QPlatformDrag Class Reference

The QPlatformDrag class provides an abstraction for drag. More...

#include <qplatformdrag.h>

Inheritance diagram for QPlatformDrag:

Collaboration diagram for QPlatformDrag:

Public Member Functions
	QPlatformDrag ()
virtual	~QPlatformDrag ()
QDrag *	currentDrag () const
virtual Qt::DropAction	drag (QDrag *m_drag)=0
virtual void	cancelDrag ()
	Cancels the currently active drag (only for drags of the current application initiated by QPlatformDrag::drag()).
void	updateAction (Qt::DropAction action)
	Called to notify QDrag about changes of the current action.
virtual Qt::DropAction	defaultAction (Qt::DropActions possibleActions, Qt::KeyboardModifiers modifiers) const
virtual bool	ownsDragObject () const
	Returns bool indicating whether QPlatformDrag takes ownership and therefore responsibility of deleting the QDrag object passed in from QPlatformDrag::drag. This can be useful on platforms where QDrag object has to be kept around.

Static Public Member Functions
static QPixmap	defaultPixmap ()

Detailed Description

The QPlatformDrag class provides an abstraction for drag.

Since

5.0

\preliminary

Definition at line 54 of file qplatformdrag.h.

Constructor & Destructor Documentation

QPlatformDrag()

QPlatformDrag::QPlatformDrag

(

)

Definition at line 60 of file qplatformdrag.cpp.

~QPlatformDrag()

QPlatformDrag::~QPlatformDrag ( )

virtual

Definition at line 64 of file qplatformdrag.cpp.

Member Function Documentation

cancelDrag()

void QPlatformDrag::cancelDrag ( )

virtual

Cancels the currently active drag (only for drags of the current application initiated by QPlatformDrag::drag()).

The default implementation does nothing.

Since

5.7

Reimplemented in QBasicDrag, and QWindowsDrag.

Definition at line 135 of file qplatformdrag.cpp.

References Q_UNIMPLEMENTED.

currentDrag()

QDrag * QPlatformDrag::currentDrag

(

)

const

Definition at line 69 of file qplatformdrag.cpp.

References QDragManager::self().

Referenced by QXcbDrag::cancel(), QWindowsOleDropSource::createCursors(), defaultAction(), QCocoaDrag::defaultAction(), QXcbDrag::defaultAction(), QXcbDrag::drop(), QWindowsDrag::dropData(), QWindowsOleDropSource::GiveFeedback(), QXcbDrag::handleDrop(), QXcbDrag::handleSelectionRequest(), QXcbDrag::move(), updateAction(), and QXcbDropData::xdndObtainData().

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defaultAction()

Qt::DropAction QPlatformDrag::defaultAction ( Qt::DropActions possibleActions, Qt::KeyboardModifiers modifiers ) const

virtual

Reimplemented in QCocoaDrag, and QXcbDrag.

Definition at line 74 of file qplatformdrag.cpp.

References Qt::AltModifier, Qt::ControlModifier, Qt::CopyAction, currentDrag(), QDrag::defaultAction(), Qt::IgnoreAction, Qt::LinkAction, Qt::MoveAction, qDebug, and Qt::ShiftModifier.

Referenced by QXcbDrag::defaultAction().

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defaultPixmap()

QPixmap QPlatformDrag::defaultPixmap ( )

static

Definition at line 171 of file qplatformdrag.cpp.

drag()

virtual Qt::DropAction QPlatformDrag::drag ( QDrag * m_drag )

pure virtual

Implemented in QWasmDrag, QBasicDrag, QWindowsDrag, and QCocoaDrag.

Referenced by QDragManager::drag().

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ownsDragObject()

bool QPlatformDrag::ownsDragObject ( ) const

virtual

Returns bool indicating whether QPlatformDrag takes ownership and therefore responsibility of deleting the QDrag object passed in from QPlatformDrag::drag. This can be useful on platforms where QDrag object has to be kept around.

Since

5.4

Reimplemented in QXcbDrag.

Definition at line 183 of file qplatformdrag.cpp.

Referenced by QDragManager::drag().

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updateAction()

void QPlatformDrag::updateAction

(

Qt::DropAction

action

)

Called to notify QDrag about changes of the current action.

Definition at line 144 of file qplatformdrag.cpp.

References QDrag::actionChanged(), currentDrag(), d, and emit.

Referenced by QWindowsOleDropSource::GiveFeedback(), and QBasicDrag::updateCursor().

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The documentation for this class was generated from the following files:

• qtbase/src/gui/kernel/qplatformdrag.h (05fc3aef53348fb58be6308076e000825b704e58)
• qtbase/src/gui/kernel/qplatformdrag.cpp (05fc3aef53348fb58be6308076e000825b704e58)