1QIconDrag(3qt)                                                  QIconDrag(3qt)
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3
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NAME

6       QIconDrag - Supports drag and drop operations within a QIconView
7

SYNOPSIS

9       #include <qiconview.h>
10
11       Inherits QDragObject.
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13   Public Members
14       QIconDrag ( QWidget * dragSource, const char * name = 0 )
15       virtual ~QIconDrag ()
16       void append ( const QIconDragItem & i, const QRect & pr, const QRect &
17           tr )
18       virtual QByteArray encodedData ( const char * mime ) const
19
20   Static Public Members
21       bool canDecode ( QMimeSource * e )
22

DESCRIPTION

24       The QIconDrag class supports drag and drop operations within a
25       QIconView.
26
27       A QIconDrag object is used to maintain information about the positions
28       of dragged items and the data associated with the dragged items.
29       QIconViews are able to use this information to paint the dragged items
30       in the correct positions. Internally QIconDrag stores the data
31       associated with drag items in QIconDragItem objects.
32
33       If you want to use the extended drag-and-drop functionality of
34       QIconView, create a QIconDrag object in a reimplementation of
35       QIconView::dragObject(). Then create a QIconDragItem for each item
36       which should be dragged, set the data it represents with
37       QIconDragItem::setData(), and add each QIconDragItem to the drag object
38       using append().
39
40       The data in QIconDragItems is stored in a QByteArray and is mime-typed
41       (see QMimeSource and the Drag and Drop overview). If you want to use
42       your own mime-types derive a class from QIconDrag and reimplement
43       format(), encodedData() and canDecode().
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45       The fileiconview example program demonstrates the use of the QIconDrag
46       class including subclassing and reimplementing dragObject(), format(),
47       encodedData() and canDecode(). See the files
48       qt/examples/fileiconview/qfileiconview.h and
49       qt/examples/fileiconview/qfileiconview.cpp.
50
51       See also QMimeSource::format() and Drag And Drop Classes.
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MEMBER FUNCTION DOCUMENTATION

QIconDrag::QIconDrag ( QWidget * dragSource, const char * name = 0 )
55       Constructs a drag object called name, which is a child of dragSource.
56
57       Note that the drag object will be deleted when dragSource is deleted.
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QIconDrag::~QIconDrag () [virtual]
60       Destructor.
61

void QIconDrag::append ( const QIconDragItem & i, const QRect & pr, const
63       QRect & tr )
64       Append the QIconDragItem, i, to the QIconDrag object's list of items.
65       You must also supply the geometry of the pixmap, pr, and the textual
66       caption, tr.
67
68       See also QIconDragItem.
69
70       Example: fileiconview/qfileiconview.cpp.
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bool QIconDrag::canDecode ( QMimeSource * e ) [static]
73       Returns TRUE if e can be decoded by the QIconDrag, otherwise return
74       FALSE.
75
76       Example: fileiconview/qfileiconview.cpp.
77

QByteArray QIconDrag::encodedData ( const char * mime ) const [virtual]
79       Returns the encoded data of the drag object if mime is application/x-
80       qiconlist.
81
82       Example: fileiconview/qfileiconview.cpp.
83
84       Reimplemented from QMimeSource.
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86

SEE ALSO
88       http://doc.trolltech.com/qicondrag.html
89       http://www.trolltech.com/faq/tech.html
90

92       Copyright 1992-2007 Trolltech ASA, http://www.trolltech.com.  See the
93       license file included in the distribution for a complete license
94       statement.
95

AUTHOR
97       Generated automatically from the source code.
98

BUGS
100       If you find a bug in Qt, please report it as described in
101       http://doc.trolltech.com/bughowto.html.  Good bug reports help us to
102       help you. Thank you.
103
104       The definitive Qt documentation is provided in HTML format; it is
105       located at $QTDIR/doc/html and can be read using Qt Assistant or with a
106       web browser. This man page is provided as a convenience for those users
107       who prefer man pages, although this format is not officially supported
108       by Trolltech.
109
110       If you find errors in this manual page, please report them to qt-
111       bugs@trolltech.com.  Please include the name of the manual page
112       (qicondrag.3qt) and the Qt version (3.3.8).
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115
116Trolltech AS                    2 February 2007                 QIconDrag(3qt)



        

    


            
        

        

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