Q3ImageDrag Class Reference
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.
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 ) |
Reimplemented Public Functions
| virtual QByteArray | encodedData ( const char * fmt ) const |
| virtual const char * | format ( int i ) const |
- 9 public functions inherited from Q3DragObject
- 29 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
- 7 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
- 8 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 function.
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().
QByteArray Q3ImageDrag::encodedData ( const char * fmt ) const [virtual]
Reimplemented from QMimeSource::encodedData().
const char * Q3ImageDrag::format ( int i ) const [virtual]
Reimplemented from QMimeSource::format().
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.
No notes