辑模式

Set Cell in GtkTreeView to edit mode programmatically

本文关键字：编程 方式 编辑 模式 设置 GtkTreeView 单元格      更新时间：2023-10-16

我目前编写了一个应用程序，该应用程序具有GtkTreeView，GtkCellRendererText属性editable设置为 true。双击一个项目时，我可以编辑它。现在我希望能够添加一个空行并立即开始编辑它。我尝试使用gtk_tree_view_set_cursor_on_cellstart_editing设置为 true。它选择该行，但不开始编辑。我把一个小例子放在一起(请不要说我没有任何错误检查，因为它只是一个小例子(。

#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g++编译它(因为我不符合所有 C 需求(

g++ -o tree tree.cc `pkg-config --libs --cflags gtk+-2.0`

我认为它也适用于 Gtk3，因为我使用的东西似乎没有任何变化。

有人可以指出我为什么它不开始编辑吗？

gtk_list_store_set取消对单元格的编辑。注释掉这一行可以使一切正常。

只需对代码稍作修改即可找到：

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

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