我想向 GTK+ 助手中的用户询问他的姓名，将此名称保存在全局变量中，并在不同站点的同一助手中使用此变量。我的问题是助手已完全创建并且对新站点的更改无效。
示例：我用“empty”初始化全局变量“name”。现在，助手会创建所有站点，但仅显示第一个站点。用户在“entryfield”中写下他的名字，变量“name”现在包含他的名字。助手现在显示应该包含用户名的第二个站点，但它显示字符串“empty”。
我需要用新变量“刷新”这个已经创建的条目。对不起我的英语不好，我希望我能解释一下我的问题。:)
完整的示例代码：
#include <gtk/gtk.h>
#include <string.h>
static void entry_changed (GtkEditable*, GtkAssistant*);
static void assistant_cancel (GtkAssistant*, gpointer);
static void assistant_close (GtkAssistant*, gpointer);
char *name = "empty";
typedef struct {
GtkWidget *widget;
gint index;
const gchar *title;
GtkAssistantPageType type;
gboolean complete;
} PageInfo;
int main (int argc,
char *argv[])
{
GtkWidget *assistant, *entry, *label;
guint i;
PageInfo page[5] = {
{ NULL, -1, "Introduction", GTK_ASSISTANT_PAGE_INTRO, TRUE},
{ NULL, -1, NULL, GTK_ASSISTANT_PAGE_CONTENT, FALSE},
{ NULL, -1, NULL, GTK_ASSISTANT_PAGE_CONTENT, TRUE},
{ NULL, -1, "Confirmation", GTK_ASSISTANT_PAGE_CONFIRM, TRUE},
};
gtk_init (&argc, &argv);
/* Create a new assistant widget with no pages. */
assistant = gtk_assistant_new ();
gtk_widget_set_size_request (assistant, 450, 300);
gtk_window_set_title (GTK_WINDOW (assistant), "GtkAssistant Example");
g_signal_connect (G_OBJECT (assistant), "destroy",
G_CALLBACK (gtk_main_quit), NULL);
page[0].widget = gtk_label_new ("This is an example of a GtkAssistant. By\n"\
"clicking the forward button, you can continue\n"\
"to the next section!");
page[1].widget = gtk_hbox_new (FALSE, 5);
page[2].widget = gtk_entry_new();
page[3].widget = gtk_label_new ("finish!");
/* Create the necessary widgets for the second page. */
label = gtk_label_new ("Your Name: ");
entry = gtk_entry_new ();
gtk_box_pack_start (GTK_BOX (page[1].widget), label, FALSE, FALSE, 5);
gtk_box_pack_start (GTK_BOX (page[1].widget), entry, FALSE, FALSE, 5);
gtk_entry_set_text(GTK_ENTRY(page[2].widget), name);
/* Add four pages to the GtkAssistant dialog. */
for (i = 0; i < 4; i++)
{
page[i].index = gtk_assistant_append_page (GTK_ASSISTANT (assistant),
page[i].widget);
gtk_assistant_set_page_title (GTK_ASSISTANT (assistant),
page[i].widget, page[i].title);
gtk_assistant_set_page_type (GTK_ASSISTANT (assistant),
page[i].widget, page[i].type);
/* Set the introduction and conclusion pages as complete so they can be
* incremented or closed. */
gtk_assistant_set_page_complete (GTK_ASSISTANT (assistant),
page[i].widget, page[i].complete);
}
/* Update whether pages 2 through 4 are complete based upon whether there is
* text in the GtkEntry, the check button is active, or the progress bar
* is completely filled. */
g_signal_connect (G_OBJECT (entry), "changed",
G_CALLBACK (entry_changed), (gpointer) assistant);
g_signal_connect (G_OBJECT (assistant), "cancel",
G_CALLBACK (assistant_cancel), NULL);
g_signal_connect (G_OBJECT (assistant), "close",
G_CALLBACK (assistant_close), NULL);
gtk_widget_show_all (assistant);
gtk_main ();
return 0;
}
/* If there is text in the GtkEntry, set the page as complete. Otherwise,
* stop the user from progressing the next page. */
static void
entry_changed (GtkEditable *entry,
GtkAssistant *assistant)
{
const gchar *text = gtk_entry_get_text (GTK_ENTRY (entry));
gint num = gtk_assistant_get_current_page (assistant);
GtkWidget *page = gtk_assistant_get_nth_page (assistant, num);
gtk_assistant_set_page_complete (assistant, page, (strlen (text) > 0));
name = g_strdup(gtk_entry_get_text(GTK_ENTRY(entry)));
}
/* If the dialog is cancelled, delete it from memory and then clean up after
* the Assistant structure. */
static void
assistant_cancel (GtkAssistant *assistant,
gpointer data)
{
gtk_widget_destroy (GTK_WIDGET (assistant));
}
/* This function is where you would apply the changes and destroy the assistant. */
static void
assistant_close (GtkAssistant *assistant,
gpointer data)
{
g_print ("You would apply your changes now!\n");
gtk_widget_destroy (GTK_WIDGET (assistant));
}