Translations:Development/Tutorials/KDE3/Qt Designer and KDevelop 3.0 for Beginners/97/ja: Difference between revisions

Latest revision as of 12:48, 30 January 2012

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[http://doc.trolltech.com/3.0/signalsandslots.html Signals and Slots] are used for communication between Qt objects. The signal/slot mechanism is a central feature of Qt and probably the part that differs most from other toolkits which often use callbacks. In Qt, a signal is emitted by a widget when a particular event occurs, very often triggered by the user like for example pressing a button or writing something in a LineEdit. A slot is simply a function that is called in reponse to a particular signal.

シグナルとスロットは Qt オブジェクト間の通信に使われます。シグナル/スロット機構は Qt の核となる特徴であり、callback をよく使う他のツールキットとはおそらく一番違う部分でしょう。Qt ではシグナルはウィジットが特定のイベント (よくあるのはユーザーがボタンを押したり、LineEdit に文字を入力しる時など)が起こった時に発信されます。スロットは特定のシグナルに反応して呼び出される単なる関数です。