Qt 3 Support Members for QWidget

The following class members are part of the Qt 3 support layer. They are provided to help you port old code to Qt 4. We advise against using them in new code.

Public Types

enum BackgroundOrigin { WidgetOrigin, ParentOrigin, WindowOrigin, AncestorOrigin }

Public Functions

QWidget ( QWidget * parent, const char * name, Qt::WindowFlags f = 0 )
Qt::BackgroundMode backgroundMode () const
QPoint backgroundOffset () const
BackgroundOrigin backgroundOrigin () const
QString caption () const
QWidget * childAt ( int x, int y, bool includeThis ) const
QWidget * childAt ( const QPoint & p, bool includeThis ) const
bool close ( bool alsoDelete )
QColorGroup colorGroup () const
void constPolish () const
void drawText ( const QPoint & p, const QString & s )
void drawText ( int x, int y, const QString & s )
void erase ()
void erase ( int x, int y, int w, int h )
void erase ( const QRect & rect )
void erase ( const QRegion & rgn )
bool hasMouse () const
const QPixmap * icon () const
QString iconText () const
void iconify ()
bool isDesktop () const
bool isDialog () const
bool isInputMethodEnabled () const
bool isPopup () const
bool isShown () const
bool isUpdatesEnabled () const
bool isVisibleToTLW () const
bool ownCursor () const
bool ownFont () const
bool ownPalette () const
QWidget * parentWidget ( bool sameWindow ) const
void polish ()
void recreate ( QWidget * parent, Qt::WindowFlags f, const QPoint & p, bool showIt = false )
void repaint ( bool b )
void repaint ( int x, int y, int w, int h, bool b )
void repaint ( const QRect & r, bool b )
void repaint ( const QRegion & rgn, bool b )
void reparent ( QWidget * parent, Qt::WindowFlags f, const QPoint & p, bool showIt = false )
void reparent ( QWidget * parent, const QPoint & p, bool showIt = false )
void setActiveWindow ()
void setBackgroundColor ( const QColor & color )
void setBackgroundMode ( Qt::BackgroundMode widgetBackground, Qt::BackgroundMode paletteBackground = Qt::PaletteBackground )
void setBackgroundOrigin ( BackgroundOrigin background )
void setBackgroundPixmap ( const QPixmap & pixmap )
void setCaption ( const QString & c )
void setEraseColor ( const QColor & color )
void setErasePixmap ( const QPixmap & pixmap )
void setFont ( const QFont & f, bool b )
void setIcon ( const QPixmap & i )
void setIconText ( const QString & it )
void setInputMethodEnabled ( bool enabled )
void setKeyCompression ( bool b )
void setPalette ( const QPalette & p, bool b )
void setPaletteBackgroundColor ( const QColor & color )
void setPaletteBackgroundPixmap ( const QPixmap & pixmap )
void setPaletteForegroundColor ( const QColor & color )
void setSizePolicy ( QSizePolicy::Policy hor, QSizePolicy::Policy ver, bool hfw )
QStyle * setStyle ( const QString & style )
void unsetFont ()
void unsetPalette ()
QRect visibleRect () const

Public Slots

void setShown ( bool shown )

Static Public Members

QWidgetMapper * wmapper ()

Member Type Documentation

enum QWidget::BackgroundOrigin

ConstantValue
QWidget::WidgetOrigin0
QWidget::ParentOrigin1
QWidget::WindowOrigin2
QWidget::AncestorOrigin3

Member Function Documentation

QWidget::QWidget ( QWidget * parent, const char * name, Qt::WindowFlags f = 0 )

This is an overloaded function.

Qt::BackgroundMode QWidget::backgroundMode () const

Returns the color role used for painting the widget's background.

Use QPalette(backgroundRole(()) instead.

See also setBackgroundMode().

QPoint QWidget::backgroundOffset () const

Always returns QPoint().

BackgroundOrigin QWidget::backgroundOrigin () const

Always returns WindowOrigin.

See also setBackgroundOrigin().

QString QWidget::caption () const

Use windowTitle() instead.

See also setCaption().

QWidget * QWidget::childAt ( int x, int y, bool includeThis ) const

Use the childAt() overload that doesn't have an includeThis parameter.

For example, if you have code like

 return widget->childAt(x, y, true);

you can rewrite it as

 QWidget *child = widget->childAt(x, y, true);
 if (child)
     return child;
 if (widget->rect().contains(x, y))
     return widget;

QWidget * QWidget::childAt ( const QPoint & p, bool includeThis ) const

Use the single point argument overload instead.

bool QWidget::close ( bool alsoDelete )

Closes the widget.

Use the no-argument overload instead.

QColorGroup QWidget::colorGroup () const

Use QColorGroup(palette()) instead.

void QWidget::constPolish () const

Use ensurePolished() instead.

void QWidget::drawText ( const QPoint & p, const QString & s )

Drawing may only take place in a QPaintEvent. Overload paintEvent() to do your drawing and call update() to schedule a replaint whenever necessary. See also QPainter.

void QWidget::drawText ( int x, int y, const QString & s )

Drawing may only take place in a QPaintEvent. Overload paintEvent() to do your drawing and call update() to schedule a replaint whenever necessary. See also QPainter.

void QWidget::erase ()

Drawing may only take place in a QPaintEvent. Overload paintEvent() to do your erasing and call update() to schedule a replaint whenever necessary. See also QPainter.

void QWidget::erase ( int x, int y, int w, int h )

Drawing may only take place in a QPaintEvent. Overload paintEvent() to do your erasing and call update() to schedule a replaint whenever necessary. See also QPainter.

void QWidget::erase ( const QRect & rect )

Drawing may only take place in a QPaintEvent. Overload paintEvent() to do your erasing and call update() to schedule a replaint whenever necessary. See also QPainter.

void QWidget::erase ( const QRegion & rgn )

This is an overloaded function.

Clear the given region, rgn.

Drawing may only take place in a QPaintEvent. Overload paintEvent() to do your erasing and call update() to schedule a replaint whenever necessary. See also QPainter.

bool QWidget::hasMouse () const

Use testAttribute(Qt::WA_UnderMouse) instead.

const QPixmap * QWidget::icon () const

Return's the widget's icon.

Use windowIcon() instead.

See also setIcon().

QString QWidget::iconText () const

Use windowIconText() instead.

See also setIconText().

void QWidget::iconify ()

Use showMinimized() instead.

bool QWidget::isDesktop () const

Use windowType() == Qt::Desktop instead.

bool QWidget::isDialog () const

Use windowType() == Qt::Dialog instead.

bool QWidget::isInputMethodEnabled () const

Use testAttribute(Qt::WA_InputMethodEnabled) instead.

bool QWidget::isPopup () const

Use windowType() == Qt::Popup instead.

bool QWidget::isShown () const

Use !isHidden() instead (notice the exclamation mark), or use isVisible() to check whether the widget is visible.

bool QWidget::isUpdatesEnabled () const

Use the updatesEnabled property instead.

bool QWidget::isVisibleToTLW () const

Use isVisible() instead.

bool QWidget::ownCursor () const

Use testAttribute(Qt::WA_SetCursor) instead.

bool QWidget::ownFont () const

Use testAttribute(Qt::WA_SetFont) instead.

bool QWidget::ownPalette () const

Use testAttribute(Qt::WA_SetPalette) instead.

QWidget * QWidget::parentWidget ( bool sameWindow ) const

Use the no-argument overload instead.

void QWidget::polish ()

Use ensurePolished() instead.

void QWidget::recreate ( QWidget * parent, Qt::WindowFlags f, const QPoint & p, bool showIt = false )

Use setParent() to change the parent or the widget's widget flags; use move() to move the widget, and use show() to show the widget.

void QWidget::repaint ( bool b )

The boolean parameter b is ignored. Use the no-argument overload instead.

void QWidget::repaint ( int x, int y, int w, int h, bool b )

The boolean parameter b is ignored. Use the four-argument overload instead.

void QWidget::repaint ( const QRect & r, bool b )

The boolean parameter b is ignored. Use the single rect-argument overload instead.

void QWidget::repaint ( const QRegion & rgn, bool b )

The boolean parameter b is ignored. Use the single region-argument overload instead.

void QWidget::reparent ( QWidget * parent, Qt::WindowFlags f, const QPoint & p, bool showIt = false )

Use setParent() to change the parent or the widget's widget flags; use move() to move the widget, and use show() to show the widget.

void QWidget::reparent ( QWidget * parent, const QPoint & p, bool showIt = false )

Use setParent() to change the parent; use move() to move the widget, and use show() to show the widget.

void QWidget::setActiveWindow ()

Use activateWindow() instead.

See also isActiveWindow().

void QWidget::setBackgroundColor ( const QColor & color )

Use the palette instead.

For example, if you have code like

 widget->setBackgroundColor(color);

you can rewrite it as

 QPalette palette;
 palette.setColor(widget->backgroundRole(), color);
 widget->setPalette(palette);

void QWidget::setBackgroundMode ( Qt::BackgroundMode widgetBackground, Qt::BackgroundMode paletteBackground = Qt::PaletteBackground )

Sets the color role used for painting the widget's background to background mode widgetBackground. The paletteBackground mode parameter is ignored.

See also backgroundMode().

void QWidget::setBackgroundOrigin ( BackgroundOrigin background )

See also backgroundOrigin().

void QWidget::setBackgroundPixmap ( const QPixmap & pixmap )

Use the palette instead.

For example, if you have code like

 widget->setBackgroundPixmap(pixmap);

you can rewrite it as

 QPalette palette;
 palette.setBrush(widget->backgroundRole(), QBrush(pixmap));
 widget->setPalette(palette);

void QWidget::setCaption ( const QString & c )

Use setWindowTitle() instead.

See also caption().

void QWidget::setEraseColor ( const QColor & color )

Use the palette instead.

For example, if you have code like

 widget->setEraseColor(color);

you can rewrite it as

 QPalette palette;
 palette.setColor(widget->backgroundRole(), color);
 widget->setPalette(palette);

void QWidget::setErasePixmap ( const QPixmap & pixmap )

Use the palette instead.

For example, if you have code like

 widget->setErasePixmap(pixmap);

you can rewrite it as

 QPalette palette;
 palette.setBrush(widget->backgroundRole(), QBrush(pixmap));
 widget->setPalette(palette);

void QWidget::setFont ( const QFont & f, bool b )

Use the single-argument overload instead.

void QWidget::setIcon ( const QPixmap & i )

Use setWindowIcon() instead.

See also icon().

void QWidget::setIconText ( const QString & it )

Use setWindowIconText() instead.

See also iconText().

void QWidget::setInputMethodEnabled ( bool enabled )

Use setAttribute(Qt::WA_InputMethodEnabled, enabled) instead.

See also isInputMethodEnabled().

void QWidget::setKeyCompression ( bool b )

Use setAttribute(Qt::WA_KeyCompression, b) instead.

void QWidget::setPalette ( const QPalette & p, bool b )

Use the single-argument overload instead.

void QWidget::setPaletteBackgroundColor ( const QColor & color )

Use the palette directly.

For example, if you have code like

 widget->setPaletteBackgroundColor(color);

you can rewrite it as

 QPalette palette;
 palette.setColor(widget->backgroundRole(), color);
 widget->setPalette(palette);

void QWidget::setPaletteBackgroundPixmap ( const QPixmap & pixmap )

Use the palette directly.

For example, if you have code like

 widget->setPaletteBackgroundPixmap(pixmap);

you can rewrite it as

 QPalette palette;
 palette.setBrush(widget->backgroundRole(), QBrush(pixmap));
 widget->setPalette(palette);

void QWidget::setPaletteForegroundColor ( const QColor & color )

Use the palette directly.

For example, if you have code like

 widget->setPaletteForegroundColor(color);

you can rewrite it as

 QPalette palette;
 palette.setColor(widget->foregroundRole(), color);
 widget->setPalette(palette);

void QWidget::setShown ( bool shown ) [slot]

Use setVisible(shown) instead.

See also isShown().

void QWidget::setSizePolicy ( QSizePolicy::Policy hor, QSizePolicy::Policy ver, bool hfw )

Use the sizePolicy property and heightForWidth() function instead.

QStyle * QWidget::setStyle ( const QString & style )

This is an overloaded function.

Sets the widget's GUI style to style using the QStyleFactory.

void QWidget::unsetFont ()

Use setFont(QFont()) instead.

void QWidget::unsetPalette ()

Use setPalette(QPalette()) instead.

QRect QWidget::visibleRect () const

Use visibleRegion() instead.

QWidgetMapper * QWidget::wmapper () [static]

The widget mapper is no longer part of the public API.

Notes provided by the Qt Community

No notes