Archive:Development/Languages/Ruby (zh TW)

cleanup

   Qt::Widget.new do

       self.window_title = 'Hello QtRuby v1.0'
       resize(200, 100)
   
       button = Qt::PushButton.new('Quit') do
           connect(SIGNAL :clicked) { Qt::Application.instance.quit }
       end

       label = Qt::Label.new('Hello Qt in the Ruby way!')
       
       self.layout = Qt::VBoxLayout.new do
           add_widget(label, 0, Qt::AlignCenter)
           add_widget(button, 0, Qt::AlignRight)
       end
       
       show
   end
   
   exec

      create_standard_status_bar_action()
      createStandardStatusBarAction()

      p1 = Qt::Point.new(5,5)   => (5, 5)
      p2 = Qt::Point.new(20,20) => (20, 20)
      p1 + p2                   => (25, 25)

      slots 'setColor(QColor)', 'slotLoad(const QString&)'..
      signals 'clicked()'..

      slots :slotLoad
      signals :clicked
       

      Qt::Object.connect( @colormenu, SIGNAL( "activated(int)" ),
                        self, SLOT( "slotColorMenu(int)" ) )

      quit_button.connect(SIGNAL :clicked) { $qApp.quit }

      emit colorChanged( black )

      quit = Qt::PushButton.new("Quit", self, "quit")

      w = MyWidget.new { setCaption("foobar") }

      w = MyWidget.new(nil) { setCaption("foobar") }

      w = MyWidget.new { |theWidget| theWidget.setCaption "foobar" }

      item2.dispose
      if item2.disposed?
      	puts "item2 is disposed"
      end

      # static Ptr findByFileContent( const QString &fileName, 
      #                               int *accuracy=0 );

      acc = Qt::Integer.new(0)
      fc = KDE::MimeType.findByFileContent("mimetype.rb", acc)


      # QFont getFont(bool * ok, const QFont&initial, 
      #               QWidget* parent = 0, const char *name = 0);		
		
      ok = Qt::Boolean.new
      font = Qt::FontDialog.getFont(ok, 
                          Qt::Font.new("Helvetica [Cronyx]", 10), 
                          self)
      if !ok.nil? 
      	# font is set to the font the user selected
      else 
      	# the user canceled the dialog
      end

      a = Qt::Application.new(ARGV)
      Qt.debug_level = Qt::DebugLevel::High
      a.loadLibrary("foo")  # Non existent method

      classname    == QApplication
      :: method == loadLibrary$
      -> methodIds == []
      candidate list:
      Possible prototypes:
          static QWidget* QApplication::widgetAt(int, int, bool)
			...

      Qt::Internal::setDebug(Qt::QtDebugChannel::QTDB_VIRTUAL)

      Qt::Internal::setDebug(Qt::QtDebugChannel::QTDB_GC)

      $ rbuic mainform.ui -x -o mainform.rb

      if $0 == __FILE__
          a = Qt::Application.new(ARGV)
          w = MainForm.new
          w.show
          a.exec
      end

      $ ruby mainform.rb

      $ rbuic4 -x -kde knotifywidgetbase.ui -o knotifywidgetbase.rb

      if $0 == __FILE__
      	about = KDE::AboutData.new("knotifywidgetbase", 
		                           "KNotifyWidgetBase", "0.1")
      	KDE::CmdLineArgs.init(ARGV, about)
        a = KDE::Application.new()
    	w = KNotifyWidgetBase.new
    	w.show
    	a.exec
      end

      require 'Qt4'
      require 'quiloader'

      a = Qt::Application.new(ARGV)
      if ARGV.length == 0
        exit
      end

      if ARGV.length == 2
        QUI::WidgetFactory.loadImages ARGV[0]
        w = QUI::WidgetFactory.create ARGV[1]
        if w.nil?
          exit
        end
        w.show()
        a.connect(a, SIGNAL('lastWindowClosed()'), a, SLOT('quit()'))
        a.exec()
      end

      require 'Qt4'
      require 'qtuitools'

      a = Qt::Application.new(ARGV)
      if ARGV.length == 0
        exit
      end

      if ARGV.length == 1
        file = Qt::File.new(ARGV[1])
        file.open(Qt::File::ReadOnly)

        loader = Qt::UiLoader.new
        window = loader.load(file, nil)
        file.close

        if (window.nil?)
          print "Error. Window is nil.\n"
          exit
        end
        window.show
        a.connect(a, SIGNAL('lastWindowClosed()'), a, SLOT('quit()'))
        a.exec
      end

	  $ rbqtapi Qt::TextEdit

	  $ rbqtapi -rsetCaption 

      $ rbkdeapi KDE::Action

#qtruby
#kde-ruby

Archive:Development/Languages/Ruby (zh TW)

Development/Languages/Ruby

QtRuby

目前 API 範圍概覽

可用呼叫

虛擬方法

屬性

Use either CamelCase or lowercase with underscore naming

運算子重載

宣告訊號（Signals）和槽（Slots）

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垃圾回收

C++ 'int*' 和 'int&' 參數型態

C++ 'bool*' 和 'bool&' 參數型態

C++ (const )(unsigned )char* 參數型態

C++ unsigned char* 函式

除錯

字串 i18n

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Qt Designer

Loading .ui files at runtime with Qt::UILoader

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