VBoxDnDDropTarget.cpp@ 103631

Last change on this file since 103631 was 98103, checked in by vboxsync, 23 months ago
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1	/* $Id: VBoxDnDDropTarget.cpp 98103 2023-01-17 14:15:46Z vboxsync $ */
2	/** @file
3	* VBoxDnDTarget.cpp - IDropTarget implementation.
4	*/
5
6	/*
7	* Copyright (C) 2014-2023 Oracle and/or its affiliates.
8	*
9	* This file is part of VirtualBox base platform packages, as
10	* available from https://www.virtualbox.org.
11	*
12	* This program is free software; you can redistribute it and/or
13	* modify it under the terms of the GNU General Public License
14	* as published by the Free Software Foundation, in version 3 of the
15	* License.
16	*
17	* This program is distributed in the hope that it will be useful, but
18	* WITHOUT ANY WARRANTY; without even the implied warranty of
19	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20	* General Public License for more details.
21	*
22	* You should have received a copy of the GNU General Public License
23	* along with this program; if not, see <https://www.gnu.org/licenses>.
24	*
25	* SPDX-License-Identifier: GPL-3.0-only
26	*/
27
28	#define LOG_GROUP LOG_GROUP_GUEST_DND
29	#include <VBox/log.h>
30
31	#include <iprt/win/windows.h>
32	#include <new> /* For bad_alloc. */
33	#include <iprt/win/shlobj.h> /* For DROPFILES and friends. */
34
35	#include "VBoxTray.h"
36	#include "VBoxHelpers.h"
37	#include "VBoxDnD.h"
38
39	#include "VBox/GuestHost/DragAndDrop.h"
40	#include "VBox/HostServices/DragAndDropSvc.h"
41
42	#include <iprt/path.h>
43	#include <iprt/utf16.h>
44	#include <iprt/uri.h>
45
46
47	VBoxDnDDropTarget::VBoxDnDDropTarget(VBoxDnDWnd *pParent)
48	: m_cRefs(1),
49	m_pWndParent(pParent),
50	m_dwCurEffect(0),
51	m_pvData(NULL),
52	m_cbData(0),
53	m_EvtDrop(NIL_RTSEMEVENT)
54	{
55	int rc = RTSemEventCreate(&m_EvtDrop);
56	LogFlowFunc(("rc=%Rrc\n", rc)); NOREF(rc);
57	}
58
59	VBoxDnDDropTarget::~VBoxDnDDropTarget(void)
60	{
61	reset();
62
63	int rc2 = RTSemEventDestroy(m_EvtDrop);
64	AssertRC(rc2);
65
66	LogFlowFunc(("rc=%Rrc, mRefCount=%RI32\n", rc2, m_cRefs));
67	}
68
69	/*
70	* IUnknown methods.
71	*/
72
73	STDMETHODIMP_(ULONG) VBoxDnDDropTarget::AddRef(void)
74	{
75	return InterlockedIncrement(&m_cRefs);
76	}
77
78	STDMETHODIMP_(ULONG) VBoxDnDDropTarget::Release(void)
79	{
80	LONG lCount = InterlockedDecrement(&m_cRefs);
81	if (lCount == 0)
82	{
83	delete this;
84	return 0;
85	}
86
87	return lCount;
88	}
89
90	STDMETHODIMP VBoxDnDDropTarget::QueryInterface(REFIID iid, void **ppvObject)
91	{
92	AssertPtrReturn(ppvObject, E_INVALIDARG);
93
94	if ( iid == IID_IDropSource
95	\|\| iid == IID_IUnknown)
96	{
97	AddRef();
98	*ppvObject = this;
99	return S_OK;
100	}
101
102	*ppvObject = 0;
103	return E_NOINTERFACE;
104	}
105
106	/**
107	* Static helper function to dump supported formats of a data object.
108	*
109	* @param pDataObject Pointer to data object to dump formats for.
110	*/
111	/* static */
112	void VBoxDnDDropTarget::DumpFormats(IDataObject *pDataObject)
113	{
114	AssertPtrReturnVoid(pDataObject);
115
116	/* Enumerate supported source formats. This shouldn't happen too often
117	* on day to day use, but still keep it in here. */
118	IEnumFORMATETC *pEnumFormats;
119	HRESULT hr2 = pDataObject->EnumFormatEtc(DATADIR_GET, &pEnumFormats);
120	if (SUCCEEDED(hr2))
121	{
122	LogRel(("DnD: The following formats were offered to us:\n"));
123
124	FORMATETC curFormatEtc;
125	while (pEnumFormats->Next(1, &curFormatEtc,
126	NULL /* pceltFetched */) == S_OK)
127	{
128	WCHAR wszCfName[128]; /* 128 chars should be enough, rest will be truncated. */
129	hr2 = GetClipboardFormatNameW(curFormatEtc.cfFormat, wszCfName,
130	sizeof(wszCfName) / sizeof(WCHAR));
131	LogRel(("\tcfFormat=%RI16 (%s), tyMed=%RI32, dwAspect=%RI32, strCustomName=%ls, hr=%Rhrc\n",
132	curFormatEtc.cfFormat,
133	VBoxDnDDataObject::ClipboardFormatToString(curFormatEtc.cfFormat),
134	curFormatEtc.tymed,
135	curFormatEtc.dwAspect,
136	wszCfName, hr2));
137	}
138
139	pEnumFormats->Release();
140	}
141	}
142
143	/*
144	* IDropTarget methods.
145	*/
146
147	STDMETHODIMP VBoxDnDDropTarget::DragEnter(IDataObject pDataObject, DWORD grfKeyState, POINTL pt, DWORD pdwEffect)
148	{
149	RT_NOREF(pt);
150	AssertPtrReturn(pDataObject, E_INVALIDARG);
151	AssertPtrReturn(pdwEffect, E_INVALIDARG);
152
153	LogFlowFunc(("pDataObject=0x%p, grfKeyState=0x%x, x=%ld, y=%ld, dwEffect=%RU32\n",
154	pDataObject, grfKeyState, pt.x, pt.y, *pdwEffect));
155
156	reset();
157
158	/** @todo At the moment we only support one DnD format at a time. */
159
160	#ifdef DEBUG
161	VBoxDnDDropTarget::DumpFormats(pDataObject);
162	#endif
163
164	/* Try different formats.
165	* CF_HDROP is the most common one, so start with this. */
166	FORMATETC fmtEtc = { CF_HDROP, 0, DVASPECT_CONTENT, -1, TYMED_HGLOBAL };
167	HRESULT hr = pDataObject->QueryGetData(&fmtEtc);
168	if (hr == S_OK)
169	{
170	m_strFormat = "text/uri-list";
171	}
172	else
173	{
174	LogFlowFunc(("CF_HDROP not wanted, hr=%Rhrc\n", hr));
175
176	/* So we couldn't retrieve the data in CF_HDROP format; try with
177	* CF_UNICODETEXT + CF_TEXT formats now. Rest stays the same. */
178	fmtEtc.cfFormat = CF_UNICODETEXT;
179	hr = pDataObject->QueryGetData(&fmtEtc);
180	if (hr == S_OK)
181	{
182	m_strFormat = "text/plain;charset=utf-8";
183	}
184	else
185	{
186	LogFlowFunc(("CF_UNICODETEXT not wanted, hr=%Rhrc\n", hr));
187
188	fmtEtc.cfFormat = CF_TEXT;
189	hr = pDataObject->QueryGetData(&fmtEtc);
190	if (hr == S_OK)
191	{
192	m_strFormat = "text/plain;charset=utf-8";
193	}
194	else
195	{
196	LogFlowFunc(("CF_TEXT not wanted, hr=%Rhrc\n", hr));
197	fmtEtc.cfFormat = 0; /* Set it to non-supported. */
198
199	/* Clean up. */
200	reset();
201	}
202	}
203	}
204
205	/* Did we find a format that we support? */
206	if (fmtEtc.cfFormat)
207	{
208	LogFlowFunc(("Found supported format %RI16 (%s)\n",
209	fmtEtc.cfFormat, VBoxDnDDataObject::ClipboardFormatToString(fmtEtc.cfFormat)));
210
211	/* Make a copy of the FORMATETC structure so that we later can
212	* use this for comparrison and stuff. */
213	/** @todo The DVTARGETDEVICE member only is a shallow copy for now! */
214	memcpy(&m_FormatEtc, &fmtEtc, sizeof(FORMATETC));
215
216	/* Which drop effect we're going to use? */
217	/* Note: pt is not used since we don't need to differentiate within our
218	* proxy window. */
219	pdwEffect = VBoxDnDDropTarget::GetDropEffect(grfKeyState, pdwEffect);
220	}
221	else
222	{
223	/* No or incompatible data -- so no drop effect required. */
224	*pdwEffect = DROPEFFECT_NONE;
225
226	switch (hr)
227	{
228	case ERROR_INVALID_FUNCTION:
229	{
230	LogRel(("DnD: Drag and drop format is not supported by VBoxTray\n"));
231	VBoxDnDDropTarget::DumpFormats(pDataObject);
232	break;
233	}
234
235	default:
236	break;
237	}
238	}
239
240	LogFlowFunc(("Returning mstrFormats=%s, cfFormat=%RI16, pdwEffect=%ld, hr=%Rhrc\n",
241	m_strFormat.c_str(), fmtEtc.cfFormat, *pdwEffect, hr));
242	return hr;
243	}
244
245	STDMETHODIMP VBoxDnDDropTarget::DragOver(DWORD grfKeyState, POINTL pt, DWORD *pdwEffect)
246	{
247	RT_NOREF(pt);
248	AssertPtrReturn(pdwEffect, E_INVALIDARG);
249
250	#ifdef DEBUG_andy
251	LogFlowFunc(("cfFormat=%RI16, grfKeyState=0x%x, x=%ld, y=%ld\n",
252	m_FormatEtc.cfFormat, grfKeyState, pt.x, pt.y));
253	#endif
254
255	if (m_FormatEtc.cfFormat)
256	{
257	/* Note: pt is not used since we don't need to differentiate within our
258	* proxy window. */
259	pdwEffect = VBoxDnDDropTarget::GetDropEffect(grfKeyState, pdwEffect);
260	}
261	else
262	{
263	*pdwEffect = DROPEFFECT_NONE;
264	}
265
266	#ifdef DEBUG_andy
267	LogFlowFunc(("Returning pdwEffect=%ld\n", pdwEffect));
268	#endif
269	return S_OK;
270	}
271
272	STDMETHODIMP VBoxDnDDropTarget::DragLeave(void)
273	{
274	#ifdef DEBUG_andy
275	LogFlowFunc(("cfFormat=%RI16\n", m_FormatEtc.cfFormat));
276	#endif
277
278	if (m_pWndParent)
279	m_pWndParent->Hide();
280
281	return S_OK;
282	}
283
284	STDMETHODIMP VBoxDnDDropTarget::Drop(IDataObject pDataObject, DWORD grfKeyState, POINTL pt, DWORD pdwEffect)
285	{
286	RT_NOREF(pt);
287	AssertPtrReturn(pDataObject, E_INVALIDARG);
288	AssertPtrReturn(pdwEffect, E_INVALIDARG);
289
290	LogFlowFunc(("mFormatEtc.cfFormat=%RI16 (%s), pDataObject=0x%p, grfKeyState=0x%x, x=%ld, y=%ld\n",
291	m_FormatEtc.cfFormat, VBoxDnDDataObject::ClipboardFormatToString(m_FormatEtc.cfFormat),
292	pDataObject, grfKeyState, pt.x, pt.y));
293
294	HRESULT hr = S_OK;
295
296	if (m_FormatEtc.cfFormat) /* Did we get a supported format yet? */
297	{
298	/* Make sure the data object's data format is still valid. */
299	hr = pDataObject->QueryGetData(&m_FormatEtc);
300	AssertMsg(SUCCEEDED(hr),
301	("Data format changed to invalid between DragEnter() and Drop(), cfFormat=%RI16 (%s), hr=%Rhrc\n",
302	m_FormatEtc.cfFormat, VBoxDnDDataObject::ClipboardFormatToString(m_FormatEtc.cfFormat), hr));
303	}
304
305	int rc = VINF_SUCCESS;
306
307	if (SUCCEEDED(hr))
308	{
309	STGMEDIUM stgMed;
310	hr = pDataObject->GetData(&m_FormatEtc, &stgMed);
311	if (SUCCEEDED(hr))
312	{
313	/*
314	* First stage: Prepare the access to the storage medium.
315	* For now we only support HGLOBAL stuff.
316	*/
317	PVOID pvData = NULL; /** @todo Put this in an own union? */
318
319	switch (m_FormatEtc.tymed)
320	{
321	case TYMED_HGLOBAL:
322	pvData = GlobalLock(stgMed.hGlobal);
323	if (!pvData)
324	{
325	LogFlowFunc(("Locking HGLOBAL storage failed with %Rrc\n",
326	RTErrConvertFromWin32(GetLastError())));
327	rc = VERR_INVALID_HANDLE;
328	hr = E_INVALIDARG; /* Set special hr for OLE. */
329	}
330	break;
331
332	default:
333	AssertMsgFailed(("Storage medium type %RI32 supported\n",
334	m_FormatEtc.tymed));
335	rc = VERR_NOT_SUPPORTED;
336	hr = DV_E_TYMED; /* Set special hr for OLE. */
337	break;
338	}
339
340	if (RT_SUCCESS(rc))
341	{
342	/*
343	* Second stage: Do the actual copying of the data object's data,
344	* based on the storage medium type.
345	*/
346	switch (m_FormatEtc.cfFormat)
347	{
348	case CF_TEXT:
349	RT_FALL_THROUGH();
350	case CF_UNICODETEXT:
351	{
352	AssertPtr(pvData);
353	size_t cbSize = GlobalSize(pvData);
354
355	LogRel(("DnD: Got %zu bytes of %s\n", cbSize,
356	m_FormatEtc.cfFormat == CF_TEXT
357	? "ANSI text" : "Unicode text"));
358	if (cbSize)
359	{
360	char *pszText = NULL;
361
362	rc = m_FormatEtc.cfFormat == CF_TEXT
363	/* ANSI codepage -> UTF-8 */
364	? RTStrCurrentCPToUtf8(&pszText, (char *)pvData)
365	/* Unicode -> UTF-8 */
366	: RTUtf16ToUtf8((PCRTUTF16)pvData, &pszText);
367
368	if (RT_SUCCESS(rc))
369	{
370	AssertPtr(pszText);
371
372	size_t cbText = strlen(pszText) + 1; /* Include termination. */
373
374	m_pvData = RTMemDup((void *)pszText, cbText);
375	m_cbData = cbText;
376
377	RTStrFree(pszText);
378	pszText = NULL;
379	}
380	}
381
382	break;
383	}
384
385	case CF_HDROP:
386	{
387	AssertPtr(pvData);
388
389	/* Convert to a string list, separated by \r\n. */
390	DROPFILES pDropFiles = (DROPFILES )pvData;
391	AssertPtr(pDropFiles);
392
393	/** @todo Replace / merge the following code with VBoxShClWinDropFilesToStringList(). */
394
395	/* Do we need to do Unicode stuff? */
396	const bool fUnicode = RT_BOOL(pDropFiles->fWide);
397
398	/* Get the offset of the file list. */
399	Assert(pDropFiles->pFiles >= sizeof(DROPFILES));
400
401	/* Note: This is not pDropFiles->pFiles! DragQueryFile only
402	* will work with the plain storage medium pointer! */
403	HDROP hDrop = (HDROP)(pvData);
404
405	/* First, get the file count. */
406	/** @todo Does this work on Windows 2000 / NT4? */
407	char *pszFiles = NULL;
408	size_t cchFiles = 0;
409	UINT cFiles = DragQueryFile(hDrop, UINT32_MAX /* iFile /, NULL / lpszFile /, 0 / cchFile */);
410
411	LogRel(("DnD: Got %RU16 file(s), fUnicode=%RTbool\n", cFiles, fUnicode));
412
413	for (UINT i = 0; i < cFiles; i++)
414	{
415	UINT cchFile = DragQueryFile(hDrop, i /* File index /, NULL / Query size first /, 0 / cchFile */);
416	Assert(cchFile);
417
418	if (RT_FAILURE(rc))
419	break;
420
421	char pszFileUtf8 = NULL; / UTF-8 version. */
422	UINT cchFileUtf8 = 0;
423	if (fUnicode)
424	{
425	/* Allocate enough space (including terminator). */
426	WCHAR pwszFile = (WCHAR )RTMemAlloc((cchFile + 1) * sizeof(WCHAR));
427	if (pwszFile)
428	{
429	const UINT cwcFileUtf16 = DragQueryFileW(hDrop, i /* File index */,
430	pwszFile, cchFile + 1 /* Include terminator */);
431
432	AssertMsg(cwcFileUtf16 == cchFile, ("cchFileUtf16 (%RU16) does not match cchFile (%RU16)\n",
433	cwcFileUtf16, cchFile));
434	RT_NOREF(cwcFileUtf16);
435
436	rc = RTUtf16ToUtf8(pwszFile, &pszFileUtf8);
437	if (RT_SUCCESS(rc))
438	{
439	cchFileUtf8 = (UINT)strlen(pszFileUtf8);
440	Assert(cchFileUtf8);
441	}
442
443	RTMemFree(pwszFile);
444	}
445	else
446	rc = VERR_NO_MEMORY;
447	}
448	else /* ANSI */
449	{
450	/* Allocate enough space (including terminator). */
451	pszFileUtf8 = (char )RTMemAlloc((cchFile + 1) sizeof(char));
452	if (pszFileUtf8)
453	{
454	cchFileUtf8 = DragQueryFileA(hDrop, i /* File index */,
455	pszFileUtf8, cchFile + 1 /* Include terminator */);
456
457	AssertMsg(cchFileUtf8 == cchFile, ("cchFileUtf8 (%RU16) does not match cchFile (%RU16)\n",
458	cchFileUtf8, cchFile));
459	}
460	else
461	rc = VERR_NO_MEMORY;
462	}
463
464	if (RT_SUCCESS(rc))
465	{
466	LogFlowFunc(("\tFile: %s (cchFile=%RU16)\n", pszFileUtf8, cchFileUtf8));
467
468	LogRel(("DnD: Adding guest file '%s'\n", pszFileUtf8));
469
470	if (RT_SUCCESS(rc))
471	{
472	char *pszFileURI = RTUriFileCreate(pszFileUtf8);
473	if (pszFileURI)
474	{
475	const size_t cchFileURI = RTStrNLen(pszFileURI, RTPATH_MAX);
476	rc = RTStrAAppendExN(&pszFiles, 1 /* cPairs */, pszFileURI, cchFileURI);
477	if (RT_SUCCESS(rc))
478	cchFiles += cchFileURI;
479
480	RTStrFree(pszFileURI);
481	}
482	else
483	rc = VERR_NO_MEMORY;
484	}
485	}
486
487	if (RT_FAILURE(rc))
488	LogRel(("DnD: Error handling file entry #%u, rc=%Rrc\n", i, rc));
489
490	RTStrFree(pszFileUtf8);
491
492	if (RT_SUCCESS(rc))
493	{
494	/* Add separation between filenames.
495	* Note: Also do this for the last element of the list. */
496	rc = RTStrAAppendExN(&pszFiles, 1 /* cPairs /, DND_PATH_SEPARATOR_STR, 2 / Bytes */);
497	if (RT_SUCCESS(rc))
498	cchFiles += 2; /* Include \r\n */
499	}
500	}
501
502	if (RT_SUCCESS(rc))
503	{
504	cchFiles += 1; /* Add string termination. */
505
506	const size_t cbFiles = cchFiles * sizeof(char);
507
508	LogFlowFunc(("cFiles=%u, cchFiles=%zu, cbFiles=%zu, pszFiles=0x%p\n",
509	cFiles, cchFiles, cbFiles, pszFiles));
510
511	m_pvData = pszFiles;
512	m_cbData = cbFiles;
513	}
514	else
515	{
516	RTStrFree(pszFiles);
517	pszFiles = NULL;
518	}
519
520	LogFlowFunc(("Building CF_HDROP list rc=%Rrc, cFiles=%RU16, cchFiles=%RU32\n",
521	rc, cFiles, cchFiles));
522	break;
523	}
524
525	default:
526	/* Note: Should not happen due to the checks done in DragEnter(). */
527	AssertMsgFailed(("Format of type %RI16 (%s) not supported\n",
528	m_FormatEtc.cfFormat, VBoxDnDDataObject::ClipboardFormatToString(m_FormatEtc.cfFormat)));
529	hr = DV_E_CLIPFORMAT; /* Set special hr for OLE. */
530	break;
531	}
532
533	/*
534	* Third stage: Unlock + release access to the storage medium again.
535	*/
536	switch (m_FormatEtc.tymed)
537	{
538	case TYMED_HGLOBAL:
539	GlobalUnlock(stgMed.hGlobal);
540	break;
541
542	default:
543	AssertMsgFailed(("Really should not happen -- see init stage!\n"));
544	break;
545	}
546	}
547
548	/* Release storage medium again. */
549	ReleaseStgMedium(&stgMed);
550
551	/* Signal waiters. */
552	m_rcDropped = rc;
553	RTSemEventSignal(m_EvtDrop);
554	}
555	}
556
557	if (RT_SUCCESS(rc))
558	{
559	/* Note: pt is not used since we don't need to differentiate within our
560	* proxy window. */
561	pdwEffect = VBoxDnDDropTarget::GetDropEffect(grfKeyState, pdwEffect);
562	}
563	else
564	*pdwEffect = DROPEFFECT_NONE;
565
566	if (m_pWndParent)
567	m_pWndParent->Hide();
568
569	LogFlowFunc(("Returning with hr=%Rhrc (%Rrc), mFormatEtc.cfFormat=%RI16 (%s), *pdwEffect=%RI32\n",
570	hr, rc, m_FormatEtc.cfFormat, VBoxDnDDataObject::ClipboardFormatToString(m_FormatEtc.cfFormat),
571	*pdwEffect));
572
573	return hr;
574	}
575
576	/**
577	* Static helper function to return a drop effect for a given key state and allowed effects.
578	*
579	* @returns Resolved drop effect.
580	* @param grfKeyState Key state to determine drop effect for.
581	* @param dwAllowedEffects Allowed drop effects to determine drop effect for.
582	*/
583	/* static */
584	DWORD VBoxDnDDropTarget::GetDropEffect(DWORD grfKeyState, DWORD dwAllowedEffects)
585	{
586	DWORD dwEffect = DROPEFFECT_NONE;
587
588	if(grfKeyState & MK_CONTROL)
589	dwEffect = dwAllowedEffects & DROPEFFECT_COPY;
590	else if(grfKeyState & MK_SHIFT)
591	dwEffect = dwAllowedEffects & DROPEFFECT_MOVE;
592
593	/* If there still was no drop effect assigned, check for the handed-in
594	* allowed effects and assign one of them.
595	*
596	* Note: A move action has precendence over a copy action! */
597	if (dwEffect == DROPEFFECT_NONE)
598	{
599	if (dwAllowedEffects & DROPEFFECT_COPY)
600	dwEffect = DROPEFFECT_COPY;
601	if (dwAllowedEffects & DROPEFFECT_MOVE)
602	dwEffect = DROPEFFECT_MOVE;
603	}
604
605	#ifdef DEBUG_andy
606	LogFlowFunc(("grfKeyState=0x%x, dwAllowedEffects=0x%x, dwEffect=0x%x\n",
607	grfKeyState, dwAllowedEffects, dwEffect));
608	#endif
609	return dwEffect;
610	}
611
612	/**
613	* Resets a drop target object.
614	*/
615	void VBoxDnDDropTarget::reset(void)
616	{
617	LogFlowFuncEnter();
618
619	if (m_pvData)
620	{
621	RTMemFree(m_pvData);
622	m_pvData = NULL;
623	}
624
625	m_cbData = 0;
626
627	RT_ZERO(m_FormatEtc);
628	m_strFormat = "";
629	}
630
631	/**
632	* Returns the currently supported formats of a drop target.
633	*
634	* @returns Supported formats.
635	*/
636	RTCString VBoxDnDDropTarget::Formats(void) const
637	{
638	return m_strFormat;
639	}
640
641	/**
642	* Waits for a drop event to happen.
643	*
644	* @returns VBox status code.
645	* @param msTimeout Timeout (in ms) to wait for drop event.
646	*/
647	int VBoxDnDDropTarget::WaitForDrop(RTMSINTERVAL msTimeout)
648	{
649	LogFlowFunc(("msTimeout=%RU32\n", msTimeout));
650
651	int rc = RTSemEventWait(m_EvtDrop, msTimeout);
652	if (RT_SUCCESS(rc))
653	rc = m_rcDropped;
654
655	LogFlowFuncLeaveRC(rc);
656	return rc;
657	}
658

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source: vbox/trunk/src/VBox/Additions/WINNT/VBoxTray/VBoxDnDDropTarget.cpp@ 103631

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