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QImageDrag Class Reference

The QImageDrag class provides a drag-and-drop object for transferring images. More...

#include <qdragobject.h>

Inherits QDragObject.

List of all member functions.

Public Members

• QImageDrag ( QImage image, QWidget * dragSource = 0, const char * name = 0 ) 
• QImageDrag ( QWidget * dragSource = 0, const char * name = 0 ) 
• ~QImageDrag () 
• virtual void setImage ( QImage image ) 

Static Public Members

• bool canDecode ( const QMimeSource * e ) 
• bool decode ( const QMimeSource * e, QImage & i ) 
• bool decode ( const QMimeSource * e, QPixmap & i ) 

Detailed Description

Images are offered to the receiving application in multiple formats, determined by the output formats in Qt.

For detailed information about drag-and-drop, see the QDragObject class.

Member Function Documentation

QImageDrag::QImageDrag ( QImage image, QWidget * dragSource = 0, const char * name = 0 )

Constructs an image drag object and sets it to image. dragSource must be the drag source, name is the object name.

QImageDrag::QImageDrag ( QWidget * dragSource = 0, const char * name = 0 )

Constructs a default text drag object. dragSource must be the drag source, name is the object name.

QImageDrag::~QImageDrag ()

Destructs the image drag object and frees up all allocated resources.

bool QImageDrag::canDecode ( const QMimeSource * e ) [static]

Returns TRUE if the information in e can be decoded into an image.

See also decode().

Examples: desktop/desktop.cpp

bool QImageDrag::decode ( const QMimeSource * e, QImage & img ) [static]

Attempts to decode the dropped information in e into img, returning TRUE if successful.

See also canDecode().

bool QImageDrag::decode ( const QMimeSource * e, QPixmap & pm ) [static]

Attempts to decode the dropped information in e into pm, returning TRUE if successful.

This is a convenience function that converts to pm via a QImage.

See also canDecode().

Examples: desktop/desktop.cpp

QByteArray QImageDrag::encodedData ( const char * fmt ) const [virtual]

Reimplemented for internal reasons; the API is not affected.

const char * QImageDrag::format ( int i ) const [virtual]

Reimplemented for internal reasons; the API is not affected.

Reimplemented from QMimeSource.

void QImageDrag::setImage ( QImage image ) [virtual]

Sets the image to be dragged. You will need to call this if you did not pass the image during construction.

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