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KMultipleDrag Class Reference

This class makes it easy for applications to provide a drag object (for drag-n-drop or for clipboard) that has several representations of the same data, under different formats. More...

#include <tdemultipledrag.h>

Inheritance diagram for KMultipleDrag:
TQDragObject

List of all members.

Public Member Functions

 KMultipleDrag (TQWidget *dragSource=0, const char *name=0)
void addDragObject (TQDragObject *dragObject)
virtual TQByteArray encodedData (const char *mime) const
virtual const char * format (int i) const

Protected Member Functions

virtual void virtual_hook (int id, void *data)

Protected Attributes

TQPtrList< TQDragObject > m_dragObjects
TQValueList< int > m_numberFormats

Detailed Description

This class makes it easy for applications to provide a drag object (for drag-n-drop or for clipboard) that has several representations of the same data, under different formats.

Instead of creating a specific class for each case (as would otherwise be necessary), you can simply create independent drag objects (e.g. a TQImageDrag object and a KURLDrag object), and bundle them together using KMultipleDrag.

Sample code for this:

 KMultipleDrag *drag = new KMultipleDrag( parentWidget );
 drag->addDragObject( new TQImageDrag( someQImage, 0 ) );
 drag->addDragObject( new KURLDrag( someKURL, 0 ) );
 drag->drag();

Note that the drag objects added to the multiple drag become owned by it. For that reason their parent should be 0.

Author:
David Faure <faure@kde.org>

Definition at line 54 of file tdemultipledrag.h.


Constructor & Destructor Documentation

KMultipleDrag::KMultipleDrag ( TQWidget *  dragSource = 0,
const char *  name = 0 
)

Create a new KMultipleDrag object.

Parameters:
dragSource the parent object which is the source of the data, 0 for a parent-less object
name the name of the object, can be 0

Definition at line 25 of file tdemultipledrag.cpp.


Member Function Documentation

void KMultipleDrag::addDragObject ( TQDragObject *  dragObject  ) 

Call this to add each underlying drag object to the multiple drag object.

The drag object should not have a parent because the multiple drag object will own it.

Parameters:
dragObject the drag object to add. Should have no parent object.

Definition at line 31 of file tdemultipledrag.cpp.

TQByteArray KMultipleDrag::encodedData ( const char *  mime  )  const [virtual]

Returns the data of a drag object with that supports the given mime type.

Parameters:
mime the mime type to search
Returns:
the data, or a null byte array if not found
Reimplemented from superclass.

Definition at line 42 of file tdemultipledrag.cpp.

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

Returns the i'th supported format, or 0.

Parameters:
i the number of the format to check
Returns:
the format with the number i, or 0 otherwise
Reimplemented from superclass.

Definition at line 58 of file tdemultipledrag.cpp.


The documentation for this class was generated from the following files:
  • tdemultipledrag.h
  • tdemultipledrag.cpp

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