Development/Tutorials/Qt4 Ruby Tutorial/Chapter 04

Development/Tutorials/Qt4 Ruby Tutorial/Chapter 4

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Let There Be Widgets

Tutorial Series	Qt4 Ruby Tutorial
Previous	Tutorial 3 - Family Values
What's Next	Tutorial 5 - Building Blocks
Further Reading	n/a

Let There Be Widgets

Files:

• t4.rb

Overview

This example shows how to create your own widget, and describes how to control the minimum and maximum sizes of a widget.

require 'Qt4'

class MyWidget < Qt::Widget

 def initialize(parent = nil)
   super
   setFixedSize(200, 120)

   quit = Qt::PushButton.new(tr('Quit'), self)
   quit.setGeometry(62, 40, 75, 30)
   quit.setFont(Qt::Font.new('Times', 18, Qt::Font::Bold))

   connect(quit, SIGNAL('clicked()'), $qApp, SLOT('quit()'))
 end

end

app = Qt::Application.new(ARGV)

widget = MyWidget.new() widget.show()

app.exec()