GUI簡介
圖形化使用者介面(Graphical User Interface,簡稱 GUI,又稱圖形使用者介面)是指採用圖形方式顯示的電腦操作使用者介面。
與早期電腦使用的命令列介面相比,圖形介面對於使用者來說在視覺上更易於接受。然而這介面若要通過在顯示屏的特定位置,以”各種美觀而不單調的視覺訊息“提示使用者”狀態的改變“,勢必得比簡單的訊息呈現花上更多的計算能力。
一個簡單的記事本(只可以開啟檔案進行修改)
<?phpset_time_limit (0); // 設定已耗用時間if (!class_exists ("gtk")) // 判斷是否有GTK模組 if (strtoupper (substr ($_SERVER["OS"], 0, 3)) == "WIN") dl ("php_gtk.dll"); else dl ("php_gtk.so");$window = &new GtkWindow (); // 建一個視窗$window->set_uposition (100, 100); // 視窗出現位置$window->set_usize ((gdk::screen_width()-200), (gdk::screen_height()-150)); // 視窗大小$window->set_title ("WINDOWS"); // 設定視窗標題$window->connect_object ('destroy', array ('gtk', 'main_quit')); // 註冊視窗的事件$vbox = &new GtkVBox (); $hbox = &new GtkHBox (); $window->add ($vbox);$menuBar = &new GtkMenuBar (); // 建立菜單$vbox->pack_start ($menuBar, false, false, 0);$file = &new GtkMenuItem ("File");$menuBar->append ($file);$fileMenu = &new GtkMenu ();$open = &new GtkMenuItem ("Open");$save = &new GtkMenuItem ("Save");$line = &new GtkMenuItem ();$line->set_sensitive (true);$exit = &new GtkMenuItem ("Exit");$fileMenu->append ($open);$open->connect_object ('activate', 'showFileSelection'); $fileMenu->append ($save);$save->connect_object ('activate', 'saveFile');$fileMenu->append ($line);$fileMenu->append ($exit);$exit->connect_object ('activate', array ('gtk', 'main_quit'));$file->set_submenu ($fileMenu);$scroll = &new GtkScrolledWindow ();$scroll->set_border_width (8);$scroll->set_policy (GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);$hbox->pack_start ($scroll, true, true, 0);$vbox->pack_start ($hbox, true, true, 1);$text = &new GtkText ();$text->set_editable (true);$text->set_word_wrap (true);$scroll->add ($text);function showFileSelection () // 檔案選擇函數{ $file = &new GtkFileSelection ("File Selection"); $ok_button = $file->ok_button; $ok_button->connect ('clicked', 'openFile', $file); $ok_button->connect_object ('clicked', array ($file, 'destroy')); $cancel_button = $file->cancel_button; $cancel_button->connect_object ('clicked', array ($file, 'destroy')); $file->show ();}$filePath = null;function openFile ($button, $f) // 開啟檔案的函數{ GLOBAL $text, $save, $filePath; $filePath = $f->get_filename (); if (is_file ($filePath)) { $fp = fopen ($filePath, 'r'); while (!feof ($fp)) $str .= fgets ($fp, 1024); $text->insert (null, null, null, $str); fclose ($fp); return $filePath; }}function saveFile () // 儲存檔案的函數{ GLOBAL $filePath, $text; if (is_file ($filePath)) { $str = $text->get_chars (0, -1); $fp = fopen ($filePath, 'w'); fwrite ($fp, $str); fclose ($fp); } return;}$window->show_all (); // 顯示表單內的所有控制項gtk::main (); // 最重要的一句,不可少的?>