From bd0f3345a938b35ce6a12f6150373b0955b8dd12 Mon Sep 17 00:00:00 2001 From: Timothy Pearson Date: Sun, 10 Jul 2011 15:24:15 -0500 Subject: Add Qt3 development HEAD version --- doc/html/qicondrag.html | 124 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 124 insertions(+) create mode 100644 doc/html/qicondrag.html (limited to 'doc/html/qicondrag.html') diff --git a/doc/html/qicondrag.html b/doc/html/qicondrag.html new file mode 100644 index 0000000..9e1f988 --- /dev/null +++ b/doc/html/qicondrag.html @@ -0,0 +1,124 @@ + + + + + +QIconDrag Class + + + + + + + +

QIconDrag Class Reference
[iconview module]

+ +

The QIconDrag class supports drag and drop operations +within a QIconView. +More... +

#include <qiconview.h> +

Inherits QDragObject. +

List of all member functions. +

Public Members

QIconDrag ( QWidget * dragSource, const char * name = 0 )
virtual ~QIconDrag ()
void append ( const QIconDragItem & i, const QRect & pr, const QRect & tr )
virtual QByteArray encodedData ( const char * mime ) const

Static Public Members

bool canDecode ( QMimeSource * e )

Detailed Description

+ + +

The QIconDrag class supports drag and drop operations +within a QIconView. +

+ +

A QIconDrag object is used to maintain information about the +positions of dragged items and the data associated with the +dragged items. QIconViews are able to use this information to +paint the dragged items in the correct positions. Internally +QIconDrag stores the data associated with drag items in +QIconDragItem objects. +

If you want to use the extended drag-and-drop functionality of +QIconView, create a QIconDrag object in a reimplementation of +QIconView::dragObject(). Then create a QIconDragItem for each item +which should be dragged, set the data it represents with +QIconDragItem::setData(), and add each QIconDragItem to the drag +object using append(). +

The data in QIconDragItems is stored in a QByteArray and is +mime-typed (see QMimeSource and the +Drag and Drop +overview). If you want to use your own mime-types derive a class +from QIconDrag and reimplement format(), encodedData() and +canDecode(). +

The fileiconview example program demonstrates the use of the +QIconDrag class including subclassing and reimplementing +dragObject(), format(), encodedData() and canDecode(). See the files +qt/examples/fileiconview/qfileiconview.h and +qt/examples/fileiconview/qfileiconview.cpp. +

See also QMimeSource::format() and Drag And Drop Classes. + +

Member Function Documentation

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

+Constructs a drag object called name, which is a child of dragSource. +

Note that the drag object will be deleted when dragSource is deleted. + +

QIconDrag::~QIconDrag () `[virtual]` +

+Destructor. + +

void QIconDrag::append ( const QIconDragItem & i, const QRect & pr, const QRect & tr ) +

+Append the QIconDragItem, i, to the QIconDrag object's list of +items. You must also supply the geometry of the pixmap, pr, and +the textual caption, tr. +

bool QIconDrag::canDecode ( QMimeSource * e ) `[static]` +

+Returns TRUE if e can be decoded by the QIconDrag, otherwise +return FALSE. + +

Example: fileiconview/qfileiconview.cpp. +

QByteArray QIconDrag::encodedData ( const char * mime ) const `[virtual]` +

+Returns the encoded data of the drag object if mime is +application/x-qiconlist. + +

Example: fileiconview/qfileiconview.cpp. +

Reimplemented from QMimeSource. + +

+ +

Trademarks +

Qt 3.3.8

+ -- cgit v1.2.1

QIconDrag Class Reference[iconview module]