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java.lang.Objectcom.trolltech.qt.QSignalEmitter
com.trolltech.qt.QtJambiObject
com.trolltech.qt.gui.QToolTip
public final class QToolTip
The QToolTip class provides tool tips (balloon help) for any widget.
The tip is a short piece of text reminding the user of the widget's function. It is drawn immediately below the given position in a distinctive black-on-yellow color combination. The tip can be any rich text formatted string.
Rich text displayed in a tool tip is implicitly word-wrapped unless specified differently with <p style='white-space:pre'>.
The simplest and most common way to set a widget's tool tip is by calling its QWidget::setToolTip() function.
It is also possible to show different tool tips for different regions of a widget, by using a QHelpEvent of type QEvent::ToolTip. Intercept the help event in your widget's event() function and call QToolTip::showText() with the text you want to display. The Tooltips example illustrates this technique.
Note that, if you want to show tooltips in an item view, the model/view architecture provides functionality to set an item's tool tip; e.g., the QTableWidgetItem::setToolTip() function. However, if you want to provide custom tool tips in an item view, you must intercept the help event in the QAbstractItemView::viewportEvent() function and handle it yourself.
The default tool tip color and font can be customized with setPalette and setFont.
Tips Example
Nested Class Summary |
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Nested classes/interfaces inherited from class com.trolltech.qt.QSignalEmitter |
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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> |
Method Summary | |
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static QFont |
font()
Returns the font used to render tooltips. |
static QToolTip |
fromNativePointer(QNativePointer nativePointer)
This function returns the QToolTip instance pointed to by nativePointer |
static void |
hideText()
Hides the tool tip. |
static QPalette |
palette()
Returns the palette used to render tooltips. |
static void |
setFont(QFont arg__1)
Sets the arg__1 used to render tooltips. |
static void |
setPalette(QPalette arg__1)
Sets the arg__1 used to render tooltips. |
static void |
showText(QPoint pos,
java.lang.String text)
Equivalent to showText(pos, text, 0). |
static void |
showText(QPoint pos,
java.lang.String text,
QWidget w)
This is analogous to calling QToolTip::showText(pos, text, w, QRect()) |
static void |
showText(QPoint pos,
java.lang.String text,
QWidget w,
QRect rect)
Shows text as a tool tip, with the global position pos as the point of interest. |
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 |
Method Detail |
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public static QFont font()
Returns the font used to render tooltips.
public static void hideText()
Hides the tool tip. This is the same as calling showText with an empty string.
public static QPalette palette()
Returns the palette used to render tooltips.
public static void setFont(QFont arg__1)
Sets the arg__1 used to render tooltips.
public static void setPalette(QPalette arg__1)
Sets the arg__1 used to render tooltips.
public static void showText(QPoint pos, java.lang.String text, QWidget w, QRect rect)
Shows text as a tool tip, with the global position pos as the point of interest. The tool tip will be shown with a platform specific offset from this point of interest.
If you specify a non-empty rect the tip will be hidden as soon as you move your cursor out of this area.
The rect is in the coordinates of the widget you specify with w. If the rect is not empty you must specify a widget. Otherwise this argument can be 0 but it is used to determine the appropriate screen on multi-head systems.
If text is empty the tool tip is hidden. If the text is the same as the currently shown tooltip, the tip will not move. You can force moving by first hiding the tip with an empty text, and then showing the new tip at the new position.
public static void showText(QPoint pos, java.lang.String text)
Equivalent to showText(pos, text, 0).
public static void showText(QPoint pos, java.lang.String text, QWidget w)
This is analogous to calling QToolTip::showText(pos, text, w, QRect())
public static QToolTip fromNativePointer(QNativePointer nativePointer)
nativePointer
- the QNativePointer of which object should be returned.
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