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Referencia de la Clase QCursor

The QCursor class provides a mouse cursor with an arbitrary shape. Más...

#include <qcursor.h>

Diagrama de herencias de QCursor
Qt Qt

Lista de todos los miembros.

Métodos públicos

 QCursor ()
 QCursor (int shape)
 QCursor (const QBitmap &bitmap, const QBitmap &mask, int hotX=-1, int hotY=-1)
 QCursor (const QPixmap &pixmap, int hotX=-1, int hotY=-1)
 QCursor (const QCursor &)
 ~QCursor ()
QCursoroperator= (const QCursor &)
int shape () const
void setShape (int)
const QBitmapbitmap () const
const QBitmapmask () const
QPoint hotSpot () const
 QCursor ()
 QCursor (int shape)
 QCursor (const QBitmap &bitmap, const QBitmap &mask, int hotX=-1, int hotY=-1)
 QCursor (const QPixmap &pixmap, int hotX=-1, int hotY=-1)
 QCursor (const QCursor &)
 ~QCursor ()
QCursoroperator= (const QCursor &)
int shape () const
void setShape (int)
const QBitmapbitmap () const
const QBitmapmask () const
QPoint hotSpot () const

Métodos públicos estáticos

static QPoint pos ()
static void setPos (int x, int y)
static void setPos (const QPoint &)
static void initialize ()
static void cleanup ()
static QPoint pos ()
static void setPos (int x, int y)
static void setPos (const QPoint &)
static void initialize ()
static void cleanup ()

Funciones relacionadas

(Observar que estas no son funciones miembro.)

QDataStreamoperator<< (QDataStream &s, const QCursor &c)
QDataStreamoperator>> (QDataStream &s, QCursor &c)

Descripción detallada

The QCursor class provides a mouse cursor with an arbitrary shape.

This class is mainly used to create mouse cursors that are associated with particular widgets and to get and set the position of the mouse cursor.

Qt has a number of standard cursor shapes, but you can also make custom cursor shapes based on a QBitmap, a mask and a hotspot.

To associate a cursor with a widget, use QWidget::setCursor(). To associate a cursor with all widgets (normally for a short period of time), use QApplication::setOverrideCursor().

To set a cursor shape use QCursor::setShape() or use the QCursor constructor which takes the shape as argument, or you can use one of the predefined cursors defined in the CursorShape enum.

If you want to create a cursor with your own bitmap, either use the QCursor constructor which takes a bitmap and a mask or the constructor which takes a pixmap as arguments.

To set or get the position of the mouse cursor use the static methods QCursor::pos() and QCursor::setPos().

cursors.png Cursor Shapes

Ver también:
QWidget GUI Design Handbook: Cursors

On X11, Qt supports the Xcursor library, which allows for full color icon themes. The table below shows the cursor name used for each Qt::CursorShape value. If a cursor cannot be found using the name shown below, a standard X11 cursor will be used instead. Note: X11 does not provide appropriate cursors for all possible Qt::CursorShape values. It is possible that some cursors will be taken from the Xcursor theme, while others will use an internal bitmap cursor.

Qt::CursorShape Values Cursor Names Qt::ArrowCursor left_ptr Qt::UpArrowCursor up_arrow Qt::CrossCursor cross Qt::WaitCursor wait Qt::BusyCursor left_ptr_watch Qt::IbeamCursor ibeam Qt::SizeVerCursor size_ver Qt::SizeHorCursor size_hor Qt::SizeBDiagCursor size_bdiag Qt::SizeFDiagCursor size_fdiag Qt::SizeAllCursor size_all Qt::SplitVCursor split_v Qt::SplitHCursor split_h Qt::PointingHandCursor pointing_hand Qt::ForbiddenCursor forbidden Qt::WhatsThisCursor whats_this


Documentación del constructor y destructor

QCursor::QCursor ( )

Constructs a cursor with the default arrow shape.

QCursor::QCursor ( int  shape)

Constructs a cursor with the specified shape.

shape can be one of

  • ArrowCursor - standard arrow cursor
  • UpArrowCursor - upwards arrow
  • CrossCursor - crosshair
  • WaitCursor - hourglass/watch
  • IbeamCursor - ibeam/text entry
  • SizeVerCursor - vertical resize
  • SizeHorCursor - horizontal resize
  • SizeBDiagCursor - diagonal resize (/)
  • SizeFDiagCursor - diagonal resize (\)
  • SizeAllCursor - all directions resize
  • BlankCursor - blank/invisible cursor
  • SplitVCursor - vertical splitting
  • SplitHCursor - horziontal splitting
  • PointingHandCursor - a pointing hand
  • BitmapCursor - userdefined bitmap cursor

These correspond to the predefined global QCursor objects.

Ver también:
setShape()

Constructs a cursor with the specified shape.

See CursorShape for a list of shapes.

Ver también:
setShape()
QCursor::QCursor ( const QBitmap bitmap,
const QBitmap mask,
int  hotX = -1,
int  hotY = -1 
)

Constructs a custom bitmap cursor.

bitmap and mask make up the bitmap. hotX and hotY define the cursor's hot spot.

If hotX is negative, it is set to the {bitmap().width()/2}. If hotY is negative, it is set to the {bitmap().height()/2}.

The cursor bitmap (B) and mask (M) bits are combined like this: B=1 and M=1 gives black. B=0 and M=1 gives white. B=0 and M=0 gives transparent. B=1 and M=0 gives an undefined result.

Use the global Qt color color0 to draw 0-pixels and color1 to draw 1-pixels in the bitmaps.

Valid cursor sizes depend on the display hardware (or the underlying window system). We recommend using 32x32 cursors, because this size is supported on all platforms. Some platforms also support 16x16, 48x48 and 64x64 cursors.

Ver también:
QBitmap::QBitmap(), QBitmap::setMask()
QCursor::QCursor ( const QPixmap pixmap,
int  hotX = -1,
int  hotY = -1 
)

Constructs a custom pixmap cursor.

pixmap is the image. It is usual to give it a mask (set using QPixmap::setMask()). hotX and hotY define the cursor's hot spot.

If hotX is negative, it is set to the {pixmap().width()/2}. If hotY is negative, it is set to the {pixmap().height()/2}.

Valid cursor sizes depend on the display hardware (or the underlying window system). We recommend using 32x32 cursors, because this size is supported on all platforms. Some platforms also support 16x16, 48x48 and 64x64 cursors.

Currently, only black-and-white pixmaps can be used.

Ver también:
QPixmap::QPixmap(), QPixmap::setMask()
QCursor::QCursor ( const QCursor c)

Constructs a copy of the cursor c.

QCursor::~QCursor ( )

Destructs the cursor.

Destroys the cursor.

QCursor::QCursor ( )
QCursor::QCursor ( int  shape)
QCursor::QCursor ( const QBitmap bitmap,
const QBitmap mask,
int  hotX = -1,
int  hotY = -1 
)
QCursor::QCursor ( const QPixmap pixmap,
int  hotX = -1,
int  hotY = -1 
)
QCursor::QCursor ( const QCursor )
QCursor::~QCursor ( )

Documentación de las funciones miembro

const QBitmap * QCursor::bitmap ( ) const

Returns the cursor bitmap, or 0 if it is one of the standard cursors.

const QBitmap* QCursor::bitmap ( ) const
void QCursor::cleanup ( ) [static]

Internal function that deinitializes the predefined cursors. This function is called from the QApplication destructor.

Ver también:
initialize()
static void QCursor::cleanup ( ) [static]
QPoint QCursor::hotSpot ( ) const
QPoint QCursor::hotSpot ( ) const

Returns the cursor hot spot, or (0,0) if it is one of the standard cursors.

Returns the cursor hot spot, or (0, 0) if it is one of the standard cursors.

static void QCursor::initialize ( ) [static]
void QCursor::initialize ( ) [static]

Internal function that initializes the predefined cursors. This function is called from the QApplication constructor.

Ver también:
cleanup()
const QBitmap* QCursor::mask ( ) const
const QBitmap * QCursor::mask ( ) const

Returns the cursor bitmap mask, or 0 if it is one of the standard cursors.

QCursor & QCursor::operator= ( const QCursor c)

Assigns c to this cursor and returns a reference to this cursor.

QCursor& QCursor::operator= ( const QCursor )
static QPoint QCursor::pos ( ) [static]
QPoint QCursor::pos ( ) [static]

Returns the position of the cursor (hot spot) in global screen coordinates.

You can call QWidget::mapFromGlobal() to translate it to widget coordinates.

Ver también:
setPos(), QWidget::mapFromGlobal(), QWidget::mapToGlobal()
static void QCursor::setPos ( int  x,
int  y 
) [static]
static void QCursor::setPos ( const QPoint ) [static]
void QCursor::setPos ( const QPoint p) [inline, static]

Esta es una función miembro sobrecargada que se suministra por conveniencia. Difiere de la anterior función solamente en los argumentos que acepta.

void QCursor::setPos ( int  x,
int  y 
) [static]

Moves the cursor (hot spot) to the global screen position x and y.

You can call QWidget::mapToGlobal() to translate widget coordinates to global screen coordinates.

Ver también:
pos(), QWidget::mapFromGlobal(), QWidget::mapToGlobal()

Moves the cursor (hot spot) to the global screen position (x, y).

You can call QWidget::mapToGlobal() to translate widget coordinates to global screen coordinates.

Ver también:
pos(), QWidget::mapFromGlobal(), QWidget::mapToGlobal()
void QCursor::setShape ( int  shape)

Sets the cursor to the shape identified by shape.

  • ArrowCursor - standard arrow cursor
  • UpArrowCursor - upwards arrow
  • CrossCursor - crosshair
  • WaitCursor - hourglass/watch
  • IbeamCursor - ibeam/text entry
  • SizeVerCursor - vertical resize
  • SizeHorCursor - horizontal resize
  • SizeBDiagCursor - diagonal resize (/)
  • SizeFDiagCursor - diagonal resize (\)
  • SizeAllCursor - all directions resize
  • BlankCursor - blank/invisible cursor
  • SplitVCursor - vertical splitting
  • SplitHCursor - horziontal splitting
  • PointingHandCursor - a pointing hand
  • ForbiddenCursor - a slashed circle
  • BitmapCursor - userdefined bitmap cursor

These correspond to the predefined global QCursor objects.

Ver también:
shape()

Sets the cursor to the shape identified by shape.

See CursorShape for the list of cursor shapes.

Ver también:
shape()
void QCursor::setShape ( int  )
int QCursor::shape ( ) const

Returns the cursor shape identifer. The return value is one of following values (cast to an int)

  • ArrowCursor - standard arrow cursor
  • UpArrowCursor - upwards arrow
  • CrossCursor - crosshair
  • WaitCursor - hourglass/watch
  • IbeamCursor - ibeam/text entry
  • SizeVerCursor - vertical resize
  • SizeHorCursor - horizontal resize
  • SizeBDiagCursor - diagonal resize (/)
  • SizeFDiagCursor - diagonal resize (\)
  • SizeAllCursor - all directions resize
  • BlankCursor - blank/invisible cursor
  • SplitVCursor - vertical splitting
  • SplitHCursor - horziontal splitting
  • PointingHandCursor - a pointing hand
  • ForbiddenCursor - a slashed circle
  • BitmapCursor - userdefined bitmap cursor

These correspond to the predefined global QCursor objects.

Ver también:
setShape()

Returns the cursor shape identifier. The return value is one of the CursorShape enum values (cast to an int).

Ver también:
setShape()
int QCursor::shape ( ) const

Documentación de las funciones relacionadas y clases amigas

QDataStream & operator<< ( QDataStream s,
const QCursor c 
) [related]

Writes the cursor c to the stream s.

Ver también:
Format of the QDataStream operators
QDataStream & operator>> ( QDataStream s,
QCursor c 
) [related]

Reads a cursor from the stream s and sets c to the read data.

Ver también:
Format of the QDataStream operators

La documentación para esta clase fue generada a partir de los siguientes ficheros:
 Todo Clases Namespaces Archivos Funciones Variables 'typedefs' Enumeraciones Valores de enumeraciones Propiedades Amigas 'defines'