Gnome学习3 Event处理

Gnome本身的信号处理还可以用于事件处理。

• event
• button_press_event
• button_release_event
• scroll_event
• motion_notify_event
• delete_event
• destroy_event
• expose_event
• key_press_event
• key_release_event
• enter_notify_event
• leave_notify_event
• configure_event
• focus_in_event
• focus_out_event
• map_event
• unmap_event
• property_notify_event
• selection_clear_event
• selection_request_event
• selection_notify_event
• proximity_in_event
• proximity_out_event
• visibility_notify_event
• client_event
• no_expose_event
• window_state_event

处理对应的callback函数如下：

gint callback_func( GtkWidget *widget,
                    GdkEvent  *event,
                    gpointer   callback_data );

参数中的GdtEvent是事先定义好的C结构体。
  GDK_NOTHING
  GDK_DELETE
  GDK_DESTROY
  GDK_EXPOSE
  GDK_MOTION_NOTIFY
  GDK_BUTTON_PRESS
  GDK_2BUTTON_PRESS
  GDK_3BUTTON_PRESS
  GDK_BUTTON_RELEASE
  GDK_KEY_PRESS
  GDK_KEY_RELEASE
  GDK_ENTER_NOTIFY
  GDK_LEAVE_NOTIFY
  GDK_FOCUS_CHANGE
  GDK_CONFIGURE
  GDK_MAP
  GDK_UNMAP
  GDK_PROPERTY_NOTIFY
  GDK_SELECTION_CLEAR
  GDK_SELECTION_REQUEST
  GDK_SELECTION_NOTIFY
  GDK_PROXIMITY_IN
  GDK_PROXIMITY_OUT
  GDK_DRAG_ENTER
  GDK_DRAG_LEAVE
  GDK_DRAG_MOTION
  GDK_DRAG_STATUS
  GDK_DROP_START
  GDK_DROP_FINISHED
  GDK_CLIENT_EVENT
  GDK_VISIBILITY_NOTIFY
  GDK_NO_EXPOSE
  GDK_SCROLL
  GDK_WINDOW_STATE
  GDK_SETTING


教程中给的例子如下：
g_signal_connect (G_OBJECT (button), "button_press_event",
                  G_CALLBACK (button_press_callback), NULL);

static gboolean button_press_callback( GtkWidget      *widget, 
                                       GdkEventButton *event,
                                       gpointer        data );

还有就是选中与drag&drop对应的事件也是这样的。

• selection_received
• selection_get
• drag_begin_event
• drag_end_event
• drag_data_delete
• drag_motion
• drag_drop
• drag_data_get
• drag_data_received

过几天我会写个例子程序的（几天好长的）。