title: How to print value of variable in gtk window?
body: <p>I have global variable <code>maxflow</code> in my <code>gui.c</code> file. I am using <code>GtkAssistant</code> for multiple windows. On <code>page[5]</code> ,I want to print this value.
  Here is portion of my code:</p>
  
  <pre><code>typedef struct {
      GtkWidget *widget;
      gint index;
      const gchar *title;
      GtkAssistantPageType type;
      gboolean complete;
  } PageInfo;
  
  PageInfo page[6] = {
      {NULL, -1, "Introduction", GTK_ASSISTANT_PAGE_INTRO, TRUE},
      {NULL, -1, "Projects", GTK_ASSISTANT_PAGE_CONTENT, TRUE},
      {NULL, -1, "Profit For Projects", GTK_ASSISTANT_PAGE_CONTENT, TRUE},
      {NULL, -1, "Prerequisites For Projects", GTK_ASSISTANT_PAGE_CONTENT, TRUE},
      {NULL, -1, "Click the Button", GTK_ASSISTANT_PAGE_PROGRESS, FALSE},
      {NULL, -1, "Confirmation", GTK_ASSISTANT_PAGE_CONFIRM, TRUE},
  };
  
  page[5].widget = gtk_label_new("OUTPUT\n" "it is time to leave!");
  </code></pre>
  
  <p>This is not continuous code first part is structure, then definition of pages,then I have just shown what I am doing on page[5].
  Now I want to display this text and value of a global variable on my window,
  can any one suggest changes instead of <code>gtk_label_new()</code> what should I use to accomplish my task.
  I am very new to gtk.</p>