编程开发

使用Glade进行GTK开发

在前面的文章介绍了使用Glade进行PyGTK开发，现在再来说一说使用Glade来进行GTK的开发。

首先需要的开发环境：
Glade3、GTK+2.0、GCC

先用Glade设计一个用户界面，保存为test.glade，内容如下：

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<?xml version="1.0" encoding="UTF-8"?>
<interface>
  <requires lib="gtk+" version="2.24"/>
  <!-- interface-naming-policy project-wide -->
  <object class="GtkWindow" id="window1">
    <property name="can_focus">False</property>
    <property name="resizable">False</property>
    <property name="default_width">440</property>
    <property name="default_height">450</property>
    <signal name="destroy" handler="on_MainWindow_destroy" swapped="no"/>
    <child>
      <object class="GtkAlignment" id="alignment1">
        <property name="visible">True</property>
        <property name="can_focus">False</property>
        <property name="top_padding">10</property>
        <property name="bottom_padding">10</property>
        <property name="left_padding">10</property>
        <property name="right_padding">10</property>
        <child>
          <object class="GtkVBox" id="vbox1">
            <property name="visible">True</property>
            <property name="can_focus">False</property>
            <child>
              <object class="GtkLabel" id="label1">
                <property name="visible">True</property>
                <property name="can_focus">False</property>
                <property name="label" translatable="yes">龙昌博客： http://www.xefan.com</property>
              </object>
              <packing>
                <property name="expand">True</property>
                <property name="fill">True</property>
                <property name="position">0</property>
              </packing>
            </child>
            <child>
              <object class="GtkButton" id="button1">
                <property name="label" translatable="yes">关闭</property>
                <property name="use_action_appearance">False</property>
                <property name="visible">True</property>
                <property name="can_focus">True</property>
                <property name="receives_default">True</property>
                <signal name="clicked" handler="on_MainWindow_destroy" swapped="no"/>
              </object>
              <packing>
                <property name="expand">False</property>
                <property name="fill">False</property>
                <property name="position">1</property>
              </packing>
            </child>
          </object>
        </child>
      </object>
    </child>
  </object>
</interface>

再创建一个C源文件，保存为test.c，内容如下：

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#include <gtk/gtk.h>

void on_MainWindow_destroy(GtkObject *widget, gpointer data)
{
    gtk_main_quit();
}

int main(int argc, char *argv[])
{
    GtkBuilder *builder;
    gtk_init(&argc, &argv);
    GtkWidget *window;
    builder = gtk_builder_new();
    gtk_builder_add_from_file(builder, "test.glade", NULL);

    window = GTK_WIDGET(gtk_builder_get_object(builder, "window1"));
    gtk_builder_connect_signals(builder, NULL);
    // 释放builder的空间
    g_object_unref(G_OBJECT(builder));

    gtk_widget_show_all(window);
    gtk_main();
    return 0;
}

然后再编译运行查看效果。
如果出现类似“Gtk-WARNING **: Could not find signal handler ‘on_MainWindow_destroy’”的错误请尝试以下方法：
方法一：将编译命令改为：gcc -o test test.c `pkg-config –libs –cflags gtk+-2.0` -export-dynamic
方法二：将编译命令改为：gcc -o test test.c `pkg-config –libs –cflags libglade-2.0 gmodule-export-2.0`