c7f4b627c4
Patch from Gaetano Mendola <mendola@gmail.com> Original review: http://codereview.chromium.org/4273 I added some additions on my part and two unit test fix due to the added DCHECK. Reduced atl header inclusion. Review URL: http://codereview.chromium.org/5009 git-svn-id: svn://svn.chromium.org/chrome/trunk/src@2730 0039d316-1c4b-4281-b951-d872f2087c98
47 lines
1.3 KiB
C++
47 lines
1.3 KiB
C++
// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style license that can be
|
|
// found in the LICENSE file.
|
|
|
|
#ifndef BASE_BASE_DRAG_SOURCE_H_
|
|
#define BASE_BASE_DRAG_SOURCE_H_
|
|
|
|
#include <objidl.h>
|
|
|
|
#include "base/basictypes.h"
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// BaseDragSource
|
|
//
|
|
// A base IDropSource implementation. Handles notifications sent by an active
|
|
// drag-drop operation as the user mouses over other drop targets on their
|
|
// system. This object tells Windows whether or not the drag should continue,
|
|
// and supplies the appropriate cursors.
|
|
//
|
|
class BaseDragSource : public IDropSource {
|
|
public:
|
|
BaseDragSource();
|
|
virtual ~BaseDragSource() { }
|
|
|
|
// IDropSource implementation:
|
|
HRESULT __stdcall QueryContinueDrag(BOOL escape_pressed, DWORD key_state);
|
|
HRESULT __stdcall GiveFeedback(DWORD effect);
|
|
|
|
// IUnknown implementation:
|
|
HRESULT __stdcall QueryInterface(const IID& iid, void** object);
|
|
ULONG __stdcall AddRef();
|
|
ULONG __stdcall Release();
|
|
|
|
protected:
|
|
virtual void OnDragSourceCancel() { }
|
|
virtual void OnDragSourceDrop() { }
|
|
virtual void OnDragSourceMove() { }
|
|
|
|
private:
|
|
LONG ref_count_;
|
|
|
|
DISALLOW_EVIL_CONSTRUCTORS(BaseDragSource);
|
|
};
|
|
|
|
#endif // #ifndef BASE_DRAG_SOURCE_H_
|