四、Gtk4-Widgets (2)

最新推荐文章于 2025-11-12 07:50:22 发布

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最新推荐文章于 2025-11-12 07:50:22 发布 · 955 阅读

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文章展示了如何使用GTK4库创建一个简单的文本编辑器，通过GtkTextView进行文本显示和编辑，利用GtkTextBuffer存储文本内容，并通过添加GtkScrolledWindow解决窗口大小固定的问题，实现文本超出时的滚动功能。

1 GtkTextView，GtkTextBuffer and GtkScrolledWindow

GtkTextView and GtkTextBuffer

GtkTextView是一个用于多行文本编辑的构件。GtkTextBuffer是一个连接到GtkTextView的文本缓冲区。请参阅下面的示例程序tfv1.c。

 1 #include <gtk/gtk.h>
 2 
 3 static void
 4 app_activate (GApplication *app) {
   
   
 5   GtkWidget *win;
 6   GtkWidget *tv;
 7   GtkTextBuffer *tb;
 8   gchar *text;
 9 
10   text =
11       "Once upon a time, there was an old man who was called Taketori-no-Okina. "
12       "It is a japanese word that means a man whose work is making bamboo baskets.\n"
13       "One day, he went into a mountain and found a shining bamboo. "
14       "\"What a mysterious bamboo it is!,\" he said. "
15       "He cut it, then there was a small cute baby girl in it. "
16       "The girl was shining faintly. "
17       "He thought this baby girl is a gift from Heaven and took her home.\n"
18       "His wife was surprized at his story. "
19       "They were very happy because they had no children. "
20       ;
21   win = gtk_application_window_new (GTK_APPLICATION (app));
22   gtk_window_set_title (GTK_WINDOW (win), "Taketori");
23   gtk_window_set_default_size (GTK_WINDOW (win), 400, 300);
24 
25   tv = gtk_text_view_new (