java.lang.Object
- org.eclipse.swt.dnd.DND

```
public class DND
extends Object
```
Class DND contains all the constants used in defining a DragSource or a DropTarget.

See Also:

Sample code and further information

Field Summary

Fields
Modifier and Type	Field	Description
`static int`	`CLIPBOARD`	The transfer mechanism for data that is being cut and then pasted or copied and then pasted (value is 1).
`static String`	`DRAG_SOURCE_KEY`	DragSource Key: The string constant for looking up the drag source for a control using `getData(String)`.
`static int`	`DragEnd`	DragSource Event: the drop has successfully completed or has been terminated (such as hitting the ESC key); perform cleanup such as removing data on a move operation (value is 2000).
`static int`	`DragEnter`	DropTarget Event: the cursor has entered the drop target boundaries (value is 2002).
`static int`	`DragLeave`	DropTarget Event: the cursor has left the drop target boundaries OR the drop operation has been cancelled (such as by hitting ECS) OR the drop is about to happen (user has released the mouse button over this target) (value is 2003).
`static int`	`DragOperationChanged`	DropTarget Event: the operation being performed has changed usually due to the user changing the selected modifier keys while dragging (value is 2005).
`static int`	`DragOver`	DropTarget Event: the cursor is over the drop target (value is 2004).
`static int`	`DragSetData`	DragSource Event: the data to be dropped is required from the drag source (value is 2001).
`static int`	`DragStart`	DragSource Event: a drag is about to begin (value is 2008).
`static int`	`Drop`	DropTarget Event: the data has been dropped (value is 2006).
`static int`	`DROP_COPY`	Drag and Drop Operation: a copy of the data in the drag source is added to the drop target (value is 1 << 0).
`static int`	`DROP_DEFAULT`	Drag and Drop Operation: During a dragEnter event or a dragOperationChanged, if no modifier keys are pressed, the operation is set to DROP_DEFAULT.
`static int`	`DROP_LINK`	Drag and Drop Operation: the drop target makes a link to the data in the drag source (value is 1 << 2).
`static int`	`DROP_MOVE`	Drag and Drop Operation: a copy of the data is added to the drop target and the drag source removes the original data and any references to the data, and updates its display (value is 1 << 1).
`static int`	`DROP_NONE`	Drag and Drop Operation: no drag/drop operation performed (value is 0).
`static String`	`DROP_TARGET_KEY`	DropTarget Key: The string constant for looking up the drop target for a control using `getData(String)`.
`static int`	`DROP_TARGET_MOVE`	Drag and Drop Operation: the drop target moves the data and the drag source removes any references to the data and updates its display.
`static int`	`DropAccept`	DropTarget Event: the drop target is given a last chance to modify the drop (value is 2007).
`static int`	`ERROR_CANNOT_INIT_DRAG`	Error code: drag source can not be initialized (value is 2000).
`static int`	`ERROR_CANNOT_INIT_DROP`	Error code: drop target cannot be initialized (value is 2001).
`static int`	`ERROR_CANNOT_SET_CLIPBOARD`	Error code: Data can not be set on system clipboard (value is 2002).
`static int`	`ERROR_INVALID_DATA`	Error code: Data does not have correct format for type (value is 2003).
`static int`	`FEEDBACK_EXPAND`	DropTarget drag under effect: The item currently under the cursor is expanded to allow the user to select a drop target from a sub item; applies to trees (value is 16).
`static int`	`FEEDBACK_INSERT_AFTER`	DropTarget drag under effect: An insertion mark is shown after the item under the cursor; applies to tables and trees (value is 4).
`static int`	`FEEDBACK_INSERT_BEFORE`	DropTarget drag under effect: An insertion mark is shown before the item under the cursor; applies to tables and trees (value is 2).
`static int`	`FEEDBACK_NONE`	DropTarget drag under effect: No effect is shown (value is 0).
`static int`	`FEEDBACK_SCROLL`	DropTarget drag under effect: The widget is scrolled up or down to allow the user to drop on items that are not currently visible; applies to tables and trees (value is 8).
`static int`	`FEEDBACK_SELECT`	DropTarget drag under effect: The item under the cursor is selected; applies to tables and trees (value is 1).
`static int`	`SELECTION_CLIPBOARD`	The transfer mechanism for clients that use the selection mechanism (value is 2).

Constructor Summary

Constructors
Constructor Description

DND()

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static void`	`error(int code)`	Throws an appropriate exception based on the passed in error code.
`static void`	`error(int code, int hresult)`	Throws an appropriate exception based on the passed in error code.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - CLIPBOARD
```
public static final int CLIPBOARD
```
    The transfer mechanism for data that is being cut and then pasted or copied and then pasted (value is 1).
    
    Since:
    
    3.1
    
    See Also:
    
    Clipboard, Constant Field Values
  - SELECTION_CLIPBOARD
```
public static final int SELECTION_CLIPBOARD
```
    The transfer mechanism for clients that use the selection mechanism (value is 2).
    
    Since:
    
    3.1
    
    See Also:
    
    Clipboard, Constant Field Values
  - DROP_NONE
```
public static final int DROP_NONE
```
    Drag and Drop Operation: no drag/drop operation performed (value is 0).
    
    See Also:
    
    Constant Field Values
  - DROP_COPY
```
public static final int DROP_COPY
```
    Drag and Drop Operation: a copy of the data in the drag source is added to the drop target (value is 1 << 0).
    
    See Also:
    
    Constant Field Values
  - DROP_MOVE
```
public static final int DROP_MOVE
```
    Drag and Drop Operation: a copy of the data is added to the drop target and the drag source removes the original data and any references to the data, and updates its display (value is 1 << 1).
    Warning: Some applications (most notably Firefox, Thunderbird, and Safari) return DROP_MOVE even if they just open a dropped file and don't copy anything, see bug 30543.
    
    To avoid data loss, you may want to not remove the original data when you handle a DragEnd for a FileTransfer whose Event.detail is DROP_MOVE.
    
    See Also:
    
    Constant Field Values
  - DROP_LINK
```
public static final int DROP_LINK
```
    Drag and Drop Operation: the drop target makes a link to the data in the drag source (value is 1 << 2).
    
    See Also:
    
    Constant Field Values
  - DROP_TARGET_MOVE
```
public static final int DROP_TARGET_MOVE
```
    Drag and Drop Operation: the drop target moves the data and the drag source removes any references to the data and updates its display. This is not available on all platforms and is only used when a non-SWT application is the drop target. In this case, the SWT drag source is informed in the dragFinished event that the drop target has moved the data. (value is 1 << 3).
    
    See Also:
    
    DragSourceListener.dragFinished(org.eclipse.swt.dnd.DragSourceEvent), Constant Field Values
  - DROP_DEFAULT
```
public static final int DROP_DEFAULT
```
    Drag and Drop Operation: During a dragEnter event or a dragOperationChanged, if no modifier keys are pressed, the operation is set to DROP_DEFAULT. The application can choose what the default operation should be by setting a new value in the operation field. If no value is choosen, the default operation for the platform will be selected (value is 1 << 4).
    
    Since:
    
    2.0
    
    See Also:
    
    DropTargetListener.dragEnter(org.eclipse.swt.dnd.DropTargetEvent), DropTargetListener.dragOperationChanged(org.eclipse.swt.dnd.DropTargetEvent), Constant Field Values
  - DragEnd
```
public static final int DragEnd
```
    DragSource Event: the drop has successfully completed or has been terminated (such as hitting the ESC key); perform cleanup such as removing data on a move operation (value is 2000).
    
    See Also:
    
    Constant Field Values
  - DragSetData
```
public static final int DragSetData
```
    DragSource Event: the data to be dropped is required from the drag source (value is 2001).
    
    See Also:
    
    Constant Field Values
  - DragEnter
```
public static final int DragEnter
```
    DropTarget Event: the cursor has entered the drop target boundaries (value is 2002).
    
    See Also:
    
    Constant Field Values
  - DragLeave
```
public static final int DragLeave
```
    DropTarget Event: the cursor has left the drop target boundaries OR the drop operation has been cancelled (such as by hitting ECS) OR the drop is about to happen (user has released the mouse button over this target) (value is 2003).
    
    See Also:
    
    Constant Field Values
  - DragOver
```
public static final int DragOver
```
    DropTarget Event: the cursor is over the drop target (value is 2004).
    
    See Also:
    
    Constant Field Values
  - DragOperationChanged
```
public static final int DragOperationChanged
```
    DropTarget Event: the operation being performed has changed usually due to the user changing the selected modifier keys while dragging (value is 2005).
    
    See Also:
    
    Constant Field Values
  - Drop
```
public static final int Drop
```
    DropTarget Event: the data has been dropped (value is 2006).
    
    See Also:
    
    Constant Field Values
  - DropAccept
```
public static final int DropAccept
```
    DropTarget Event: the drop target is given a last chance to modify the drop (value is 2007).
    
    See Also:
    
    Constant Field Values
  - DragStart
```
public static final int DragStart
```
    DragSource Event: a drag is about to begin (value is 2008).
    
    See Also:
    
    Constant Field Values
  - FEEDBACK_NONE
```
public static final int FEEDBACK_NONE
```
    DropTarget drag under effect: No effect is shown (value is 0).
    
    See Also:
    
    Constant Field Values
  - FEEDBACK_SELECT
```
public static final int FEEDBACK_SELECT
```
    DropTarget drag under effect: The item under the cursor is selected; applies to tables and trees (value is 1).
    
    See Also:
    
    Constant Field Values
  - FEEDBACK_INSERT_BEFORE
```
public static final int FEEDBACK_INSERT_BEFORE
```
    DropTarget drag under effect: An insertion mark is shown before the item under the cursor; applies to tables and trees (value is 2).
    
    See Also:
    
    Constant Field Values
  - FEEDBACK_INSERT_AFTER
```
public static final int FEEDBACK_INSERT_AFTER
```
    DropTarget drag under effect: An insertion mark is shown after the item under the cursor; applies to tables and trees (value is 4).
    
    See Also:
    
    Constant Field Values
  - FEEDBACK_SCROLL
```
public static final int FEEDBACK_SCROLL
```
    DropTarget drag under effect: The widget is scrolled up or down to allow the user to drop on items that are not currently visible; applies to tables and trees (value is 8).
    
    See Also:
    
    Constant Field Values
  - FEEDBACK_EXPAND
```
public static final int FEEDBACK_EXPAND
```
    DropTarget drag under effect: The item currently under the cursor is expanded to allow the user to select a drop target from a sub item; applies to trees (value is 16).
    
    See Also:
    
    Constant Field Values
  - ERROR_CANNOT_INIT_DRAG
```
public static final int ERROR_CANNOT_INIT_DRAG
```
    Error code: drag source can not be initialized (value is 2000).
    
    See Also:
    
    Constant Field Values
  - ERROR_CANNOT_INIT_DROP
```
public static final int ERROR_CANNOT_INIT_DROP
```
    Error code: drop target cannot be initialized (value is 2001).
    
    See Also:
    
    Constant Field Values
  - ERROR_CANNOT_SET_CLIPBOARD
```
public static final int ERROR_CANNOT_SET_CLIPBOARD
```
    Error code: Data can not be set on system clipboard (value is 2002).
    
    See Also:
    
    Constant Field Values
  - ERROR_INVALID_DATA
```
public static final int ERROR_INVALID_DATA
```
    Error code: Data does not have correct format for type (value is 2003).
    
    Since:
    
    3.1
    
    See Also:
    
    Constant Field Values
  - DROP_TARGET_KEY
```
public static final String DROP_TARGET_KEY
```
    DropTarget Key: The string constant for looking up the drop target for a control using getData(String). When a drop target is created for a control, it is stored as a property in the control using setData(String, Object).
    
    Since:
    
    3.4
    
    See Also:
    
    Constant Field Values
  - DRAG_SOURCE_KEY
```
public static final String DRAG_SOURCE_KEY
```
    DragSource Key: The string constant for looking up the drag source for a control using getData(String). When a drag source is created for a control, it is stored as a property in the control using setData(String, Object).
    
    Since:
    
    3.4
    
    See Also:
    
    Constant Field Values
- Constructor Detail
  - DND
```
public DND()
```
- Method Detail
  - error
```
public static void error(int code)
```
    Throws an appropriate exception based on the passed in error code.
    
    Parameters:
    
    code - the DND error code
  - error
```
public static void error(int code,
                         int hresult)
```
    Throws an appropriate exception based on the passed in error code. The hresult argument should be either 0, or the platform specific error code.
    In DND, errors are reported by throwing one of three exceptions:
    
    java.lang.IllegalArgumentException
    
    thrown whenever one of the API methods is invoked with an illegal argument
    
    org.eclipse.swt.SWTException (extends java.lang.RuntimeException)
    
    thrown whenever a recoverable error happens internally in SWT
    
    org.eclipse.swt.SWTError (extends java.lang.Error)
    
    thrown whenever a non-recoverable error happens internally in SWT
    
    This method provides the logic which maps between error codes and one of the above exceptions.
    
    Parameters:
    
    code - the DND error code.
    
    hresult - the platform specific error code.
    
    See Also:
    
    SWTError, SWTException, IllegalArgumentException

Class DND

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

CLIPBOARD

SELECTION_CLIPBOARD

DROP_NONE

DROP_COPY

DROP_MOVE

DROP_LINK

DROP_TARGET_MOVE

DROP_DEFAULT

DragEnd

DragSetData

DragEnter

DragLeave

DragOver

DragOperationChanged

Drop

DropAccept

DragStart

FEEDBACK_NONE

FEEDBACK_SELECT

FEEDBACK_INSERT_BEFORE

FEEDBACK_INSERT_AFTER

FEEDBACK_SCROLL

FEEDBACK_EXPAND

ERROR_CANNOT_INIT_DRAG

ERROR_CANNOT_INIT_DROP

ERROR_CANNOT_SET_CLIPBOARD

ERROR_INVALID_DATA

DROP_TARGET_KEY

DRAG_SOURCE_KEY

Constructor Detail

DND

Method Detail

error

error