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caption: keyboard
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created: 20140302192136805
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modified: 20150514091459257
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tags: Widgets
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title: KeyboardWidget
type: text/vnd.tiddlywiki
! Introduction
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The keyboard widget allows [[Messages]] to be generated in response to key presses.
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! Content and Attributes
The content of the `<$keyboard>` widget is rendered normally. The keyboard shortcut only takes effect within the contained content.
|!Attribute |!Description |
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|message |The title of the [[WidgetMessage|Messages]] to generate |
|param |The parameter to be passed with the [[WidgetMessage|Messages]] |
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|key |Key string identifying the key to be trapped (see below) |
|class |A CSS class to be assigned to the generated HTML DIV element |
! Key Strings
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Key strings are made up of zero or more of the modifiers <kbd>alt</kbd>, <kbd>shift</kbd> or <kbd>ctrl</kbd> followed by the name of a key, all joined with "+" plus symbols. Key names are either the letter or digit printed on the key (eg "a" or "1"), or one of the special keys <kbd>backspace</kbd>, <kbd>tab</kbd>, <kbd>enter</kbd> or <kbd>escape</kbd>.
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For example:
```
A
shift+A
shift+escape
ctrl+enter
ctrl+shift+alt+A
```
