public class KeyEvent extends TypedEvent
When a key listener is added to a control, the control is expected to take part in widget traversal. By default, all traversal keys (such as the tab key and so on) are delivered to the control. In order for a control to take part in traversal, it should listen for traversal events. Otherwise, the user can traverse into a control but not out. Note that native controls such as table and tree implement key traversal in the operating system. It is not necessary to add traversal listeners for these controls, unless you want to override the default traversal.
KeyListener
,
TraverseListener
,
Serialized FormModifier and Type | Field and Description |
---|---|
char |
character
the character represented by the key that was typed.
|
boolean |
doit
A flag indicating whether the operation should be allowed.
|
int |
keyCode
the key code of the key that was typed,
as defined by the key code constants in class
SWT . |
int |
stateMask
the state of the keyboard modifier keys at the time
the event was generated, as defined by the key code
constants in class
SWT . |
data, display, time, widget
source
Constructor and Description |
---|
KeyEvent(Event e)
Constructs a new instance of this class based on the
information in the given untyped event.
|
Modifier and Type | Method and Description |
---|---|
String |
toString()
Returns a string containing a concise, human-readable
description of the receiver.
|
getSource
public char character
public int keyCode
SWT
.
When the character field of the event is ambiguous, this field
contains the unicode value of the original character. For example,
typing Ctrl+M or Return both result in the character '\r' but the
keyCode field will also contain '\r' when Return was typed.SWT
public int stateMask
SWT
.SWT
public boolean doit
false
will cancel the operation.public KeyEvent(Event e)
e
- the untyped event containing the informationpublic String toString()
toString
in class TypedEvent
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