BscDNDCustomFlavorHelper Class Reference

Inheritance diagram for BscDNDCustomFlavorHelper:

Public Member Functions
	BscDNDCustomFlavorHelper (IPMUnknown *boss)
virtual	~BscDNDCustomFlavorHelper ()
virtual DragDrop::TargetResponse	CouldAcceptTypes (const IDragDropTarget *target, DataObjectIterator *dataIter, const IDragDropSource *fromSource, const IDragDropController *controller) const
virtual ErrorCode	ProcessDragDropCommand (IDragDropTarget *, IDragDropController *, DragDrop::eCommandType)
Public Member Functions inherited from CDragDropTargetFlavorHelper
	CDragDropTargetFlavorHelper (IPMUnknown *boss)
virtual DragDrop::eHelperType	GetHelperType () const
virtual bool16	HelperWillDoDragTracking () const
virtual void	PrepareHelperForDrag () const
bool16	CanHandleDragData () const
void	SetCanHandleDragData (bool16 can)
virtual bool16	DoDragEnter_PreflightDragData (IDragDropTarget *, IDragDropController *)
virtual void	DoDragEnter (IDragDropTarget *)
virtual void	DoDragWithin (IDragDropTarget *, const PMPoint &localPt)
virtual void	DoDragLeave (IDragDropTarget *)
DragDrop::TargetResponse	HandleCouldAcceptTypes (const IDragDropTarget *, DataObjectIterator *, const IDragDropSource *, const IDragDropController *) const
virtual PMRect	GetDragDataBounds () const

Additional Inherited Members
Public Types inherited from IDragDropTargetFlavorHelper
enum	{ kDefaultIID = IID_IDRAGDROPTARGETFLAVORHELPER }
Protected Member Functions inherited from CDragDropTargetFlavorHelper
DragDrop::TargetResponse	GetCachedResponse () const
Protected Attributes inherited from CDragDropTargetFlavorHelper
DragDrop::TargetResponse	fCachedResponse
bool16	fCanHandleDragData

Detailed Description

Extends the DND target capabilities of the layout widget to accept our custom flavor object.

Constructor & Destructor Documentation

BscDNDCustomFlavorHelper::BscDNDCustomFlavorHelper

(

IPMUnknown *

boss

)

Constructor.

Parameters

boss	IN the boss class the interface is aggregated onto.

BscDNDCustomFlavorHelper::~BscDNDCustomFlavorHelper ( )

virtual

Destructor.

Member Function Documentation

DragDrop::TargetResponse BscDNDCustomFlavorHelper::CouldAcceptTypes ( const IDragDropTarget *  target, DataObjectIterator *  dataIter, const IDragDropSource *  fromSource, const IDragDropController *  controller  ) const

virtual

Determines whether we can handle the flavors in the drag.

Parameters

target	IN the target the mouse is currently over.
dataIter	IN iterator providing access to the data objects within the drag.
fromSource	IN the source of the drag.
controller	IN the drag drop controller mediating the drag.

Returns

a target response (either won't accept or drop will copy).

See Also

DragDrop::TargetResponse

Implements CDragDropTargetFlavorHelper.

ErrorCode BscDNDCustomFlavorHelper::ProcessDragDropCommand ( IDragDropTarget *  target, IDragDropController *  controller, DragDrop::eCommandType  action  )

virtual

performs the actual drag. Because we know that our custom flavor is masquerading and is really a page item we must take a copy of the page item, then move this copy to the drop zone. We know we have been dropped on a widget (because we are called as part of that widget responding to a drop of the custom flavor).

Parameters

target	IN the target for this drop.
controller	IN the drag drop controller that is mediating the drag.
action	IN what the drop means (i.e. copy, move etc)

Returns

kSuccess if the drop is executed without error, kFailure, otherwise.

Implements CDragDropTargetFlavorHelper.