Creating toolbar buttons - MDC

This article explains how to add a toolbar button to a Toolkit application (such as Firefox, Thunderbird, or Kompozer) using overlays. Its intended audience is extension developers with a basic knowledge of XUL and CSS. We assume that you're also familiar with the basics of creating Firefox extensions and have the Hello World extension working. Another tutorial, which walks you through the entire

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"Its intended audience is extension developers with a basic knowledge of XUL and CSS." "We assume that you're also familiar with the basics of creating Firefox extensions" …か。 | タイトル変更：「Devmo」→[MDC]

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ツールバーボタンの作り方