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Q3ImageDrag Class Reference
^{[Qt3Support module]}

The Q3ImageDrag class provides a drag and drop object for transferring images. More...

#include <Q3ImageDrag>

This class is part of the Qt 3 support library. It is provided to keep old source code working. We strongly advise against using it in new code. See Porting to Qt 4 for more information.

Inherits Q3DragObject.

• List of all members, including inherited members

Public Functions

• Q3ImageDrag ( QImage image, QWidget * dragSource = 0, const char * name = 0 )
• Q3ImageDrag ( QWidget * dragSource = 0, const char * name = 0 )
• ~Q3ImageDrag ()
• virtual void setImage ( QImage image )

• 9 public functions inherited from Q3DragObject
• 28 public functions inherited from QObject
• 3 public functions inherited from QMimeSource

Static Public Members

• bool canDecode ( const QMimeSource * source )
• bool decode ( const QMimeSource * source, QImage & image )
• bool decode ( const QMimeSource * source, QPixmap & pixmap )

• 1 static public member inherited from Q3DragObject
• 4 static public members inherited from QObject

Additional Inherited Members

• 1 property inherited from QObject
• 1 public slot inherited from QObject
• 1 signal inherited from QObject
• 1 protected function inherited from Q3DragObject
• 7 protected functions inherited from QObject

Detailed Description

The Q3ImageDrag class provides a drag and drop object for transferring images.

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

Member Function Documentation

Q3ImageDrag::Q3ImageDrag ( QImage image, QWidget * dragSource = 0, const char * name = 0 )

Constructs an image drag object with the given name, and sets its data to image. The dragSource is the widget that the drag operation started from.

Q3ImageDrag::Q3ImageDrag ( QWidget * dragSource = 0, const char * name = 0 )

Constructs a default image drag object with the given name. The dragSource is the widget that the drag operation started from.

Q3ImageDrag::~Q3ImageDrag ()

Destroys the image drag object.

bool Q3ImageDrag::canDecode ( const QMimeSource * source )   [static]

Returns true if the information in the MIME source can be decoded into an image; otherwise returns false.

See also decode().

bool Q3ImageDrag::decode ( const QMimeSource * source, QImage & image )   [static]

Decode the dropped information in the MIME source into the image. Returns true if successful; otherwise returns false.

See also canDecode().

bool Q3ImageDrag::decode ( const QMimeSource * source, QPixmap & pixmap )   [static]

This is an overloaded member function, provided for convenience.

Decodes the dropped information in the MIME source into the pixmap. Returns true if successful; otherwise returns false.

This is a convenience function that converts the information to a QPixmap via a QImage.

See also canDecode().

void Q3ImageDrag::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.