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java.lang.Objectcom.trolltech.qt.QSignalEmitter
com.trolltech.qt.QtJambiObject
com.trolltech.qt.core.QObject
com.trolltech.qt.gui.QWidget
com.trolltech.qt.gui.QStatusBar
public class QStatusBar
The QStatusBar class provides a horizontal bar suitable for presenting status information.
Each status indicator falls into one of three categories:
QStatusBar lets you display all three types of indicators.
Typically, a request for the status bar functionality occurs in relation to a QMainWindow object. QMainWindow provides a main application window, with a menu bar, tool bars, dock widgets and a status bar around a large central widget. The status bar can be retrieved using the QMainWindow::statusBar() function, and replaced using the QMainWindow::setStatusBar() function.
Use the showMessage slot to display a temporary message:
void MainWindow::createStatusBar() { statusBar()->showMessage(tr("Ready")); }
To remove a temporary message, use the clearMessage slot, or set a time limit when calling showMessage. For example:
void MainWindow::print() { QTextDocument *document = textEdit->document(); QPrinter printer; QPrintDialog *dlg = new QPrintDialog(&printer, this); if (dlg->exec() != QDialog::Accepted) return; document->print(&printer); statusBar()->showMessage(tr("Ready"), 2000); }
Use the currentMessage function to retrieve the temporary message currently shown. The QStatusBar class also provide the messageChanged signal which is emitted whenever the temporary status message changes.
Normal and Permanent messages are displayed by creating a small widget (QLabel, QProgressBar or even QToolButton) and then adding it to the status bar using the addWidget or the addPermanentWidget function. Use the removeWidget function to remove such messages from the status bar.
statusBar()->addWidget(new MyReadWriteIndication);
By default QStatusBar provides a QSizeGrip in the lower-right corner. You can disable it using the setSizeGripEnabled function. Use the isSizeGripEnabled function to determine the current status of the size grip.
Nested Class Summary |
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Nested classes/interfaces inherited from class com.trolltech.qt.gui.QWidget |
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QWidget.RenderFlag, QWidget.RenderFlags |
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> |
Field Summary | |
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QSignalEmitter.Signal1<java.lang.String> |
messageChanged
This signal is emitted whenever the temporary status message changes. |
Fields inherited from class com.trolltech.qt.gui.QWidget |
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customContextMenuRequested |
Constructor Summary | |
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QStatusBar()
Equivalent to QStatusBar(0). |
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QStatusBar(QWidget parent)
Constructs a status bar with a size grip and the given parent. |
Method Summary | |
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void |
addPermanentWidget(QWidget widget)
Equivalent to addPermanentWidget(widget, 0). |
void |
addPermanentWidget(QWidget widget,
int stretch)
Adds the given widget permanently to this status bar, reparenting the widget if it isn't already a child of this QStatusBar object. |
void |
addWidget(QWidget widget)
Equivalent to addWidget(widget, 0). |
void |
addWidget(QWidget widget,
int stretch)
Adds the given widget to this status bar, reparenting the widget if it isn't already a child of this QStatusBar object. |
void |
clearMessage()
Removes any temporary message being shown. |
java.lang.String |
currentMessage()
Returns the temporary message currently shown, or an empty string if there is no such message. |
boolean |
event(QEvent arg__1)
This function is reimplemented for internal reasons. |
static QStatusBar |
fromNativePointer(QNativePointer nativePointer)
This function returns the QStatusBar instance pointed to by nativePointer |
protected void |
hideOrShow()
Ensures that the right widgets are visible. |
int |
insertPermanentWidget(int index,
QWidget widget)
Equivalent to insertPermanentWidget(index, widget, 0). |
int |
insertPermanentWidget(int index,
QWidget widget,
int stretch)
Inserts the given widget at the given index permanently to this status bar, reparenting the widget if it isn't already a child of this QStatusBar object. |
int |
insertWidget(int index,
QWidget widget)
Equivalent to insertWidget(index, widget, 0). |
int |
insertWidget(int index,
QWidget widget,
int stretch)
Inserts the given widget at the given index to this status bar, reparenting the widget if it isn't already a child of this QStatusBar object. |
boolean |
isSizeGripEnabled()
Returns whether the QSizeGrip in the bottom-right corner of the status bar is enabled. |
protected void |
paintEvent(QPaintEvent arg__1)
This function is reimplemented for internal reasons. |
protected void |
reformat()
Changes the status bar's appearance to account for item changes. |
void |
removeWidget(QWidget widget)
Removes the specified widget from the status bar. |
protected void |
resizeEvent(QResizeEvent arg__1)
This function is reimplemented for internal reasons. |
void |
setSizeGripEnabled(boolean arg__1)
Sets whether the QSizeGrip in the bottom-right corner of the status bar is enabled to arg__1. |
void |
showMessage(java.lang.String text)
Equivalent to showMessage(text, 0). |
void |
showMessage(java.lang.String text,
int timeout)
Hides the normal status indications and displays the given text for the specified timeout milli-seconds (if non-zero), or until clearMessage or another showMessage is called, whichever occurs first. |
Methods inherited from class com.trolltech.qt.core.QObject |
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blockSignals, childEvent, children, connectSlotsByName, customEvent, disposeLater, dumpObjectInfo, dumpObjectTree, dynamicPropertyNames, eventFilter, findChild, findChild, findChild, findChildren, findChildren, findChildren, findChildren, installEventFilter, isWidgetType, killTimer, moveToThread, objectName, parent, property, removeEventFilter, setObjectName, setParent, setProperty, signalsBlocked, startTimer, thread, timerEvent |
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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disconnect, disconnect, signalSender |
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 |
Field Detail |
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public final QSignalEmitter.Signal1<java.lang.String> messageChanged
This signal is emitted whenever the temporary status message changes. The new temporary message is passed in the text parameter which is a null-string when the message has been removed.
Constructor Detail |
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public QStatusBar()
Equivalent to QStatusBar(0).
public QStatusBar(QWidget parent)
Constructs a status bar with a size grip and the given parent.
Method Detail |
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public final void addPermanentWidget(QWidget widget)
Equivalent to addPermanentWidget(widget, 0).
public final void addPermanentWidget(QWidget widget, int stretch)
Adds the given widget permanently to this status bar, reparenting the widget if it isn't already a child of this QStatusBar object. The stretch parameter is used to compute a suitable size for the given widget as the status bar grows and shrinks. The default stretch factor is 0, i.e giving the widget a minimum of space.
Permanently means that the widget may not be obscured by temporary messages. It is is located at the far right of the status bar.
public final void addWidget(QWidget widget)
Equivalent to addWidget(widget, 0).
public final void addWidget(QWidget widget, int stretch)
Adds the given widget to this status bar, reparenting the widget if it isn't already a child of this QStatusBar object. The stretch parameter is used to compute a suitable size for the given widget as the status bar grows and shrinks. The default stretch factor is 0, i.e giving the widget a minimum of space.
The widget is located to the far left of the first permanent widget (see addPermanentWidget) and may be obscured by temporary messages.
public final void clearMessage()
Removes any temporary message being shown.
public final java.lang.String currentMessage()
Returns the temporary message currently shown, or an empty string if there is no such message.
protected final void hideOrShow()
Ensures that the right widgets are visible.
Used by the showMessage and clearMessage functions.
public final int insertPermanentWidget(int index, QWidget widget)
Equivalent to insertPermanentWidget(index, widget, 0).
public final int insertPermanentWidget(int index, QWidget widget, int stretch)
Inserts the given widget at the given index permanently to this status bar, reparenting the widget if it isn't already a child of this QStatusBar object. If index is out of range, the widget is appended (in which case it is the actual index of the widget that is returned).
The stretch parameter is used to compute a suitable size for the given widget as the status bar grows and shrinks. The default stretch factor is 0, i.e giving the widget a minimum of space.
Permanently means that the widget may not be obscured by temporary messages. It is is located at the far right of the status bar.
public final int insertWidget(int index, QWidget widget)
Equivalent to insertWidget(index, widget, 0).
public final int insertWidget(int index, QWidget widget, int stretch)
Inserts the given widget at the given index to this status bar, reparenting the widget if it isn't already a child of this QStatusBar object. If index is out of range, the widget is appended (in which case it is the actual index of the widget that is returned).
The stretch parameter is used to compute a suitable size for the given widget as the status bar grows and shrinks. The default stretch factor is 0, i.e giving the widget a minimum of space.
The widget is located to the far left of the first permanent widget (see addPermanentWidget) and may be obscured by temporary messages.
public final boolean isSizeGripEnabled()
Returns whether the QSizeGrip in the bottom-right corner of the status bar is enabled.
The size grip is enabled by default.
protected final void reformat()
Changes the status bar's appearance to account for item changes.
Special subclasses may need this function, but geometry management will usually take care of any necessary rearrangements.
public final void removeWidget(QWidget widget)
Removes the specified widget from the status bar.
Note: This function does not delete the widget but hides it. To add the widget again, you must call both the addWidget and show functions.
public final void setSizeGripEnabled(boolean arg__1)
Sets whether the QSizeGrip in the bottom-right corner of the status bar is enabled to arg__1.
The size grip is enabled by default.
public final void showMessage(java.lang.String text)
Equivalent to showMessage(text, 0).
public final void showMessage(java.lang.String text, int timeout)
Hides the normal status indications and displays the given text for the specified timeout milli-seconds (if non-zero), or until clearMessage or another showMessage is called, whichever occurs first.
public boolean event(QEvent arg__1)
This function is reimplemented for internal reasons.
event
in class QWidget
protected void paintEvent(QPaintEvent arg__1)
This function is reimplemented for internal reasons.
paintEvent
in class QWidget
protected void resizeEvent(QResizeEvent arg__1)
This function is reimplemented for internal reasons.
resizeEvent
in class QWidget
Example
public static QStatusBar fromNativePointer(QNativePointer nativePointer)
nativePointer
- the QNativePointer of which object should be returned.
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