Đang chuẩn bị nút TẢI XUỐNG, xin hãy chờ
Tải xuống
Tham khảo tài liệu 'apress foundations_of gtk plus development 2007 phần 5', công nghệ thông tin, kỹ thuật lập trình phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 206 CHAPTER 6 USING GLIB case 0 gtk_init argc argv setup_app parent_to_child child_to_parent pid break default gtk_init argc argv setup_app child_to_parent parent_to_child pid gtk_main return 0 Set up the GUI aspects of each window and setup IO channel watches. static void setup_app gint input gint output gint pid GtkWidget window entry GIOChannel channel_read channel_write window gtk_window_new GTK_WINDOW_TOPLEVEL entry gtk_entry_new gtk_container_add GTK_CONTAINER window entry gtk_container_set_border_width GTK_CONTAINER window 10 gtk_widget_set_size_request window 200 -1 gtk_widget_show_all window Close the unnecessary pipes for the given process. close input 1 close output 0 Create read and write channels out of the remaining pipes. channel_read g_io_channel_unix_new input 0 channel_write g_io_channel_unix_new output 1 if channel_read NULL channel_write NULL g_error Error The GIOChannels could not be created n Watch the read channel for changes. This will send the appropriate data. if g_io_add_watch channel_read G_IO_IN G_IO_HUP iochannel_read gpointer entry g_error Error Read watch could not be added to the GIOChannel n CHAPTER 6 USING GLIB 207 signal_id g_signal_connect G_OBJECT entry changed G_CALLBACK entry_changed gpointer channel_write Set the window title depending on the process identifier. if pid 0 gtk_window_set_title GTK_WINDOW window Child Process else gtk_window_set_title GTK_WINDOW window Parent Process Read the message from the pipe and set the text to the GtkEntry. static gboolean iochannel_read GIOChannel channel GIOCondition condition GtkEntry entry GIOStatus ret_value gchar message gsize length The pipe has died unexpectedly so exit the application. if condition G_IO_HUP g_error Error The pipe has died n Read the data that has been sent through the pipe. ret_value g_io_channel_read_line channel message length NULL NULL if ret_value G_IO_STATUS_ERROR g_error Error The line could not be read n Synchronize the GtkEntry text blocking the changed
