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java.lang.Objectcom.trolltech.qt.QSignalEmitter
com.trolltech.qt.QtJambiObject
com.trolltech.qt.core.QEvent
com.trolltech.qt.gui.QInputEvent
com.trolltech.qt.gui.QKeyEvent
public class QKeyEvent
The QKeyEvent class contains describes a key event.
Key events are sent to the widget with keyboard input focus when keys are pressed or released.
A key event contains a special accept flag that indicates whether the receiver will handle the key event. You should call ignore if the key press or release event is not handled by your widget. A key event is propagated up the parent widget chain until a widget accepts it with accept or an event filter consumes it. Key events for multimedia keys are ignored by default. You should call accept if your widget handles those events.
The QWidget::setEnable() function can be used to enable or disable mouse and keyboard events for a widget.
The event handlers QWidget::keyPressEvent() and QWidget::keyReleaseEvent() receive key events.
Nested Class Summary |
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Nested classes/interfaces inherited from class com.trolltech.qt.core.QEvent |
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QEvent.Type |
Nested classes/interfaces inherited from class com.trolltech.qt.QSignalEmitter |
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QSignalEmitter.AbstractSignal, QSignalEmitter.Signal0, QSignalEmitter.Signal1<A>, QSignalEmitter.Signal2<A,B>, QSignalEmitter.Signal3<A,B,C>, QSignalEmitter.Signal4<A,B,C,D>, QSignalEmitter.Signal5<A,B,C,D,E>, QSignalEmitter.Signal6<A,B,C,D,E,F>, QSignalEmitter.Signal7<A,B,C,D,E,F,G>, QSignalEmitter.Signal8<A,B,C,D,E,F,G,H>, QSignalEmitter.Signal9<A,B,C,D,E,F,G,H,I> |
Constructor Summary | |
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QKeyEvent(QEvent.Type type,
int key,
Qt.KeyboardModifiers modifiers)
Equivalent to QKeyEvent(type, key, modifiers, QString(), false, 1). |
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QKeyEvent(QEvent.Type type,
int key,
Qt.KeyboardModifiers modifiers,
java.lang.String text)
Equivalent to QKeyEvent(type, key, modifiers, text, false, 1). |
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QKeyEvent(QEvent.Type type,
int key,
Qt.KeyboardModifiers modifiers,
java.lang.String text,
boolean autorep)
Equivalent to QKeyEvent(type, key, modifiers, text, autorep, 1). |
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QKeyEvent(QEvent.Type type,
int key,
Qt.KeyboardModifiers modifiers,
java.lang.String text,
boolean autorep,
char count)
Constructs a key event object. |
Method Summary | |
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int |
count()
Returns the number of keys involved in this event. |
static QKeyEvent |
createExtendedKeyEvent(QEvent.Type type,
int key,
Qt.KeyboardModifiers modifiers,
int nativeScanCode,
int nativeVirtualKey,
int nativeModifiers)
Equivalent to createExtendedKeyEvent(type, key, modifiers, nativeScanCode, nativeVirtualKey, nativeModifiers, QString(), false, 1). |
static QKeyEvent |
createExtendedKeyEvent(QEvent.Type type,
int key,
Qt.KeyboardModifiers modifiers,
int nativeScanCode,
int nativeVirtualKey,
int nativeModifiers,
java.lang.String text)
Equivalent to createExtendedKeyEvent(type, key, modifiers, nativeScanCode, nativeVirtualKey, nativeModifiers, text, false, 1). |
static QKeyEvent |
createExtendedKeyEvent(QEvent.Type type,
int key,
Qt.KeyboardModifiers modifiers,
int nativeScanCode,
int nativeVirtualKey,
int nativeModifiers,
java.lang.String text,
boolean autorep)
Equivalent to createExtendedKeyEvent(type, key, modifiers, nativeScanCode, nativeVirtualKey, nativeModifiers, text, autorep, 1). |
static QKeyEvent |
createExtendedKeyEvent(QEvent.Type type,
int key,
Qt.KeyboardModifiers modifiers,
int nativeScanCode,
int nativeVirtualKey,
int nativeModifiers,
java.lang.String text,
boolean autorep,
char count)
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static QKeyEvent |
fromNativePointer(QNativePointer nativePointer)
This function returns the QKeyEvent instance pointed to by nativePointer |
boolean |
hasExtendedInfo()
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boolean |
isAutoRepeat()
Returns true if this event comes from an auto-repeating key; returns false if it comes from an initial key press. |
int |
key()
Returns the code of the key that was pressed or released. |
boolean |
matches(QKeySequence.StandardKey key)
Returns true if the key event matches the given standard key; otherwise returns false. |
Qt.KeyboardModifiers |
modifiers()
Returns the keyboard modifier flags that existed immediately after the event occurred. |
int |
nativeModifiers()
Returns the native modifiers of a key event. |
int |
nativeScanCode()
Returns the native scan code of the key event. |
int |
nativeVirtualKey()
Returns the native virtual key, or key sym of the key event. |
java.lang.String |
text()
Returns the Unicode text that this key generated. |
Methods inherited from class com.trolltech.qt.gui.QInputEvent |
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setModState |
Methods inherited from class com.trolltech.qt.core.QEvent |
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accept, ignore, isAccepted, setAccepted, setT, spontaneous, t, type |
Methods inherited from class com.trolltech.qt.QtJambiObject |
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dispose, disposed, finalize, reassignNativeResources, tr, tr, tr |
Methods inherited from class com.trolltech.qt.QSignalEmitter |
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blockSignals, disconnect, disconnect, signalsBlocked, signalSender, thread |
Methods inherited from class java.lang.Object |
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clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Methods inherited from interface com.trolltech.qt.QtJambiInterface |
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disableGarbageCollection, nativeId, nativePointer, reenableGarbageCollection, setJavaOwnership |
Constructor Detail |
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public QKeyEvent(QEvent.Type type, int key, Qt.KeyboardModifiers modifiers, java.lang.String text, boolean autorep)
Equivalent to QKeyEvent(type, key, modifiers, text, autorep, 1).
public QKeyEvent(QEvent.Type type, int key, Qt.KeyboardModifiers modifiers, java.lang.String text)
Equivalent to QKeyEvent(type, key, modifiers, text, false, 1).
public QKeyEvent(QEvent.Type type, int key, Qt.KeyboardModifiers modifiers)
Equivalent to QKeyEvent(type, key, modifiers, QString(), false, 1).
public QKeyEvent(QEvent.Type type, int key, Qt.KeyboardModifiers modifiers, java.lang.String text, boolean autorep, char count)
Constructs a key event object.
The type parameter must be QEvent::KeyPress, QEvent::KeyRelease, or QEvent::ShortcutOverride.
If key is 0, the event is not a result of a known key; for example, it may be the result of a compose sequence or keyboard macro. The modifiers holds the keyboard modifiers, and the given text is the Unicode text that the key generated. If autorep is true, isAutoRepeat will be true. count is the number of keys involved in the event.
Method Detail |
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public final int count()
Returns the number of keys involved in this event. If text is not empty, this is simply the length of the string.
public final boolean hasExtendedInfo()
public final boolean isAutoRepeat()
Returns true if this event comes from an auto-repeating key; returns false if it comes from an initial key press.
Note that if the event is a multiple-key compressed event that is partly due to auto-repeat, this function could return either true or false indeterminately.
public final int key()
Returns the code of the key that was pressed or released.
See Qt::Key for the list of keyboard codes. These codes are independent of the underlying window system. Note that this function does not distinguish between capital and non-capital letters, use the text function (returning the Unicode text the key generated) for this purpose.
A value of either 0 or Qt::Key_unknown means that the event is not the result of a known key; for example, it may be the result of a compose sequence, a keyboard macro, or due to key event compression.
public final boolean matches(QKeySequence.StandardKey key)
Returns true if the key event matches the given standard key; otherwise returns false.
public final Qt.KeyboardModifiers modifiers()
Returns the keyboard modifier flags that existed immediately after the event occurred.
Warning: This function cannot always be trusted. The user can confuse it by pressing both Shift keys simultaneously and releasing one of them, for example.
modifiers
in class QInputEvent
public final int nativeModifiers()
Returns the native modifiers of a key event. If the key event does not contain this data 0 is returned.
Note: The native modifiers may be 0, even if the key event contains extended information.
public final int nativeScanCode()
Returns the native scan code of the key event. If the key event does not contain this data 0 is returned.
Note: The native scan code may be 0, even if the key event contains extended information.
public final int nativeVirtualKey()
Returns the native virtual key, or key sym of the key event. If the key event does not contain this data 0 is returned.
Note: The native virtual key may be 0, even if the key event contains extended information.
public final java.lang.String text()
Returns the Unicode text that this key generated. The text returned can be an empty string in cases where modifier keys, such as Shift, Control, Alt, and Meta, are being pressed or released. In such cases key will contain a valid value.
public static QKeyEvent createExtendedKeyEvent(QEvent.Type type, int key, Qt.KeyboardModifiers modifiers, int nativeScanCode, int nativeVirtualKey, int nativeModifiers, java.lang.String text, boolean autorep)
Equivalent to createExtendedKeyEvent(type, key, modifiers, nativeScanCode, nativeVirtualKey, nativeModifiers, text, autorep, 1).
public static QKeyEvent createExtendedKeyEvent(QEvent.Type type, int key, Qt.KeyboardModifiers modifiers, int nativeScanCode, int nativeVirtualKey, int nativeModifiers, java.lang.String text)
Equivalent to createExtendedKeyEvent(type, key, modifiers, nativeScanCode, nativeVirtualKey, nativeModifiers, text, false, 1).
public static QKeyEvent createExtendedKeyEvent(QEvent.Type type, int key, Qt.KeyboardModifiers modifiers, int nativeScanCode, int nativeVirtualKey, int nativeModifiers)
Equivalent to createExtendedKeyEvent(type, key, modifiers, nativeScanCode, nativeVirtualKey, nativeModifiers, QString(), false, 1).
public static QKeyEvent createExtendedKeyEvent(QEvent.Type type, int key, Qt.KeyboardModifiers modifiers, int nativeScanCode, int nativeVirtualKey, int nativeModifiers, java.lang.String text, boolean autorep, char count)
public static QKeyEvent fromNativePointer(QNativePointer nativePointer)
nativePointer
- the QNativePointer of which object should be returned.
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