如何在 GTK+ 中隐藏一个 .ui 文件并显示另一个 .ui 文件答案

【问题标题】：How to hide a .ui file and show another .ui file in GTK+如何在 GTK+ 中隐藏一个 .ui 文件并显示另一个 .ui 文件
【发布时间】：2018-07-17 03:39:40
【问题描述】：

我在 GTK+ 3 上的窗口上有一个按钮。单击该按钮时，应该会打开另一个 ui 文件中的窗口，并且应该删除当前窗口的 ui（隐藏）。但我不知道该怎么做。我对 Linux 上的 Gtk+ 编程真的很陌生。这是我的 .c 文件：

#include <gtk/gtk.h>

static void 
buttonClicked(GtkWidget *widget,
              gpointer    data)
{
//here I need to open another window and close the current one
}

int main (int   argc, char *argv[])
{
  GtkBuilder *builder;
  GObject *window;
  GObject *button;
  GError *error = NULL;

  gtk_init (&argc, &argv);

  builder = gtk_builder_new();
  if(gtk_builder_add_from_file(builder, "main-window.ui", &error) == 0)
    {
      g_printerr ("Error loading file: %s\n", error->message);
      g_clear_error (&error);
      return 1;
    }
   window = gtk_builder_get_object (builder, "window");
   g_signal_connect (window, "destroy", G_CALLBACK (gtk_main_quit), NULL);

   button = gtk_builder_get_object (builder, "buttonOpen");
   g_signal_connect (button, "clicked", G_CALLBACK (buttonClicked), NULL);

   gtk_main ();

   return 0;
}

【问题讨论】：

标签： c gtk gtk3

【解决方案1】：

使用gtk_widget_show_all () 和gtk_widget_hide ()。

#include <gtk/gtk.h>

static void 
buttonClicked(GtkWidget *widget, GObject* window)
{
    GtkBuilder *builder;
    GObject *window2;
    GError *error = NULL;
    builder = gtk_builder_new();
    if(gtk_builder_add_from_file(builder, "second-window.ui", &error) == 0)
    {
        g_printerr ("Error loading file: %s\n", error->message);
        g_clear_error (&error);
        return;
    }
    window2 = gtk_builder_get_object (builder, "window");
    gtk_widget_show_all(GTK_WIDGET(window2));
    gtk_widget_hide(GTK_WIDGET(window));
}

int main (int   argc, char *argv[])
{
  GtkBuilder *builder;
  GObject *window;  
  GObject *button;
  GError *error = NULL;

  gtk_init (&argc, &argv);

  builder = gtk_builder_new();
  if(gtk_builder_add_from_file(builder, "main-window.ui", &error) == 0)
    {
      g_printerr ("Error loading file: %s\n", error->message);
      g_clear_error (&error);
      return 1;
    }
   window = gtk_builder_get_object (builder, "window");
   g_signal_connect (window, "destroy", G_CALLBACK (gtk_main_quit), NULL);

   button = gtk_builder_get_object (builder, "buttonOpen");
   g_signal_connect (button, "clicked", G_CALLBACK (buttonClicked), window);

   //some widgets don't draw if their parent window was not "show alled"
   gtk_widget_show_all(GTK_WIDGET(window));

   gtk_main ();

   return 0;
}

请注意，gpointer 实际上是 void*，因此您可以随意传递给您的函数。

【讨论】：