Clever Geek Handbook

Ruby + Qt4、シンプルなテキストエディター、パート2

以前の投稿（ f3ex.habrahabr.ru/blog/54673 ）で、rubyとQt4を使用して「シンプルテキストエディター」を作成する方法を書きました。

Python + Qt4からRuby + Qt4への移植例の継続



パート2



次に、次の質問について考えてみましょう。ファイルが選択されていない場合、またはテキストに変更が加えられていない場合、「保存」ボタンは無効にする必要があります。

Qt Disignerの「enabled」プロパティはアクティビティを担当します。または、このプロパティは、setEnabledメソッドを使用してルビーコードから設定できます。

b_saveボタンを設定してfalseプロパティを有効にし（ボックスをオフにします）、editor.rbフォームを再生成します。



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テキストが変更されたことを確認するには、textEditにtextChanged（）シグナルを使用します。



start.rbコードを次のように変更しましょう。



Copy Source | Copy HTML require 'Qt4' require 'editor.rb' class StartQT4 < Qt::MainWindow slots 'file_dialog()' , 'file_save()' , 'enable_save()' def initialize parent= nil super @ui = Ui_Notepad.new @ui.setupUi self Qt:: Object .connect(@ui.b_open, SIGNAL( 'clicked()' ), self , SLOT( 'file_dialog()' )) Qt:: Object .connect(@ui.b_save, SIGNAL( 'clicked()' ), self , SLOT( 'file_save()' )) Qt:: Object .connect(@ui.editor_window, SIGNAL( 'textChanged()' ), self , SLOT( 'enable_save()' )) end def file_dialog f = Qt::FileDialog if @filename = f.getOpenFileName text = File . new (@filename).read @ui.editor_window.setText text # # "" textChanged() @ui.b_save.setEnabled false end end def enable_save @ui.b_save.setEnabled true end def file_save if @filename f = File .new @filename, 'w' f. puts @ui.editor_window.toPlainText f.close end end end if $ 0 == __FILE__ app = Qt::Application. new (ARGV) myapp = StartQT4 .new myapp.show app. exec end



  1. Copy Source | Copy HTML require 'Qt4' require 'editor.rb' class StartQT4 < Qt::MainWindow slots 'file_dialog()' , 'file_save()' , 'enable_save()' def initialize parent= nil super @ui = Ui_Notepad.new @ui.setupUi self Qt:: Object .connect(@ui.b_open, SIGNAL( 'clicked()' ), self , SLOT( 'file_dialog()' )) Qt:: Object .connect(@ui.b_save, SIGNAL( 'clicked()' ), self , SLOT( 'file_save()' )) Qt:: Object .connect(@ui.editor_window, SIGNAL( 'textChanged()' ), self , SLOT( 'enable_save()' )) end def file_dialog f = Qt::FileDialog if @filename = f.getOpenFileName text = File . new (@filename).read @ui.editor_window.setText text # # "" textChanged() @ui.b_save.setEnabled false end end def enable_save @ui.b_save.setEnabled true end def file_save if @filename f = File .new @filename, 'w' f. puts @ui.editor_window.toPlainText f.close end end end if $ 0 == __FILE__ app = Qt::Application. new (ARGV) myapp = StartQT4 .new myapp.show app. exec end



  2. Copy Source | Copy HTML require 'Qt4' require 'editor.rb' class StartQT4 < Qt::MainWindow slots 'file_dialog()' , 'file_save()' , 'enable_save()' def initialize parent= nil super @ui = Ui_Notepad.new @ui.setupUi self Qt:: Object .connect(@ui.b_open, SIGNAL( 'clicked()' ), self , SLOT( 'file_dialog()' )) Qt:: Object .connect(@ui.b_save, SIGNAL( 'clicked()' ), self , SLOT( 'file_save()' )) Qt:: Object .connect(@ui.editor_window, SIGNAL( 'textChanged()' ), self , SLOT( 'enable_save()' )) end def file_dialog f = Qt::FileDialog if @filename = f.getOpenFileName text = File . new (@filename).read @ui.editor_window.setText text # # "" textChanged() @ui.b_save.setEnabled false end end def enable_save @ui.b_save.setEnabled true end def file_save if @filename f = File .new @filename, 'w' f. puts @ui.editor_window.toPlainText f.close end end end if $ 0 == __FILE__ app = Qt::Application. new (ARGV) myapp = StartQT4 .new myapp.show app. exec end



  4. Copy Source | Copy HTML require 'Qt4' require 'editor.rb' class StartQT4 < Qt::MainWindow slots 'file_dialog()' , 'file_save()' , 'enable_save()' def initialize parent= nil super @ui = Ui_Notepad.new @ui.setupUi self Qt:: Object .connect(@ui.b_open, SIGNAL( 'clicked()' ), self , SLOT( 'file_dialog()' )) Qt:: Object .connect(@ui.b_save, SIGNAL( 'clicked()' ), self , SLOT( 'file_save()' )) Qt:: Object .connect(@ui.editor_window, SIGNAL( 'textChanged()' ), self , SLOT( 'enable_save()' )) end def file_dialog f = Qt::FileDialog if @filename = f.getOpenFileName text = File . new (@filename).read @ui.editor_window.setText text # # "" textChanged() @ui.b_save.setEnabled false end end def enable_save @ui.b_save.setEnabled true end def file_save if @filename f = File .new @filename, 'w' f. puts @ui.editor_window.toPlainText f.close end end end if $ 0 == __FILE__ app = Qt::Application. new (ARGV) myapp = StartQT4 .new myapp.show app. exec end



  6. Copy Source | Copy HTML require 'Qt4' require 'editor.rb' class StartQT4 < Qt::MainWindow slots 'file_dialog()' , 'file_save()' , 'enable_save()' def initialize parent= nil super @ui = Ui_Notepad.new @ui.setupUi self Qt:: Object .connect(@ui.b_open, SIGNAL( 'clicked()' ), self , SLOT( 'file_dialog()' )) Qt:: Object .connect(@ui.b_save, SIGNAL( 'clicked()' ), self , SLOT( 'file_save()' )) Qt:: Object .connect(@ui.editor_window, SIGNAL( 'textChanged()' ), self , SLOT( 'enable_save()' )) end def file_dialog f = Qt::FileDialog if @filename = f.getOpenFileName text = File . new (@filename).read @ui.editor_window.setText text # # "" textChanged() @ui.b_save.setEnabled false end end def enable_save @ui.b_save.setEnabled true end def file_save if @filename f = File .new @filename, 'w' f. puts @ui.editor_window.toPlainText f.close end end end if $ 0 == __FILE__ app = Qt::Application. new (ARGV) myapp = StartQT4 .new myapp.show app. exec end



  8. Copy Source | Copy HTML require 'Qt4' require 'editor.rb' class StartQT4 < Qt::MainWindow slots 'file_dialog()' , 'file_save()' , 'enable_save()' def initialize parent= nil super @ui = Ui_Notepad.new @ui.setupUi self Qt:: Object .connect(@ui.b_open, SIGNAL( 'clicked()' ), self , SLOT( 'file_dialog()' )) Qt:: Object .connect(@ui.b_save, SIGNAL( 'clicked()' ), self , SLOT( 'file_save()' )) Qt:: Object .connect(@ui.editor_window, SIGNAL( 'textChanged()' ), self , SLOT( 'enable_save()' )) end def file_dialog f = Qt::FileDialog if @filename = f.getOpenFileName text = File . new (@filename).read @ui.editor_window.setText text # # "" textChanged() @ui.b_save.setEnabled false end end def enable_save @ui.b_save.setEnabled true end def file_save if @filename f = File .new @filename, 'w' f. puts @ui.editor_window.toPlainText f.close end end end if $ 0 == __FILE__ app = Qt::Application. new (ARGV) myapp = StartQT4 .new myapp.show app. exec end



  9. Copy Source | Copy HTML require 'Qt4' require 'editor.rb' class StartQT4 < Qt::MainWindow slots 'file_dialog()' , 'file_save()' , 'enable_save()' def initialize parent= nil super @ui = Ui_Notepad.new @ui.setupUi self Qt:: Object .connect(@ui.b_open, SIGNAL( 'clicked()' ), self , SLOT( 'file_dialog()' )) Qt:: Object .connect(@ui.b_save, SIGNAL( 'clicked()' ), self , SLOT( 'file_save()' )) Qt:: Object .connect(@ui.editor_window, SIGNAL( 'textChanged()' ), self , SLOT( 'enable_save()' )) end def file_dialog f = Qt::FileDialog if @filename = f.getOpenFileName text = File . new (@filename).read @ui.editor_window.setText text # # "" textChanged() @ui.b_save.setEnabled false end end def enable_save @ui.b_save.setEnabled true end def file_save if @filename f = File .new @filename, 'w' f. puts @ui.editor_window.toPlainText f.close end end end if $ 0 == __FILE__ app = Qt::Application. new (ARGV) myapp = StartQT4 .new myapp.show app. exec end



  10. Copy Source | Copy HTML require 'Qt4' require 'editor.rb' class StartQT4 < Qt::MainWindow slots 'file_dialog()' , 'file_save()' , 'enable_save()' def initialize parent= nil super @ui = Ui_Notepad.new @ui.setupUi self Qt:: Object .connect(@ui.b_open, SIGNAL( 'clicked()' ), self , SLOT( 'file_dialog()' )) Qt:: Object .connect(@ui.b_save, SIGNAL( 'clicked()' ), self , SLOT( 'file_save()' )) Qt:: Object .connect(@ui.editor_window, SIGNAL( 'textChanged()' ), self , SLOT( 'enable_save()' )) end def file_dialog f = Qt::FileDialog if @filename = f.getOpenFileName text = File . new (@filename).read @ui.editor_window.setText text # # "" textChanged() @ui.b_save.setEnabled false end end def enable_save @ui.b_save.setEnabled true end def file_save if @filename f = File .new @filename, 'w' f. puts @ui.editor_window.toPlainText f.close end end end if $ 0 == __FILE__ app = Qt::Application. new (ARGV) myapp = StartQT4 .new myapp.show app. exec end



  11. Copy Source | Copy HTML require 'Qt4' require 'editor.rb' class StartQT4 < Qt::MainWindow slots 'file_dialog()' , 'file_save()' , 'enable_save()' def initialize parent= nil super @ui = Ui_Notepad.new @ui.setupUi self Qt:: Object .connect(@ui.b_open, SIGNAL( 'clicked()' ), self , SLOT( 'file_dialog()' )) Qt:: Object .connect(@ui.b_save, SIGNAL( 'clicked()' ), self , SLOT( 'file_save()' )) Qt:: Object .connect(@ui.editor_window, SIGNAL( 'textChanged()' ), self , SLOT( 'enable_save()' )) end def file_dialog f = Qt::FileDialog if @filename = f.getOpenFileName text = File . new (@filename).read @ui.editor_window.setText text # # "" textChanged() @ui.b_save.setEnabled false end end def enable_save @ui.b_save.setEnabled true end def file_save if @filename f = File .new @filename, 'w' f. puts @ui.editor_window.toPlainText f.close end end end if $ 0 == __FILE__ app = Qt::Application. new (ARGV) myapp = StartQT4 .new myapp.show app. exec end



  12. Copy Source | Copy HTML require 'Qt4' require 'editor.rb' class StartQT4 < Qt::MainWindow slots 'file_dialog()' , 'file_save()' , 'enable_save()' def initialize parent= nil super @ui = Ui_Notepad.new @ui.setupUi self Qt:: Object .connect(@ui.b_open, SIGNAL( 'clicked()' ), self , SLOT( 'file_dialog()' )) Qt:: Object .connect(@ui.b_save, SIGNAL( 'clicked()' ), self , SLOT( 'file_save()' )) Qt:: Object .connect(@ui.editor_window, SIGNAL( 'textChanged()' ), self , SLOT( 'enable_save()' )) end def file_dialog f = Qt::FileDialog if @filename = f.getOpenFileName text = File . new (@filename).read @ui.editor_window.setText text # # "" textChanged() @ui.b_save.setEnabled false end end def enable_save @ui.b_save.setEnabled true end def file_save if @filename f = File .new @filename, 'w' f. puts @ui.editor_window.toPlainText f.close end end end if $ 0 == __FILE__ app = Qt::Application. new (ARGV) myapp = StartQT4 .new myapp.show app. exec end



  13. Copy Source | Copy HTML require 'Qt4' require 'editor.rb' class StartQT4 < Qt::MainWindow slots 'file_dialog()' , 'file_save()' , 'enable_save()' def initialize parent= nil super @ui = Ui_Notepad.new @ui.setupUi self Qt:: Object .connect(@ui.b_open, SIGNAL( 'clicked()' ), self , SLOT( 'file_dialog()' )) Qt:: Object .connect(@ui.b_save, SIGNAL( 'clicked()' ), self , SLOT( 'file_save()' )) Qt:: Object .connect(@ui.editor_window, SIGNAL( 'textChanged()' ), self , SLOT( 'enable_save()' )) end def file_dialog f = Qt::FileDialog if @filename = f.getOpenFileName text = File . new (@filename).read @ui.editor_window.setText text # # "" textChanged() @ui.b_save.setEnabled false end end def enable_save @ui.b_save.setEnabled true end def file_save if @filename f = File .new @filename, 'w' f. puts @ui.editor_window.toPlainText f.close end end end if $ 0 == __FILE__ app = Qt::Application. new (ARGV) myapp = StartQT4 .new myapp.show app. exec end



  14. Copy Source | Copy HTML require 'Qt4' require 'editor.rb' class StartQT4 < Qt::MainWindow slots 'file_dialog()' , 'file_save()' , 'enable_save()' def initialize parent= nil super @ui = Ui_Notepad.new @ui.setupUi self Qt:: Object .connect(@ui.b_open, SIGNAL( 'clicked()' ), self , SLOT( 'file_dialog()' )) Qt:: Object .connect(@ui.b_save, SIGNAL( 'clicked()' ), self , SLOT( 'file_save()' )) Qt:: Object .connect(@ui.editor_window, SIGNAL( 'textChanged()' ), self , SLOT( 'enable_save()' )) end def file_dialog f = Qt::FileDialog if @filename = f.getOpenFileName text = File . new (@filename).read @ui.editor_window.setText text # # "" textChanged() @ui.b_save.setEnabled false end end def enable_save @ui.b_save.setEnabled true end def file_save if @filename f = File .new @filename, 'w' f. puts @ui.editor_window.toPlainText f.close end end end if $ 0 == __FILE__ app = Qt::Application. new (ARGV) myapp = StartQT4 .new myapp.show app. exec end



  15. Copy Source | Copy HTML require 'Qt4' require 'editor.rb' class StartQT4 < Qt::MainWindow slots 'file_dialog()' , 'file_save()' , 'enable_save()' def initialize parent= nil super @ui = Ui_Notepad.new @ui.setupUi self Qt:: Object .connect(@ui.b_open, SIGNAL( 'clicked()' ), self , SLOT( 'file_dialog()' )) Qt:: Object .connect(@ui.b_save, SIGNAL( 'clicked()' ), self , SLOT( 'file_save()' )) Qt:: Object .connect(@ui.editor_window, SIGNAL( 'textChanged()' ), self , SLOT( 'enable_save()' )) end def file_dialog f = Qt::FileDialog if @filename = f.getOpenFileName text = File . new (@filename).read @ui.editor_window.setText text # # "" textChanged() @ui.b_save.setEnabled false end end def enable_save @ui.b_save.setEnabled true end def file_save if @filename f = File .new @filename, 'w' f. puts @ui.editor_window.toPlainText f.close end end end if $ 0 == __FILE__ app = Qt::Application. new (ARGV) myapp = StartQT4 .new myapp.show app. exec end



  17. Copy Source | Copy HTML require 'Qt4' require 'editor.rb' class StartQT4 < Qt::MainWindow slots 'file_dialog()' , 'file_save()' , 'enable_save()' def initialize parent= nil super @ui = Ui_Notepad.new @ui.setupUi self Qt:: Object .connect(@ui.b_open, SIGNAL( 'clicked()' ), self , SLOT( 'file_dialog()' )) Qt:: Object .connect(@ui.b_save, SIGNAL( 'clicked()' ), self , SLOT( 'file_save()' )) Qt:: Object .connect(@ui.editor_window, SIGNAL( 'textChanged()' ), self , SLOT( 'enable_save()' )) end def file_dialog f = Qt::FileDialog if @filename = f.getOpenFileName text = File . new (@filename).read @ui.editor_window.setText text # # "" textChanged() @ui.b_save.setEnabled false end end def enable_save @ui.b_save.setEnabled true end def file_save if @filename f = File .new @filename, 'w' f. puts @ui.editor_window.toPlainText f.close end end end if $ 0 == __FILE__ app = Qt::Application. new (ARGV) myapp = StartQT4 .new myapp.show app. exec end



  18. Copy Source | Copy HTML require 'Qt4' require 'editor.rb' class StartQT4 < Qt::MainWindow slots 'file_dialog()' , 'file_save()' , 'enable_save()' def initialize parent= nil super @ui = Ui_Notepad.new @ui.setupUi self Qt:: Object .connect(@ui.b_open, SIGNAL( 'clicked()' ), self , SLOT( 'file_dialog()' )) Qt:: Object .connect(@ui.b_save, SIGNAL( 'clicked()' ), self , SLOT( 'file_save()' )) Qt:: Object .connect(@ui.editor_window, SIGNAL( 'textChanged()' ), self , SLOT( 'enable_save()' )) end def file_dialog f = Qt::FileDialog if @filename = f.getOpenFileName text = File . new (@filename).read @ui.editor_window.setText text # # "" textChanged() @ui.b_save.setEnabled false end end def enable_save @ui.b_save.setEnabled true end def file_save if @filename f = File .new @filename, 'w' f. puts @ui.editor_window.toPlainText f.close end end end if $ 0 == __FILE__ app = Qt::Application. new (ARGV) myapp = StartQT4 .new myapp.show app. exec end



  19. Copy Source | Copy HTML require 'Qt4' require 'editor.rb' class StartQT4 < Qt::MainWindow slots 'file_dialog()' , 'file_save()' , 'enable_save()' def initialize parent= nil super @ui = Ui_Notepad.new @ui.setupUi self Qt:: Object .connect(@ui.b_open, SIGNAL( 'clicked()' ), self , SLOT( 'file_dialog()' )) Qt:: Object .connect(@ui.b_save, SIGNAL( 'clicked()' ), self , SLOT( 'file_save()' )) Qt:: Object .connect(@ui.editor_window, SIGNAL( 'textChanged()' ), self , SLOT( 'enable_save()' )) end def file_dialog f = Qt::FileDialog if @filename = f.getOpenFileName text = File . new (@filename).read @ui.editor_window.setText text # # "" textChanged() @ui.b_save.setEnabled false end end def enable_save @ui.b_save.setEnabled true end def file_save if @filename f = File .new @filename, 'w' f. puts @ui.editor_window.toPlainText f.close end end end if $ 0 == __FILE__ app = Qt::Application. new (ARGV) myapp = StartQT4 .new myapp.show app. exec end



  20. Copy Source | Copy HTML require 'Qt4' require 'editor.rb' class StartQT4 < Qt::MainWindow slots 'file_dialog()' , 'file_save()' , 'enable_save()' def initialize parent= nil super @ui = Ui_Notepad.new @ui.setupUi self Qt:: Object .connect(@ui.b_open, SIGNAL( 'clicked()' ), self , SLOT( 'file_dialog()' )) Qt:: Object .connect(@ui.b_save, SIGNAL( 'clicked()' ), self , SLOT( 'file_save()' )) Qt:: Object .connect(@ui.editor_window, SIGNAL( 'textChanged()' ), self , SLOT( 'enable_save()' )) end def file_dialog f = Qt::FileDialog if @filename = f.getOpenFileName text = File . new (@filename).read @ui.editor_window.setText text # # "" textChanged() @ui.b_save.setEnabled false end end def enable_save @ui.b_save.setEnabled true end def file_save if @filename f = File .new @filename, 'w' f. puts @ui.editor_window.toPlainText f.close end end end if $ 0 == __FILE__ app = Qt::Application. new (ARGV) myapp = StartQT4 .new myapp.show app. exec end



  21. Copy Source | Copy HTML require 'Qt4' require 'editor.rb' class StartQT4 < Qt::MainWindow slots 'file_dialog()' , 'file_save()' , 'enable_save()' def initialize parent= nil super @ui = Ui_Notepad.new @ui.setupUi self Qt:: Object .connect(@ui.b_open, SIGNAL( 'clicked()' ), self , SLOT( 'file_dialog()' )) Qt:: Object .connect(@ui.b_save, SIGNAL( 'clicked()' ), self , SLOT( 'file_save()' )) Qt:: Object .connect(@ui.editor_window, SIGNAL( 'textChanged()' ), self , SLOT( 'enable_save()' )) end def file_dialog f = Qt::FileDialog if @filename = f.getOpenFileName text = File . new (@filename).read @ui.editor_window.setText text # # "" textChanged() @ui.b_save.setEnabled false end end def enable_save @ui.b_save.setEnabled true end def file_save if @filename f = File .new @filename, 'w' f. puts @ui.editor_window.toPlainText f.close end end end if $ 0 == __FILE__ app = Qt::Application. new (ARGV) myapp = StartQT4 .new myapp.show app. exec end



  22. Copy Source | Copy HTML require 'Qt4' require 'editor.rb' class StartQT4 < Qt::MainWindow slots 'file_dialog()' , 'file_save()' , 'enable_save()' def initialize parent= nil super @ui = Ui_Notepad.new @ui.setupUi self Qt:: Object .connect(@ui.b_open, SIGNAL( 'clicked()' ), self , SLOT( 'file_dialog()' )) Qt:: Object .connect(@ui.b_save, SIGNAL( 'clicked()' ), self , SLOT( 'file_save()' )) Qt:: Object .connect(@ui.editor_window, SIGNAL( 'textChanged()' ), self , SLOT( 'enable_save()' )) end def file_dialog f = Qt::FileDialog if @filename = f.getOpenFileName text = File . new (@filename).read @ui.editor_window.setText text # # "" textChanged() @ui.b_save.setEnabled false end end def enable_save @ui.b_save.setEnabled true end def file_save if @filename f = File .new @filename, 'w' f. puts @ui.editor_window.toPlainText f.close end end end if $ 0 == __FILE__ app = Qt::Application. new (ARGV) myapp = StartQT4 .new myapp.show app. exec end



  23. Copy Source | Copy HTML require 'Qt4' require 'editor.rb' class StartQT4 < Qt::MainWindow slots 'file_dialog()' , 'file_save()' , 'enable_save()' def initialize parent= nil super @ui = Ui_Notepad.new @ui.setupUi self Qt:: Object .connect(@ui.b_open, SIGNAL( 'clicked()' ), self , SLOT( 'file_dialog()' )) Qt:: Object .connect(@ui.b_save, SIGNAL( 'clicked()' ), self , SLOT( 'file_save()' )) Qt:: Object .connect(@ui.editor_window, SIGNAL( 'textChanged()' ), self , SLOT( 'enable_save()' )) end def file_dialog f = Qt::FileDialog if @filename = f.getOpenFileName text = File . new (@filename).read @ui.editor_window.setText text # # "" textChanged() @ui.b_save.setEnabled false end end def enable_save @ui.b_save.setEnabled true end def file_save if @filename f = File .new @filename, 'w' f. puts @ui.editor_window.toPlainText f.close end end end if $ 0 == __FILE__ app = Qt::Application. new (ARGV) myapp = StartQT4 .new myapp.show app. exec end



  24. Copy Source | Copy HTML require 'Qt4' require 'editor.rb' class StartQT4 < Qt::MainWindow slots 'file_dialog()' , 'file_save()' , 'enable_save()' def initialize parent= nil super @ui = Ui_Notepad.new @ui.setupUi self Qt:: Object .connect(@ui.b_open, SIGNAL( 'clicked()' ), self , SLOT( 'file_dialog()' )) Qt:: Object .connect(@ui.b_save, SIGNAL( 'clicked()' ), self , SLOT( 'file_save()' )) Qt:: Object .connect(@ui.editor_window, SIGNAL( 'textChanged()' ), self , SLOT( 'enable_save()' )) end def file_dialog f = Qt::FileDialog if @filename = f.getOpenFileName text = File . new (@filename).read @ui.editor_window.setText text # # "" textChanged() @ui.b_save.setEnabled false end end def enable_save @ui.b_save.setEnabled true end def file_save if @filename f = File .new @filename, 'w' f. puts @ui.editor_window.toPlainText f.close end end end if $ 0 == __FILE__ app = Qt::Application. new (ARGV) myapp = StartQT4 .new myapp.show app. exec end



  25. Copy Source | Copy HTML require 'Qt4' require 'editor.rb' class StartQT4 < Qt::MainWindow slots 'file_dialog()' , 'file_save()' , 'enable_save()' def initialize parent= nil super @ui = Ui_Notepad.new @ui.setupUi self Qt:: Object .connect(@ui.b_open, SIGNAL( 'clicked()' ), self , SLOT( 'file_dialog()' )) Qt:: Object .connect(@ui.b_save, SIGNAL( 'clicked()' ), self , SLOT( 'file_save()' )) Qt:: Object .connect(@ui.editor_window, SIGNAL( 'textChanged()' ), self , SLOT( 'enable_save()' )) end def file_dialog f = Qt::FileDialog if @filename = f.getOpenFileName text = File . new (@filename).read @ui.editor_window.setText text # # "" textChanged() @ui.b_save.setEnabled false end end def enable_save @ui.b_save.setEnabled true end def file_save if @filename f = File .new @filename, 'w' f. puts @ui.editor_window.toPlainText f.close end end end if $ 0 == __FILE__ app = Qt::Application. new (ARGV) myapp = StartQT4 .new myapp.show app. exec end



  26. Copy Source | Copy HTML require 'Qt4' require 'editor.rb' class StartQT4 < Qt::MainWindow slots 'file_dialog()' , 'file_save()' , 'enable_save()' def initialize parent= nil super @ui = Ui_Notepad.new @ui.setupUi self Qt:: Object .connect(@ui.b_open, SIGNAL( 'clicked()' ), self , SLOT( 'file_dialog()' )) Qt:: Object .connect(@ui.b_save, SIGNAL( 'clicked()' ), self , SLOT( 'file_save()' )) Qt:: Object .connect(@ui.editor_window, SIGNAL( 'textChanged()' ), self , SLOT( 'enable_save()' )) end def file_dialog f = Qt::FileDialog if @filename = f.getOpenFileName text = File . new (@filename).read @ui.editor_window.setText text # # "" textChanged() @ui.b_save.setEnabled false end end def enable_save @ui.b_save.setEnabled true end def file_save if @filename f = File .new @filename, 'w' f. puts @ui.editor_window.toPlainText f.close end end end if $ 0 == __FILE__ app = Qt::Application. new (ARGV) myapp = StartQT4 .new myapp.show app. exec end



  28. Copy Source | Copy HTML require 'Qt4' require 'editor.rb' class StartQT4 < Qt::MainWindow slots 'file_dialog()' , 'file_save()' , 'enable_save()' def initialize parent= nil super @ui = Ui_Notepad.new @ui.setupUi self Qt:: Object .connect(@ui.b_open, SIGNAL( 'clicked()' ), self , SLOT( 'file_dialog()' )) Qt:: Object .connect(@ui.b_save, SIGNAL( 'clicked()' ), self , SLOT( 'file_save()' )) Qt:: Object .connect(@ui.editor_window, SIGNAL( 'textChanged()' ), self , SLOT( 'enable_save()' )) end def file_dialog f = Qt::FileDialog if @filename = f.getOpenFileName text = File . new (@filename).read @ui.editor_window.setText text # # "" textChanged() @ui.b_save.setEnabled false end end def enable_save @ui.b_save.setEnabled true end def file_save if @filename f = File .new @filename, 'w' f. puts @ui.editor_window.toPlainText f.close end end end if $ 0 == __FILE__ app = Qt::Application. new (ARGV) myapp = StartQT4 .new myapp.show app. exec end



  29. Copy Source | Copy HTML require 'Qt4' require 'editor.rb' class StartQT4 < Qt::MainWindow slots 'file_dialog()' , 'file_save()' , 'enable_save()' def initialize parent= nil super @ui = Ui_Notepad.new @ui.setupUi self Qt:: Object .connect(@ui.b_open, SIGNAL( 'clicked()' ), self , SLOT( 'file_dialog()' )) Qt:: Object .connect(@ui.b_save, SIGNAL( 'clicked()' ), self , SLOT( 'file_save()' )) Qt:: Object .connect(@ui.editor_window, SIGNAL( 'textChanged()' ), self , SLOT( 'enable_save()' )) end def file_dialog f = Qt::FileDialog if @filename = f.getOpenFileName text = File . new (@filename).read @ui.editor_window.setText text # # "" textChanged() @ui.b_save.setEnabled false end end def enable_save @ui.b_save.setEnabled true end def file_save if @filename f = File .new @filename, 'w' f. puts @ui.editor_window.toPlainText f.close end end end if $ 0 == __FILE__ app = Qt::Application. new (ARGV) myapp = StartQT4 .new myapp.show app. exec end



  30. Copy Source | Copy HTML require 'Qt4' require 'editor.rb' class StartQT4 < Qt::MainWindow slots 'file_dialog()' , 'file_save()' , 'enable_save()' def initialize parent= nil super @ui = Ui_Notepad.new @ui.setupUi self Qt:: Object .connect(@ui.b_open, SIGNAL( 'clicked()' ), self , SLOT( 'file_dialog()' )) Qt:: Object .connect(@ui.b_save, SIGNAL( 'clicked()' ), self , SLOT( 'file_save()' )) Qt:: Object .connect(@ui.editor_window, SIGNAL( 'textChanged()' ), self , SLOT( 'enable_save()' )) end def file_dialog f = Qt::FileDialog if @filename = f.getOpenFileName text = File . new (@filename).read @ui.editor_window.setText text # # "" textChanged() @ui.b_save.setEnabled false end end def enable_save @ui.b_save.setEnabled true end def file_save if @filename f = File .new @filename, 'w' f. puts @ui.editor_window.toPlainText f.close end end end if $ 0 == __FILE__ app = Qt::Application. new (ARGV) myapp = StartQT4 .new myapp.show app. exec end



  32. Copy Source | Copy HTML require 'Qt4' require 'editor.rb' class StartQT4 < Qt::MainWindow slots 'file_dialog()' , 'file_save()' , 'enable_save()' def initialize parent= nil super @ui = Ui_Notepad.new @ui.setupUi self Qt:: Object .connect(@ui.b_open, SIGNAL( 'clicked()' ), self , SLOT( 'file_dialog()' )) Qt:: Object .connect(@ui.b_save, SIGNAL( 'clicked()' ), self , SLOT( 'file_save()' )) Qt:: Object .connect(@ui.editor_window, SIGNAL( 'textChanged()' ), self , SLOT( 'enable_save()' )) end def file_dialog f = Qt::FileDialog if @filename = f.getOpenFileName text = File . new (@filename).read @ui.editor_window.setText text # # "" textChanged() @ui.b_save.setEnabled false end end def enable_save @ui.b_save.setEnabled true end def file_save if @filename f = File .new @filename, 'w' f. puts @ui.editor_window.toPlainText f.close end end end if $ 0 == __FILE__ app = Qt::Application. new (ARGV) myapp = StartQT4 .new myapp.show app. exec end



  33. Copy Source | Copy HTML require 'Qt4' require 'editor.rb' class StartQT4 < Qt::MainWindow slots 'file_dialog()' , 'file_save()' , 'enable_save()' def initialize parent= nil super @ui = Ui_Notepad.new @ui.setupUi self Qt:: Object .connect(@ui.b_open, SIGNAL( 'clicked()' ), self , SLOT( 'file_dialog()' )) Qt:: Object .connect(@ui.b_save, SIGNAL( 'clicked()' ), self , SLOT( 'file_save()' )) Qt:: Object .connect(@ui.editor_window, SIGNAL( 'textChanged()' ), self , SLOT( 'enable_save()' )) end def file_dialog f = Qt::FileDialog if @filename = f.getOpenFileName text = File . new (@filename).read @ui.editor_window.setText text # # "" textChanged() @ui.b_save.setEnabled false end end def enable_save @ui.b_save.setEnabled true end def file_save if @filename f = File .new @filename, 'w' f. puts @ui.editor_window.toPlainText f.close end end end if $ 0 == __FILE__ app = Qt::Application. new (ARGV) myapp = StartQT4 .new myapp.show app. exec end



  34. Copy Source | Copy HTML require 'Qt4' require 'editor.rb' class StartQT4 < Qt::MainWindow slots 'file_dialog()' , 'file_save()' , 'enable_save()' def initialize parent= nil super @ui = Ui_Notepad.new @ui.setupUi self Qt:: Object .connect(@ui.b_open, SIGNAL( 'clicked()' ), self , SLOT( 'file_dialog()' )) Qt:: Object .connect(@ui.b_save, SIGNAL( 'clicked()' ), self , SLOT( 'file_save()' )) Qt:: Object .connect(@ui.editor_window, SIGNAL( 'textChanged()' ), self , SLOT( 'enable_save()' )) end def file_dialog f = Qt::FileDialog if @filename = f.getOpenFileName text = File . new (@filename).read @ui.editor_window.setText text # # "" textChanged() @ui.b_save.setEnabled false end end def enable_save @ui.b_save.setEnabled true end def file_save if @filename f = File .new @filename, 'w' f. puts @ui.editor_window.toPlainText f.close end end end if $ 0 == __FILE__ app = Qt::Application. new (ARGV) myapp = StartQT4 .new myapp.show app. exec end



  35. Copy Source | Copy HTML require 'Qt4' require 'editor.rb' class StartQT4 < Qt::MainWindow slots 'file_dialog()' , 'file_save()' , 'enable_save()' def initialize parent= nil super @ui = Ui_Notepad.new @ui.setupUi self Qt:: Object .connect(@ui.b_open, SIGNAL( 'clicked()' ), self , SLOT( 'file_dialog()' )) Qt:: Object .connect(@ui.b_save, SIGNAL( 'clicked()' ), self , SLOT( 'file_save()' )) Qt:: Object .connect(@ui.editor_window, SIGNAL( 'textChanged()' ), self , SLOT( 'enable_save()' )) end def file_dialog f = Qt::FileDialog if @filename = f.getOpenFileName text = File . new (@filename).read @ui.editor_window.setText text # # "" textChanged() @ui.b_save.setEnabled false end end def enable_save @ui.b_save.setEnabled true end def file_save if @filename f = File .new @filename, 'w' f. puts @ui.editor_window.toPlainText f.close end end end if $ 0 == __FILE__ app = Qt::Application. new (ARGV) myapp = StartQT4 .new myapp.show app. exec end



  36. Copy Source | Copy HTML require 'Qt4' require 'editor.rb' class StartQT4 < Qt::MainWindow slots 'file_dialog()' , 'file_save()' , 'enable_save()' def initialize parent= nil super @ui = Ui_Notepad.new @ui.setupUi self Qt:: Object .connect(@ui.b_open, SIGNAL( 'clicked()' ), self , SLOT( 'file_dialog()' )) Qt:: Object .connect(@ui.b_save, SIGNAL( 'clicked()' ), self , SLOT( 'file_save()' )) Qt:: Object .connect(@ui.editor_window, SIGNAL( 'textChanged()' ), self , SLOT( 'enable_save()' )) end def file_dialog f = Qt::FileDialog if @filename = f.getOpenFileName text = File . new (@filename).read @ui.editor_window.setText text # # "" textChanged() @ui.b_save.setEnabled false end end def enable_save @ui.b_save.setEnabled true end def file_save if @filename f = File .new @filename, 'w' f. puts @ui.editor_window.toPlainText f.close end end end if $ 0 == __FILE__ app = Qt::Application. new (ARGV) myapp = StartQT4 .new myapp.show app. exec end



  37. Copy Source | Copy HTML require 'Qt4' require 'editor.rb' class StartQT4 < Qt::MainWindow slots 'file_dialog()' , 'file_save()' , 'enable_save()' def initialize parent= nil super @ui = Ui_Notepad.new @ui.setupUi self Qt:: Object .connect(@ui.b_open, SIGNAL( 'clicked()' ), self , SLOT( 'file_dialog()' )) Qt:: Object .connect(@ui.b_save, SIGNAL( 'clicked()' ), self , SLOT( 'file_save()' )) Qt:: Object .connect(@ui.editor_window, SIGNAL( 'textChanged()' ), self , SLOT( 'enable_save()' )) end def file_dialog f = Qt::FileDialog if @filename = f.getOpenFileName text = File . new (@filename).read @ui.editor_window.setText text # # "" textChanged() @ui.b_save.setEnabled false end end def enable_save @ui.b_save.setEnabled true end def file_save if @filename f = File .new @filename, 'w' f. puts @ui.editor_window.toPlainText f.close end end end if $ 0 == __FILE__ app = Qt::Application. new (ARGV) myapp = StartQT4 .new myapp.show app. exec end



  38. Copy Source | Copy HTML require 'Qt4' require 'editor.rb' class StartQT4 < Qt::MainWindow slots 'file_dialog()' , 'file_save()' , 'enable_save()' def initialize parent= nil super @ui = Ui_Notepad.new @ui.setupUi self Qt:: Object .connect(@ui.b_open, SIGNAL( 'clicked()' ), self , SLOT( 'file_dialog()' )) Qt:: Object .connect(@ui.b_save, SIGNAL( 'clicked()' ), self , SLOT( 'file_save()' )) Qt:: Object .connect(@ui.editor_window, SIGNAL( 'textChanged()' ), self , SLOT( 'enable_save()' )) end def file_dialog f = Qt::FileDialog if @filename = f.getOpenFileName text = File . new (@filename).read @ui.editor_window.setText text # # "" textChanged() @ui.b_save.setEnabled false end end def enable_save @ui.b_save.setEnabled true end def file_save if @filename f = File .new @filename, 'w' f. puts @ui.editor_window.toPlainText f.close end end end if $ 0 == __FILE__ app = Qt::Application. new (ARGV) myapp = StartQT4 .new myapp.show app. exec end



  39. Copy Source | Copy HTML require 'Qt4' require 'editor.rb' class StartQT4 < Qt::MainWindow slots 'file_dialog()' , 'file_save()' , 'enable_save()' def initialize parent= nil super @ui = Ui_Notepad.new @ui.setupUi self Qt:: Object .connect(@ui.b_open, SIGNAL( 'clicked()' ), self , SLOT( 'file_dialog()' )) Qt:: Object .connect(@ui.b_save, SIGNAL( 'clicked()' ), self , SLOT( 'file_save()' )) Qt:: Object .connect(@ui.editor_window, SIGNAL( 'textChanged()' ), self , SLOT( 'enable_save()' )) end def file_dialog f = Qt::FileDialog if @filename = f.getOpenFileName text = File . new (@filename).read @ui.editor_window.setText text # # "" textChanged() @ui.b_save.setEnabled false end end def enable_save @ui.b_save.setEnabled true end def file_save if @filename f = File .new @filename, 'w' f. puts @ui.editor_window.toPlainText f.close end end end if $ 0 == __FILE__ app = Qt::Application. new (ARGV) myapp = StartQT4 .new myapp.show app. exec end



  41. Copy Source | Copy HTML require 'Qt4' require 'editor.rb' class StartQT4 < Qt::MainWindow slots 'file_dialog()' , 'file_save()' , 'enable_save()' def initialize parent= nil super @ui = Ui_Notepad.new @ui.setupUi self Qt:: Object .connect(@ui.b_open, SIGNAL( 'clicked()' ), self , SLOT( 'file_dialog()' )) Qt:: Object .connect(@ui.b_save, SIGNAL( 'clicked()' ), self , SLOT( 'file_save()' )) Qt:: Object .connect(@ui.editor_window, SIGNAL( 'textChanged()' ), self , SLOT( 'enable_save()' )) end def file_dialog f = Qt::FileDialog if @filename = f.getOpenFileName text = File . new (@filename).read @ui.editor_window.setText text # # "" textChanged() @ui.b_save.setEnabled false end end def enable_save @ui.b_save.setEnabled true end def file_save if @filename f = File .new @filename, 'w' f. puts @ui.editor_window.toPlainText f.close end end end if $ 0 == __FILE__ app = Qt::Application. new (ARGV) myapp = StartQT4 .new myapp.show app. exec end



  42. Copy Source | Copy HTML require 'Qt4' require 'editor.rb' class StartQT4 < Qt::MainWindow slots 'file_dialog()' , 'file_save()' , 'enable_save()' def initialize parent= nil super @ui = Ui_Notepad.new @ui.setupUi self Qt:: Object .connect(@ui.b_open, SIGNAL( 'clicked()' ), self , SLOT( 'file_dialog()' )) Qt:: Object .connect(@ui.b_save, SIGNAL( 'clicked()' ), self , SLOT( 'file_save()' )) Qt:: Object .connect(@ui.editor_window, SIGNAL( 'textChanged()' ), self , SLOT( 'enable_save()' )) end def file_dialog f = Qt::FileDialog if @filename = f.getOpenFileName text = File . new (@filename).read @ui.editor_window.setText text # # "" textChanged() @ui.b_save.setEnabled false end end def enable_save @ui.b_save.setEnabled true end def file_save if @filename f = File .new @filename, 'w' f. puts @ui.editor_window.toPlainText f.close end end end if $ 0 == __FILE__ app = Qt::Application. new (ARGV) myapp = StartQT4 .new myapp.show app. exec end



  43. Copy Source | Copy HTML require 'Qt4' require 'editor.rb' class StartQT4 < Qt::MainWindow slots 'file_dialog()' , 'file_save()' , 'enable_save()' def initialize parent= nil super @ui = Ui_Notepad.new @ui.setupUi self Qt:: Object .connect(@ui.b_open, SIGNAL( 'clicked()' ), self , SLOT( 'file_dialog()' )) Qt:: Object .connect(@ui.b_save, SIGNAL( 'clicked()' ), self , SLOT( 'file_save()' )) Qt:: Object .connect(@ui.editor_window, SIGNAL( 'textChanged()' ), self , SLOT( 'enable_save()' )) end def file_dialog f = Qt::FileDialog if @filename = f.getOpenFileName text = File . new (@filename).read @ui.editor_window.setText text # # "" textChanged() @ui.b_save.setEnabled false end end def enable_save @ui.b_save.setEnabled true end def file_save if @filename f = File .new @filename, 'w' f. puts @ui.editor_window.toPlainText f.close end end end if $ 0 == __FILE__ app = Qt::Application. new (ARGV) myapp = StartQT4 .new myapp.show app. exec end



  44. Copy Source | Copy HTML require 'Qt4' require 'editor.rb' class StartQT4 < Qt::MainWindow slots 'file_dialog()' , 'file_save()' , 'enable_save()' def initialize parent= nil super @ui = Ui_Notepad.new @ui.setupUi self Qt:: Object .connect(@ui.b_open, SIGNAL( 'clicked()' ), self , SLOT( 'file_dialog()' )) Qt:: Object .connect(@ui.b_save, SIGNAL( 'clicked()' ), self , SLOT( 'file_save()' )) Qt:: Object .connect(@ui.editor_window, SIGNAL( 'textChanged()' ), self , SLOT( 'enable_save()' )) end def file_dialog f = Qt::FileDialog if @filename = f.getOpenFileName text = File . new (@filename).read @ui.editor_window.setText text # # "" textChanged() @ui.b_save.setEnabled false end end def enable_save @ui.b_save.setEnabled true end def file_save if @filename f = File .new @filename, 'w' f. puts @ui.editor_window.toPlainText f.close end end end if $ 0 == __FILE__ app = Qt::Application. new (ARGV) myapp = StartQT4 .new myapp.show app. exec end



  45. Copy Source | Copy HTML require 'Qt4' require 'editor.rb' class StartQT4 < Qt::MainWindow slots 'file_dialog()' , 'file_save()' , 'enable_save()' def initialize parent= nil super @ui = Ui_Notepad.new @ui.setupUi self Qt:: Object .connect(@ui.b_open, SIGNAL( 'clicked()' ), self , SLOT( 'file_dialog()' )) Qt:: Object .connect(@ui.b_save, SIGNAL( 'clicked()' ), self , SLOT( 'file_save()' )) Qt:: Object .connect(@ui.editor_window, SIGNAL( 'textChanged()' ), self , SLOT( 'enable_save()' )) end def file_dialog f = Qt::FileDialog if @filename = f.getOpenFileName text = File . new (@filename).read @ui.editor_window.setText text # # "" textChanged() @ui.b_save.setEnabled false end end def enable_save @ui.b_save.setEnabled true end def file_save if @filename f = File .new @filename, 'w' f. puts @ui.editor_window.toPlainText f.close end end end if $ 0 == __FILE__ app = Qt::Application. new (ARGV) myapp = StartQT4 .new myapp.show app. exec end



  46. Copy Source | Copy HTML require 'Qt4' require 'editor.rb' class StartQT4 < Qt::MainWindow slots 'file_dialog()' , 'file_save()' , 'enable_save()' def initialize parent= nil super @ui = Ui_Notepad.new @ui.setupUi self Qt:: Object .connect(@ui.b_open, SIGNAL( 'clicked()' ), self , SLOT( 'file_dialog()' )) Qt:: Object .connect(@ui.b_save, SIGNAL( 'clicked()' ), self , SLOT( 'file_save()' )) Qt:: Object .connect(@ui.editor_window, SIGNAL( 'textChanged()' ), self , SLOT( 'enable_save()' )) end def file_dialog f = Qt::FileDialog if @filename = f.getOpenFileName text = File . new (@filename).read @ui.editor_window.setText text # # "" textChanged() @ui.b_save.setEnabled false end end def enable_save @ui.b_save.setEnabled true end def file_save if @filename f = File .new @filename, 'w' f. puts @ui.editor_window.toPlainText f.close end end end if $ 0 == __FILE__ app = Qt::Application. new (ARGV) myapp = StartQT4 .new myapp.show app. exec end







追加されたもの。 textEditでテキストが変更され、ボタンをアクティブにするときに呼び出されるスロットを追加しました。

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  1. Qt :: Object .connect（@ ui.editor_window、SIGNAL（ 'textChanged（）' ）、 self 、SLOT（ 'enable_save（）' ））




Copy Source | Copy HTML



  1. def enable_save
  2. @ ui.b_save.setEnabled true
  3. 終わり




file_dialogメソッドで、ファイルからtextEditにテキストを追加すると、ボタンが非アクティブになります。

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  1. @ ui.b_save.setEnabled false




ファイルを開くと、現在開いているファイルの変更は保存されません。 ダイアログボックス（メッセージボックス）を作成する必要があります。このダイアログボックスでは、「保存」、「保存しない」、「キャンセル」などの変更について尋ねられます。 これらの目的のために、MessageBoxを使用します。



メッセージボックス呼び出しは次のとおりです。

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  1. メッセージ= Qt :: MessageBox.new
  2. メッセージ。 幹部




画像



このウィンドウを設定する必要があります。 ボタンとテキストを追加します。 しかし、これをどのように行うのでしょうか？ file_dialogメソッドを編集し、変更が行われた場合はメッセージを表示する必要があります。 変更があったかどうかはどのようにしてわかりますか？ 「保存」ボタンがアクティブな場合（@ ui.b_save.idEnabled）-未保存の変更があります。 そして、変更を行います。



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  1. 「Qt4」が 必要
  2. 「editor.rb」が 必要
  4. クラス StartQT4 <Qt :: MainWindow
  6. スロット'file_dialog（）' 、 'file_save（）' 、 'enable_save（）'
  8. def 初期化親= nil
  9. スーパー
  10. @ui = Ui_Notepad.new
  11. @ ui.setupUi self
  12. Qt :: Object .connect（@ ui.b_open、SIGNAL（ ' clicked （）' ）、 self 、SLOT（ 'file_dialog（）' ））
  13. Qt :: Object .connect（@ ui.b_save、SIGNAL（ ' clicked （）' ）、 self 、SLOT（ 'file_save（）' ））
  14. Qt :: Object .connect（@ ui.editor_window、SIGNAL（ 'textChanged（）' ）、 self 、SLOT（ 'enable_save（）' ））
  15. 終わり
  17. def file_dialog
  18. 応答= false
  19. ＃ボタンテキスト：
  20. save = 'Save'
  21. discard = 「保存しない」
  22. キャンセル= 'キャンセル'
  23. ＃変更があった場合、message_boxを呼び出す
  24. if @ ui.b_save.isEnabled && @filename
  25. メッセージ= Qt :: MessageBox.new
  26. message.setText 「未保存の変更で何をすべきか？」
  27. message.setWindowTitle（ 'メモ帳' ）
  28. message.setIcon（Qt :: MessageBox.Question）
  29. message.addButton（保存、Qt :: MessageBox.AcceptRole）
  30. message.addButton（破棄、Qt :: MessageBox.DestructiveRole）
  31. message.addButton（キャンセル、Qt :: MessageBox.RejectRole）
  32. message.setDetailedText（ 「保存されていないファイルの変更：」 + @ filename.to_s）
  33. メッセージ。 幹部
  34. 応答= message.clickedButton.text
  35. ＃ファイルを保存する
  36. 応答==保存の場合
  37. file_save
  38. @ ui.b_save.setEnabled false
  39. 終わり
  40. ＃保存しない
  41. 応答==破棄の場合
  42. @ ui.b_save.setEnabled false
  43. 終わり
  44. 終わり
  45. ＃変更を保存したくない場合
  46. 応答==キャンセルしない限り
  47. f = Qt :: FileDialog
  48. if @filename = f.getOpenFileName
  49. text = File 。 new （@filename）.read
  50. @ ui.editor_window.setTextテキスト
  51. @ ui.b_save.setEnabled false
  52. 終わり
  53. 終わり
  54. 終わり
  56. def enable_save
  57. @ ui.b_save.setEnabled true
  58. 終わり
  60. def file_save
  61. @filenameの場合
  62. f = File .new @filename、 'w'
  63. f。 puts @ ui.editor_window.toPlainText
  64. f.close
  65. 終わり
  66. 終わり
  67. 終わり
  69. $ 0 == __FILE__の 場合
  70. app = Qt ::アプリケーション。 新規 （ARGV）
  71. myapp = StartQT4 .new
  72. myapp.show
  73. アプリ。 幹部
  74. 終わり




行18〜46に加えられた変更



Qt :: MessageBoxクラスの新しいインスタンスを作成し、メッセージテキスト（setText）、ウィンドウタイトルをsetWindowTitle、アイコン（setIcon）に割り当て、3つのボタンを設定します（「保存」、「保存しない」、「キャンセル」）。 2番目の引数として、ボタンのタイプ（ロール）を設定します。 これらのタイプに関する情報は、QTドキュメントに記載されています。 setDetailedTextは、「詳細の表示」ボタンをクリックしたときの詳細なメッセージ出力を設定します。 そして最後に、execメソッドを呼び出します。 message.clickedButton-押されたボタンのpushButtonタイプを返します。 この例では、このボタンのテキストを使用して操作します。

ダイアログボックスは次のようになります。



画像



サンプルのソースコードは、次の場所からダウンロードできます。

前の例： narod.ru/disk/6746280000/ruby_qt_simple_editor_1.zip.html

現在の例： narod.ru/disk/6746302000/ruby_qt_simple_editor_2.zip.html



次の例のルビーへの移植： www.rkblog.rk.edu.pl/w/p/extending-pyqt4-text-editor


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