Apple Computer Network Router 2 Manual do Utilizador descarregar pdf (Página 100)

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CHAPTER 3

Controls

3-6 Buttons

Figure 3-5 Where to use a button named Cancel

A button named Cancel should close the view it’s in and return the application

to the state it was in before the view appeared. Cancel means “Dismiss the

operation I started, with no other effects.” A Cancel button should not be the

only button that can close a view; in such a view, use a Close box instead.

Rather than Cancel, use a text button named Stop to allow a user to halt an

operation that’s underway, especially if this button is next to a large Close box.

In that context a Cancel button may look to some users like a duplicate of the

Close box. Figure 3-6 illustrates the use of a Stop button.

Figure 3-6 A Stop button lets a user halt an operation

Don’t use Cancel with a speciﬁc actionUse Cancel with OK or Yes

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