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Figure 15: Informative annotation text in the dialog
8.1.5 Do not show the effects of changes until the dialog is complete
Do not show the effects of any changes the user makes in a dialog until the dialog has been confirmed, i.e. do not
have the screen redrawn behind the dialog:
• It would be unclear whether the changes would remain if the dialog were cleared or ‘‘cleared from the
screen’’ instead of confirming the dialog.
• It does not pass the ‘‘cup-of-tea’’ test, i.e. you make some changes, leave the dialog up, come back (after
making some tea) and clear the dialog, and you may be surprised that the screen reverts to a different setup
(the original).
In this case, you can only see those changes which affect the part of the screen that is visible. Therefore, it is
not really useful.
• It is inconsistent with the behaviour of any other dialogs in the system.
8.1.6 Validation in dialogs — take the user to the line he or she needs to set
If the user closes the dialog and some settings are not validated, inform the user about the error (e.g. via Information
Banner) and move the cursor to the line that the user must reset.
8.2 Guidelines for Multipage Dialogs
A Multipage Dialog consists of a Dialog frame, title, page frame, ‘‘Tabs,’’ page labels and page content (= list of
controls). The frame of the whole dialog is a normal Dialog frame. There can be five tabs at most. The tab size depends
on the length of the label text strings. If there are five tabs and the text strings are long to the extent that they
exceed the width of the possible page label area, the tabs shrink. The ellipses appear when the word is cut.
With five tabs, the maximum tab label text string width is 104 pixels, i.e. ca. 11 characters.
With two tabs, the maximum tab label text string width is 248 pixels, i.e. ca. 27 characters.
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