This is drag.h in view mode; [Download] [Up]
/*
drag.h
Application Kit, Release 3.0
Copyright (c) 1991, NeXT, Inc. All rights reserved.
*/
#ifndef DRAG_H
#define DRAG_H
#import "NXImage.h"
#import "Pasteboard.h"
typedef enum _NXDragOperation {
NX_DragOperationNone = 0, /* no operation == rejection */
NX_DragOperationCopy = 1,
NX_DragOperationLink = 2,
NX_DragOperationGeneric = 4,
NX_DragOperationPrivate = 8, /* system leaves the cursor alone until exit */
NX_DragOperationAll = 15
} NXDragOperation;
/* protocol for the sender of messages to a drag destination. The view or
window that registered dragging types sends these messages as dragging is
happening to find out details about that session of dragging.
*/
@protocol NXDraggingInfo
- draggingDestinationWindow;
- (NXDragOperation)draggingSourceOperationMask;
- (NXPoint)draggingLocation;
- (NXPoint)draggedImageLocation;
- (NXImage *)draggedImage;
- (NXImage *)draggedImageCopy;
- (Pasteboard *)draggingPasteboard;
- (BOOL)isDraggingSourceLocal;
- draggingSource;
- (int)draggingSequenceNumber;
- slideDraggedImageTo:(NXPoint *)screenPoint;
@end
/* Methods implemented by an object that receives dragged images. The
destination view or window is sent these messages during dragging if it
responds to them.
*/
@interface Object(NXDraggingDestination)
- (NXDragOperation)draggingEntered:(id <NXDraggingInfo>)sender;
- (NXDragOperation)draggingUpdated:(id <NXDraggingInfo>)sender;
- draggingExited:(id <NXDraggingInfo>)sender;
- (BOOL)prepareForDragOperation:(id <NXDraggingInfo>)sender;
- (BOOL)performDragOperation:(id <NXDraggingInfo>)sender;
- concludeDragOperation:(id <NXDraggingInfo>)sender;
@end
/* Methods implemented by an object that initiates a drag session. The
source app is sent these messages during dragging. The first must be
implemented, the others are sent if the source responds to them.
*/
@interface Object(NXDraggingSource)
- (NXDragOperation)draggingSourceOperationMaskForLocal:(BOOL)flag;
- draggedImage:(NXImage *)image beganAt:(NXPoint *)screenPoint;
- draggedImage:(NXImage *)image endedAt:(NXPoint *)screenPoint deposited:(BOOL)flag;
- (BOOL)ignoreModifierKeysWhileDragging;
@end
#endif
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.