VDKDnD Class Reference

Provides dnd support. More...

#include <vdkdnd.h>

Inheritance diagram for VDKDnD:

List of all members.

Public Member Functions

• virtual ~VDKDnD ()
• void AddTarget (VDKObject *target)
• void AddSource (VDKObject *source)
• void RemoveTarget (VDKObject *target)
• void RemoveSource (VDKObject *source)
• void SetIcon (VDKObject *object, VDKRawPixmap *pixmap)
• VDKDnDTable * DnDSources ()
• VDKDnDTable * DnDTargets ()

Public Attributes

• VDKReadOnlyValueProp< VDKDnD,
  VDKObject * > DragSource
• VDKReadOnlyValueProp< VDKDnD,
  VDKPoint > DragPoint

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Detailed Description

Provides dnd support.

Description

This class provides support for gtk+ drag an drop VDKDnD can be viewed from two sides:

• Source side: the widget that is dragged. Source widget are normally non-containers widgets.
• Target side: the widget that accept (is the target) of a dragged widget. Target widgets are normally containers widget even if not compulsory

Widgets can be both sources and targets, so VDKDnD class supports m:n relationship between widgets interested in dnd. VDKDnD class provides support for both sides.

SIGNALS

Both signals for static and dynamic tables are provided.

• dnd_dropped_signal
• "dnd_dropped"

Received by target when a dragged widget is dropped into target

• dnd_get_data_signal
• "dnd_get_data"

Received when source data are transferred to dnd widget (not very useful for a normal user)

• dnd_drag_motion_signal
• "dnd_drag_motion"

Received by target when a dragged widget icon mouves over the target widget

• dnd_drag_leave_signal
• "dnd_drag_leave"

Received by target when a dragged widget icon leaves the target widget

TIP

Signals using dynamic tables are handled by vdk overriding gtk+, thus user must connect with dynamic tables setting <gtk> arg always false.

  SignalConnect(target,"dnd_dropped",&DndForm::OnDrop,false);

EXAMPLES

In ./testvdk/dnd.cc

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Constructor & Destructor Documentation

VDKDnD::~VDKDnD

(

)

[virtual]

Destructor

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Member Function Documentation

void VDKDnD::AddTarget

(

VDKObject *

target

)

Add a widget as dnd target.

void VDKDnD::AddSource

(

VDKObject *

source

)

Add a widget as dnd source.

void VDKDnD::RemoveTarget

(

VDKObject *

target

)

Remove a target from target list

void VDKDnD::RemoveSource

(

VDKObject *

source

)

Remove a target from source list

void VDKDnD::SetIcon	(	VDKObject *	object,
		VDKRawPixmap *	pixmap
	)

Sets widget dragging icon

VDKDnDTable* VDKDnD::DnDSources

(

)

[inline]

Return sources dnd tables.

Tip

VDKDnDTable class is a VDKList of VDKDnDEntry class objects. Each VDKDnDEntry object has a method Object() that returns source/target widget address. VDKDnDIterator class for accessing table is provided as well.

VDKDnDTable* VDKDnD::DnDTargets

(

)

[inline]

Return sources dnd target tables.

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Member Data Documentation

VDKReadOnlyValueProp<VDKDnD,VDKObject*> VDKDnD::DragSource

The widget that actually is being dragged

VDKReadOnlyValueProp<VDKDnD,VDKPoint> VDKDnD::DragPoint

Receiving a dnd_drag_motion signal, DragPoint contains mouse coordinates.

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The documentation for this class was generated from the following files:

• vdkdnd.h
• vdkdnd.cc

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