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java.lang.Objectcom.trolltech.qt.internal.QSignalEmitterInternal
com.trolltech.qt.QSignalEmitter
com.trolltech.qt.QtJambiObject
com.trolltech.qt.core.QEvent
com.trolltech.qt.gui.QInputEvent
com.trolltech.qt.gui.QMouseEvent
public class QMouseEvent
The QMouseEvent class contains parameters that describe a mouse event. Mouse events occur when a mouse button is pressed or released inside a widget, or when the mouse cursor is moved.
Mouse move events will occur only when a mouse button is pressed down, unless mouse tracking has been enabled with QWidget::setMouseTracking()
.
Qt automatically grabs the mouse when a mouse button is pressed inside a widget; the widget will continue to receive mouse events until the last mouse button is released.
A mouse event contains a special accept flag that indicates whether the receiver wants the event. You should call ignore()
if the mouse event is not handled by your widget. A mouse event is propagated up the parent widget chain until a widget accepts it with accept()
, or an event filter consumes it.
The state of the keyboard modifier keys can be found by calling the modifiers()
function, inhertied from QInputEvent
.
The functions pos()
, x()
, and y()
give the cursor position relative to the widget that receives the mouse event. If you move the widget as a result of the mouse event, use the global position returned by globalPos()
to avoid a shaking motion.
The QWidget::setEnabled()
function can be used to enable or disable mouse and keyboard events for a widget.
Reimplement the QWidget
event handlers, QWidget::mousePressEvent()
, QWidget::mouseReleaseEvent()
, QWidget::mouseDoubleClickEvent()
, and QWidget::mouseMoveEvent()
to receive mouse events in your own widgets.
QWidget::setMouseTracking()
, and QWidget::grabMouse()
.
Nested Class Summary |
---|
Nested classes/interfaces inherited from class com.trolltech.qt.core.QEvent |
---|
QEvent.Type |
Nested classes/interfaces inherited from class com.trolltech.qt.internal.QSignalEmitterInternal |
---|
com.trolltech.qt.internal.QSignalEmitterInternal.AbstractSignalInternal |
Field Summary |
---|
Fields inherited from class com.trolltech.qt.internal.QSignalEmitterInternal |
---|
currentSender |
Constructor Summary | |
---|---|
QMouseEvent(QEvent.Type type,
QPoint pos,
QPoint globalPos,
Qt.MouseButton button,
Qt.MouseButtons buttons,
Qt.KeyboardModifier[] modifiers)
|
|
QMouseEvent(QEvent.Type type,
QPoint pos,
QPoint globalPos,
Qt.MouseButton button,
Qt.MouseButtons buttons,
Qt.KeyboardModifiers modifiers)
Constructs a mouse event object. |
|
QMouseEvent(QEvent.Type type,
QPoint pos,
Qt.MouseButton button,
Qt.MouseButtons buttons,
Qt.KeyboardModifier[] modifiers)
|
|
QMouseEvent(QEvent.Type type,
QPoint pos,
Qt.MouseButton button,
Qt.MouseButtons buttons,
Qt.KeyboardModifiers modifiers)
Constructs a mouse event object. |
Method Summary | |
---|---|
protected Qt.MouseButton |
b()
|
Qt.MouseButton |
button()
Returns the button that caused the event. |
Qt.MouseButtons |
buttons()
Returns the button state when the event was generated. |
static QMouseEvent |
createExtendedMouseEvent(QEvent.Type type,
QPointF pos,
QPoint globalPos,
Qt.MouseButton button,
Qt.MouseButtons buttons,
Qt.KeyboardModifier[] modifiers)
|
QPoint |
globalPos()
Returns the global position of the mouse cursor at the time of the event. |
int |
globalX()
Returns the global x position of the mouse cursor at the time of the event. |
int |
globalY()
Returns the global y position of the mouse cursor at the time of the event. |
protected Qt.MouseButtons |
mouseState()
|
QPoint |
pos()
Returns the position of the mouse cursor, relative to the widget that received the event. |
QPointF |
posF()
Returns the position of the mouse cursor as a QPointF , relative to the widget that received the event. |
protected void |
setB(Qt.MouseButton b)
|
protected void |
setMouseState(Qt.MouseButton[] mouseState)
|
protected void |
setMouseState(Qt.MouseButtons mouseState)
|
java.lang.String |
toString()
|
int |
x()
Returns the x position of the mouse cursor, relative to the widget that received the event. |
int |
y()
Returns the y position of the mouse cursor, relative to the widget that received the event. |
Methods inherited from class com.trolltech.qt.gui.QInputEvent |
---|
modifiers, modState, setModState, setModState |
Methods inherited from class com.trolltech.qt.core.QEvent |
---|
accept, ignore, isAccepted, registerEventType, registerEventType, setAccepted, setT, spontaneous, t, type |
Methods inherited from class com.trolltech.qt.QtJambiObject |
---|
dispose, disposed, equals, finalize, reassignNativeResources, tr, tr, tr |
Methods inherited from class com.trolltech.qt.QSignalEmitter |
---|
blockSignals, disconnect, disconnect, signalsBlocked, signalSender, thread |
Methods inherited from class com.trolltech.qt.internal.QSignalEmitterInternal |
---|
__qt_signalInitialization |
Methods inherited from class java.lang.Object |
---|
clone, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Methods inherited from interface com.trolltech.qt.QtJambiInterface |
---|
disableGarbageCollection, nativeId, nativePointer, reenableGarbageCollection, setJavaOwnership |
Constructor Detail |
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public QMouseEvent(QEvent.Type type, QPoint pos, Qt.MouseButton button, Qt.MouseButtons buttons, Qt.KeyboardModifier[] modifiers)
public QMouseEvent(QEvent.Type type, QPoint pos, Qt.MouseButton button, Qt.MouseButtons buttons, Qt.KeyboardModifiers modifiers)
The type parameter must be one of QEvent::MouseButtonPress
, QEvent::MouseButtonRelease
, QEvent::MouseButtonDblClick
, or QEvent::MouseMove
.
The position is the mouse cursor's position relative to the receiving widget. The button that caused the event is given as a value from the Qt::MouseButton
enum. If the event type is MouseMove
, the appropriate button for this event is Qt::NoButton
. The mouse and keyboard states at the time of the event are specified by buttons and modifiers.
The globalPos()
is initialized to QCursor::pos()
, which may not be appropriate. Use the other constructor to specify the global position explicitly.
public QMouseEvent(QEvent.Type type, QPoint pos, QPoint globalPos, Qt.MouseButton button, Qt.MouseButtons buttons, Qt.KeyboardModifier[] modifiers)
public QMouseEvent(QEvent.Type type, QPoint pos, QPoint globalPos, Qt.MouseButton button, Qt.MouseButtons buttons, Qt.KeyboardModifiers modifiers)
The type parameter must be QEvent::MouseButtonPress
, QEvent::MouseButtonRelease
, QEvent::MouseButtonDblClick
, or QEvent::MouseMove
.
The pos is the mouse cursor's position relative to the receiving widget. The cursor's position in global coordinates is specified by globalPos. The button that caused the event is given as a value from the Qt::MouseButton
enum. If the event type is MouseMove
, the appropriate button for this event is Qt::NoButton
. buttons is the state of all buttons at the time of the event, modifiers the state of all keyboard modifiers.
Method Detail |
---|
public final Qt.MouseButton button()
Note that the returned value is always Qt::NoButton
for mouse move events.
buttons()
, and Qt::MouseButton
.
public final Qt.MouseButtons buttons()
Qt::LeftButton
, Qt::RightButton
, Qt::MidButton
using the OR operator. For mouse move events, this is all buttons that are pressed down. For mouse press and double click events this includes the button that caused the event. For mouse release events this excludes the button that caused the event. button()
, and Qt::MouseButton
.
public final QPoint globalPos()
globalPos()
may differ a lot from the current pointer position QCursor::pos()
, and from QWidget::mapToGlobal(pos()
). globalX()
, and globalY()
.
public final int globalX()
globalY()
, and globalPos()
.
public final int globalY()
globalX()
, and globalPos()
.
public final QPoint pos()
If you move the widget as a result of the mouse event, use the global position returned by globalPos()
to avoid a shaking motion.
x()
, y()
, and globalPos()
.
public final QPointF posF()
QPointF
, relative to the widget that received the event. If you move the widget as a result of the mouse event, use the global position returned by globalPos()
to avoid a shaking motion.
x()
, y()
, pos()
, and globalPos()
.
public final int x()
y()
, and pos()
.
public final int y()
x()
, and pos()
.
public static QMouseEvent createExtendedMouseEvent(QEvent.Type type, QPointF pos, QPoint globalPos, Qt.MouseButton button, Qt.MouseButtons buttons, Qt.KeyboardModifier[] modifiers)
protected final void setMouseState(Qt.MouseButton[] mouseState)
protected final void setMouseState(Qt.MouseButtons mouseState)
protected final Qt.MouseButtons mouseState()
protected final void setB(Qt.MouseButton b)
protected final Qt.MouseButton b()
public java.lang.String toString()
toString
in class QInputEvent
|
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