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<h1><a name="L008438" id="L008438">はじめの一歩</a></h1>
<p>他の ruby スクリプトと同じように書き始めます。 例えば、</p>
<pre>#!/usr/local/bin/ruby</pre>
<p>とか。一番簡単な &quot;こんにちは&quot; を表示するスクリプトはこう書けます。</p>
<pre>#!/usr/local/bin/ruby

require &quot;tk&quot;

TkLabel.new {
  text 'こんにちは'
}.pack

TkButton.new {
  text '終了'
  command 'exit'
}.pack

Tk.mainloop</pre>
<p>別の書き方をすると、 </p>
<pre>#!/usr/local/bin/ruby

require &quot;tk&quot;

TkLabel.new {
  text 'こんにちは'
  pack
}

TkButton.new {
  text '終了'
  command 'exit'
  pack
}

Tk.mainloop</pre>
<p>こんな風にも書けます。</p>
<pre>#!/usr/local/bin/ruby

require &quot;tk&quot;

TkLabel.new (Tk.root, 'text' =&gt; 'こんにちは').pack
TkButton.new (Tk.root, 'text' =&gt; '終了', 'command' =&gt; 'exit').pack

Tk.mainloop</pre>

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