VBoxDnDDataObject.cpp@ 62556

Last change on this file since 62556 was 62522, checked in by vboxsync, 8 years ago
(C) 2016
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1	/* $Id: VBoxDnDDataObject.cpp 62522 2016-07-22 19:17:25Z vboxsync $ */
2	/** @file
3	* VBoxDnDDataObject.cpp - IDataObject implementation.
4	*/
5
6	/*
7	* Copyright (C) 2013-2016 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*/
17	#include <windows.h>
18	#include <new> /* For bad_alloc. */
19	#include <shlobj.h>
20
21	#include <iprt/path.h>
22	#include <iprt/semaphore.h>
23	#include <iprt/uri.h>
24
25	#ifdef LOG_GROUP
26	# undef LOG_GROUP
27	#endif
28	#define LOG_GROUP LOG_GROUP_GUEST_DND
29	#include <VBox/log.h>
30
31	#include "VBoxTray.h"
32	#include "VBoxHelpers.h"
33	#include "VBoxDnD.h"
34
35	#ifdef DEBUG
36	/* Enable the following line to get much more debug output about
37	* (un)known clipboard formats. */
38	//# define VBOX_DND_DEBUG_FORMATS
39	#endif
40
41	/** @todo Implement IDataObjectAsyncCapability interface? */
42
43	VBoxDnDDataObject::VBoxDnDDataObject(LPFORMATETC pFormatEtc, LPSTGMEDIUM pStgMed, ULONG cFormats)
44	: mStatus(Uninitialized),
45	mRefCount(1),
46	mcFormats(0),
47	mpvData(NULL),
48	mcbData(0)
49	{
50	HRESULT hr;
51
52	ULONG cFixedFormats = 1;
53	ULONG cAllFormats = cFormats + cFixedFormats;
54
55	try
56	{
57	mpFormatEtc = new FORMATETC[cAllFormats];
58	RT_BZERO(mpFormatEtc, sizeof(FORMATETC) * cAllFormats);
59	mpStgMedium = new STGMEDIUM[cAllFormats];
60	RT_BZERO(mpStgMedium, sizeof(STGMEDIUM) * cAllFormats);
61
62	/*
63	* Registration of dynamic formats needed?
64	*/
65	LogFlowFunc(("%RU32 dynamic formats\n", cFormats));
66	if (cFormats)
67	{
68	AssertPtr(pFormatEtc);
69	AssertPtr(pStgMed);
70
71	for (ULONG i = 0; i < cFormats; i++)
72	{
73	LogFlowFunc(("Format %RU32: cfFormat=%RI16, tyMed=%RU32, dwAspect=%RU32\n",
74	i, pFormatEtc[i].cfFormat, pFormatEtc[i].tymed, pFormatEtc[i].dwAspect));
75	mpFormatEtc[i] = pFormatEtc[i];
76	mpStgMedium[i] = pStgMed[i];
77	}
78	}
79
80	hr = S_OK;
81	}
82	catch (std::bad_alloc &)
83	{
84	hr = E_OUTOFMEMORY;
85	}
86
87	if (SUCCEEDED(hr))
88	{
89	int rc2 = RTSemEventCreate(&mSemEvent);
90	AssertRC(rc2);
91
92	/*
93	* Register fixed formats.
94	*/
95	#if 0
96	/* CF_HDROP. */
97	RegisterFormat(&mpFormatEtc[cFormats], CF_HDROP);
98	mpStgMedium[cFormats++].tymed = TYMED_HGLOBAL;
99
100	/* IStream. */
101	RegisterFormat(&mpFormatEtc[cFormats++],
102	RegisterClipboardFormat(CFSTR_FILEDESCRIPTOR));
103	RegisterFormat(&mpFormatEtc[cFormats++],
104	RegisterClipboardFormat(CFSTR_FILECONTENTS),
105	TYMED_ISTREAM, 0 /* lIndex */);
106
107	/* Required for e.g. Windows Media Player. */
108	RegisterFormat(&mpFormatEtc[cFormats++],
109	RegisterClipboardFormat(CFSTR_FILENAME));
110	RegisterFormat(&mpFormatEtc[cFormats++],
111	RegisterClipboardFormat(CFSTR_FILENAMEW));
112	RegisterFormat(&mpFormatEtc[cFormats++],
113	RegisterClipboardFormat(CFSTR_SHELLIDLIST));
114	RegisterFormat(&mpFormatEtc[cFormats++],
115	RegisterClipboardFormat(CFSTR_SHELLIDLISTOFFSET));
116	#endif
117	mcFormats = cFormats;
118	mStatus = Initialized;
119	}
120
121	LogFlowFunc(("cFormats=%RU32, hr=%Rhrc\n", cFormats, hr));
122	}
123
124	VBoxDnDDataObject::~VBoxDnDDataObject(void)
125	{
126	if (mpFormatEtc)
127	delete[] mpFormatEtc;
128
129	if (mpStgMedium)
130	delete[] mpStgMedium;
131
132	if (mpvData)
133	RTMemFree(mpvData);
134
135	LogFlowFunc(("mRefCount=%RI32\n", mRefCount));
136	}
137
138	/*
139	* IUnknown methods.
140	*/
141
142	STDMETHODIMP_(ULONG) VBoxDnDDataObject::AddRef(void)
143	{
144	return InterlockedIncrement(&mRefCount);
145	}
146
147	STDMETHODIMP_(ULONG) VBoxDnDDataObject::Release(void)
148	{
149	LONG lCount = InterlockedDecrement(&mRefCount);
150	if (lCount == 0)
151	{
152	delete this;
153	return 0;
154	}
155
156	return lCount;
157	}
158
159	STDMETHODIMP VBoxDnDDataObject::QueryInterface(REFIID iid, void **ppvObject)
160	{
161	AssertPtrReturn(ppvObject, E_INVALIDARG);
162
163	if ( iid == IID_IDataObject
164	\|\| iid == IID_IUnknown)
165	{
166	AddRef();
167	*ppvObject = this;
168	return S_OK;
169	}
170
171	*ppvObject = 0;
172	return E_NOINTERFACE;
173	}
174
175	/**
176	* Retrieves the data stored in this object and store the result in
177	* pMedium.
178	*
179	* @return IPRT status code.
180	* @return HRESULT
181	* @param pFormatEtc
182	* @param pMedium
183	*/
184	STDMETHODIMP VBoxDnDDataObject::GetData(LPFORMATETC pFormatEtc, LPSTGMEDIUM pMedium)
185	{
186	AssertPtrReturn(pFormatEtc, DV_E_FORMATETC);
187	AssertPtrReturn(pMedium, DV_E_FORMATETC);
188
189	ULONG lIndex;
190	if (!LookupFormatEtc(pFormatEtc, &lIndex)) /* Format supported? */
191	return DV_E_FORMATETC;
192	if (lIndex >= mcFormats) /* Paranoia. */
193	return DV_E_FORMATETC;
194
195	LPFORMATETC pThisFormat = &mpFormatEtc[lIndex];
196	AssertPtr(pThisFormat);
197
198	LPSTGMEDIUM pThisMedium = &mpStgMedium[lIndex];
199	AssertPtr(pThisMedium);
200
201	LogFlowFunc(("Using pThisFormat=%p, pThisMedium=%p\n", pThisFormat, pThisMedium));
202
203	HRESULT hr = DV_E_FORMATETC; /* Play safe. */
204
205	LogFlowFunc(("mStatus=%ld\n", mStatus));
206	if (mStatus == Dropping)
207	{
208	LogFlowFunc(("Waiting for event ...\n"));
209	int rc2 = RTSemEventWait(mSemEvent, RT_INDEFINITE_WAIT);
210	LogFlowFunc(("rc=%Rrc, mStatus=%ld\n", rc2, mStatus));
211	}
212
213	if (mStatus == Dropped)
214	{
215	LogRel3(("DnD: cfFormat=%RI16, sFormat=%s, tyMed=%RU32, dwAspect=%RU32\n",
216	pThisFormat->cfFormat, VBoxDnDDataObject::ClipboardFormatToString(pFormatEtc->cfFormat),
217	pThisFormat->tymed, pThisFormat->dwAspect));
218	LogRel3(("DnD: Got strFormat=%s, pvData=%p, cbData=%RU32\n",
219	mstrFormat.c_str(), mpvData, mcbData));
220
221	/*
222	* Initialize default values.
223	*/
224	pMedium->tymed = pThisFormat->tymed;
225	pMedium->pUnkForRelease = NULL;
226
227	/*
228	* URI list handling.
229	*/
230	if (mstrFormat.equalsIgnoreCase("text/uri-list"))
231	{
232	int rc = VINF_SUCCESS;
233
234	RTCList<RTCString> lstFilesURI = RTCString((char*)mpvData, mcbData).split("\r\n");
235	RTCList<RTCString> lstFiles;
236	for (size_t i = 0; i < lstFilesURI.size(); i++)
237	{
238	char *pszFilePath = RTUriFilePath(lstFilesURI.at(i).c_str());
239	if (pszFilePath)
240	{
241	lstFiles.append(pszFilePath);
242	RTStrFree(pszFilePath);
243	}
244	else /* Unable to parse -- refuse entire request. */
245	{
246	lstFiles.clear();
247	rc = VERR_INVALID_PARAMETER;
248	break;
249	}
250	}
251
252	size_t cFiles = lstFiles.size();
253	if ( RT_SUCCESS(rc)
254	&& cFiles)
255	{
256	#ifdef DEBUG
257	LogFlowFunc(("Files (%zu)\n", cFiles));
258	for (size_t i = 0; i < cFiles; i++)
259	LogFlowFunc(("\tFile: %s\n", lstFiles.at(i).c_str()));
260	#endif
261
262	#if 0
263	if ( (pFormatEtc->tymed & TYMED_ISTREAM)
264	&& (pFormatEtc->dwAspect == DVASPECT_CONTENT)
265	&& (pFormatEtc->cfFormat == CF_FILECONTENTS))
266	{
267
268	}
269	else if ( (pFormatEtc->tymed & TYMED_HGLOBAL)
270	&& (pFormatEtc->dwAspect == DVASPECT_CONTENT)
271	&& (pFormatEtc->cfFormat == CF_FILEDESCRIPTOR))
272	{
273
274	}
275	else if ( (pFormatEtc->tymed & TYMED_HGLOBAL)
276	&& (pFormatEtc->cfFormat == CF_PREFERREDDROPEFFECT))
277	{
278	HGLOBAL hData = GlobalAlloc(GMEM_MOVEABLE \| GMEM_SHARE \| GMEM_ZEROINIT, sizeof(DWORD));
279	DWORD pdwEffect = (DWORD )GlobalLock(hData);
280	AssertPtr(pdwEffect);
281	*pdwEffect = DROPEFFECT_COPY;
282	GlobalUnlock(hData);
283
284	pMedium->hGlobal = hData;
285	pMedium->tymed = TYMED_HGLOBAL;
286	}
287	else
288	#endif
289	if ( (pFormatEtc->tymed & TYMED_HGLOBAL)
290	&& (pFormatEtc->dwAspect == DVASPECT_CONTENT)
291	&& (pFormatEtc->cfFormat == CF_TEXT))
292	{
293	pMedium->hGlobal = GlobalAlloc(GHND, mcbData + 1);
294	if (pMedium->hGlobal)
295	{
296	char pcDst = (char )GlobalLock(pMedium->hGlobal);
297	memcpy(pcDst, mpvData, mcbData);
298	pcDst[mcbData] = '\0';
299	GlobalUnlock(pMedium->hGlobal);
300
301	hr = S_OK;
302	}
303	}
304	else if ( (pFormatEtc->tymed & TYMED_HGLOBAL)
305	&& (pFormatEtc->dwAspect == DVASPECT_CONTENT)
306	&& (pFormatEtc->cfFormat == CF_HDROP))
307	{
308	size_t cchFiles = 0; /* Number of ASCII characters. */
309	for (size_t i = 0; i < cFiles; i++)
310	{
311	cchFiles += strlen(lstFiles.at(i).c_str());
312	cchFiles += 1; /* Terminating '\0'. */
313	}
314
315	size_t cbBuf = sizeof(DROPFILES) + ((cchFiles + 1) * sizeof(RTUTF16));
316	DROPFILES pBuf = (DROPFILES )RTMemAllocZ(cbBuf);
317	if (pBuf)
318	{
319	pBuf->pFiles = sizeof(DROPFILES);
320	pBuf->fWide = 1; /* We use unicode. Always. */
321
322	uint8_t pCurFile = (uint8_t )pBuf + pBuf->pFiles;
323	AssertPtr(pCurFile);
324
325	for (size_t i = 0; i < cFiles && RT_SUCCESS(rc); i++)
326	{
327	size_t cchCurFile;
328	PRTUTF16 pwszFile;
329	rc = RTStrToUtf16(lstFiles.at(i).c_str(), &pwszFile);
330	if (RT_SUCCESS(rc))
331	{
332	cchCurFile = RTUtf16Len(pwszFile);
333	Assert(cchCurFile);
334	memcpy(pCurFile, pwszFile, cchCurFile * sizeof(RTUTF16));
335	RTUtf16Free(pwszFile);
336	}
337	else
338	break;
339
340	pCurFile += cchCurFile * sizeof(RTUTF16);
341
342	/* Terminate current file name. */
343	*pCurFile = L'\0';
344	pCurFile += sizeof(RTUTF16);
345	}
346
347	if (RT_SUCCESS(rc))
348	{
349	pCurFile = L'\0'; / Final list terminator. */
350
351	pMedium->tymed = TYMED_HGLOBAL;
352	pMedium->pUnkForRelease = NULL;
353	pMedium->hGlobal = GlobalAlloc( GMEM_ZEROINIT
354	\| GMEM_MOVEABLE
355	\| GMEM_DDESHARE, cbBuf);
356	if (pMedium->hGlobal)
357	{
358	LPVOID pMem = GlobalLock(pMedium->hGlobal);
359	if (pMem)
360	{
361	memcpy(pMem, pBuf, cbBuf);
362	GlobalUnlock(pMedium->hGlobal);
363
364	hr = S_OK;
365	}
366	}
367	}
368
369	RTMemFree(pBuf);
370	}
371	else
372	rc = VERR_NO_MEMORY;
373	}
374	}
375
376	if (RT_FAILURE(rc))
377	hr = DV_E_FORMATETC;
378	}
379	/*
380	* Plain text handling.
381	*/
382	else if ( mstrFormat.equalsIgnoreCase("text/plain")
383	\|\| mstrFormat.equalsIgnoreCase("text/html")
384	\|\| mstrFormat.equalsIgnoreCase("text/plain;charset=utf-8")
385	\|\| mstrFormat.equalsIgnoreCase("text/plain;charset=utf-16")
386	\|\| mstrFormat.equalsIgnoreCase("text/richtext")
387	\|\| mstrFormat.equalsIgnoreCase("UTF8_STRING")
388	\|\| mstrFormat.equalsIgnoreCase("TEXT")
389	\|\| mstrFormat.equalsIgnoreCase("STRING"))
390	{
391	pMedium->hGlobal = GlobalAlloc(GHND, mcbData + 1);
392	if (pMedium->hGlobal)
393	{
394	char pcDst = (char )GlobalLock(pMedium->hGlobal);
395	memcpy(pcDst, mpvData, mcbData);
396	pcDst[mcbData] = '\0';
397	GlobalUnlock(pMedium->hGlobal);
398
399	hr = S_OK;
400	}
401	}
402	else
403	LogRel(("DnD: Error: Format '%s' not implemented\n", mstrFormat.c_str()));
404	}
405
406	/* Error handling; at least return some basic data. */
407	if (FAILED(hr))
408	{
409	LogFlowFunc(("Copying medium ...\n"));
410	switch (pThisMedium->tymed)
411	{
412
413	case TYMED_HGLOBAL:
414	pMedium->hGlobal = (HGLOBAL)OleDuplicateData(pThisMedium->hGlobal,
415	pThisFormat->cfFormat, NULL);
416	break;
417
418	default:
419	break;
420	}
421
422	pMedium->tymed = pThisFormat->tymed;
423	pMedium->pUnkForRelease = NULL;
424	}
425
426	if (hr == DV_E_FORMATETC)
427	LogRel(("DnD: Error handling format '%s' (%RU32 bytes)\n", mstrFormat.c_str(), mcbData));
428
429	LogFlowFunc(("hr=%Rhrc\n", hr));
430	return hr;
431	}
432
433	/**
434	* Only required for IStream / IStorage interfaces.
435	*
436	* @return IPRT status code.
437	* @return HRESULT
438	* @param pFormatEtc
439	* @param pMedium
440	*/
441	STDMETHODIMP VBoxDnDDataObject::GetDataHere(LPFORMATETC pFormatEtc, LPSTGMEDIUM pMedium)
442	{
443	LogFlowFunc(("\n"));
444	return DATA_E_FORMATETC;
445	}
446
447	/**
448	* Query if this objects supports a specific format.
449	*
450	* @return IPRT status code.
451	* @return HRESULT
452	* @param pFormatEtc
453	*/
454	STDMETHODIMP VBoxDnDDataObject::QueryGetData(LPFORMATETC pFormatEtc)
455	{
456	LogFlowFunc(("\n"));
457	return (LookupFormatEtc(pFormatEtc, NULL /* puIndex */)) ? S_OK : DV_E_FORMATETC;
458	}
459
460	STDMETHODIMP VBoxDnDDataObject::GetCanonicalFormatEtc(LPFORMATETC pFormatEct, LPFORMATETC pFormatEtcOut)
461	{
462	LogFlowFunc(("\n"));
463
464	/* Set this to NULL in any case. */
465	pFormatEtcOut->ptd = NULL;
466	return E_NOTIMPL;
467	}
468
469	STDMETHODIMP VBoxDnDDataObject::SetData(LPFORMATETC pFormatEtc, LPSTGMEDIUM pMedium, BOOL fRelease)
470	{
471	return E_NOTIMPL;
472	}
473
474	STDMETHODIMP VBoxDnDDataObject::EnumFormatEtc(DWORD dwDirection, IEnumFORMATETC **ppEnumFormatEtc)
475	{
476	LogFlowFunc(("dwDirection=%RI32, mcFormats=%RI32, mpFormatEtc=%p\n",
477	dwDirection, mcFormats, mpFormatEtc));
478
479	HRESULT hr;
480	if (dwDirection == DATADIR_GET)
481	{
482	hr = VBoxDnDEnumFormatEtc::CreateEnumFormatEtc(mcFormats, mpFormatEtc, ppEnumFormatEtc);
483	}
484	else
485	hr = E_NOTIMPL;
486
487	LogFlowFunc(("hr=%Rhrc\n", hr));
488	return hr;
489	}
490
491	STDMETHODIMP VBoxDnDDataObject::DAdvise(LPFORMATETC pFormatEtc, DWORD advf, IAdviseSink pAdvSink, DWORD pdwConnection)
492	{
493	return OLE_E_ADVISENOTSUPPORTED;
494	}
495
496	STDMETHODIMP VBoxDnDDataObject::DUnadvise(DWORD dwConnection)
497	{
498	return OLE_E_ADVISENOTSUPPORTED;
499	}
500
501	STDMETHODIMP VBoxDnDDataObject::EnumDAdvise(IEnumSTATDATA **ppEnumAdvise)
502	{
503	return OLE_E_ADVISENOTSUPPORTED;
504	}
505
506	/*
507	* Own stuff.
508	*/
509
510	int VBoxDnDDataObject::Abort(void)
511	{
512	LogFlowFunc(("Aborting ...\n"));
513	mStatus = Aborted;
514	return RTSemEventSignal(mSemEvent);
515	}
516
517	/* static */
518	const char* VBoxDnDDataObject::ClipboardFormatToString(CLIPFORMAT fmt)
519	{
520	#if 0
521	char szFormat[128];
522	if (GetClipboardFormatName(fmt, szFormat, sizeof(szFormat)))
523	LogFlowFunc(("wFormat=%RI16, szName=%s\n", fmt, szFormat));
524	#endif
525
526	switch (fmt)
527	{
528
529	case 1:
530	return "CF_TEXT";
531	case 2:
532	return "CF_BITMAP";
533	case 3:
534	return "CF_METAFILEPICT";
535	case 4:
536	return "CF_SYLK";
537	case 5:
538	return "CF_DIF";
539	case 6:
540	return "CF_TIFF";
541	case 7:
542	return "CF_OEMTEXT";
543	case 8:
544	return "CF_DIB";
545	case 9:
546	return "CF_PALETTE";
547	case 10:
548	return "CF_PENDATA";
549	case 11:
550	return "CF_RIFF";
551	case 12:
552	return "CF_WAVE";
553	case 13:
554	return "CF_UNICODETEXT";
555	case 14:
556	return "CF_ENHMETAFILE";
557	case 15:
558	return "CF_HDROP";
559	case 16:
560	return "CF_LOCALE";
561	case 17:
562	return "CF_DIBV5";
563	case 18:
564	return "CF_MAX";
565	case 49158:
566	return "FileName";
567	case 49159:
568	return "FileNameW";
569	case 49161:
570	return "DATAOBJECT";
571	case 49171:
572	return "Ole Private Data";
573	case 49314:
574	return "Shell Object Offsets";
575	case 49316:
576	return "File Contents";
577	case 49317:
578	return "File Group Descriptor";
579	case 49323:
580	return "Preferred Drop Effect";
581	case 49380:
582	return "Shell Object Offsets";
583	case 49382:
584	return "FileContents";
585	case 49383:
586	return "FileGroupDescriptor";
587	case 49389:
588	return "Preferred DropEffect";
589	case 49268:
590	return "Shell IDList Array";
591	case 49619:
592	return "RenPrivateFileAttachments";
593	default:
594	break;
595	}
596
597	return "unknown";
598	}
599
600	bool VBoxDnDDataObject::LookupFormatEtc(LPFORMATETC pFormatEtc, ULONG *puIndex)
601	{
602	AssertReturn(pFormatEtc, false);
603	/* puIndex is optional. */
604
605	for (ULONG i = 0; i < mcFormats; i++)
606	{
607	if( (pFormatEtc->tymed & mpFormatEtc[i].tymed)
608	&& pFormatEtc->cfFormat == mpFormatEtc[i].cfFormat
609	&& pFormatEtc->dwAspect == mpFormatEtc[i].dwAspect)
610	{
611	LogRel3(("DnD: Format found: tyMed=%RI32, cfFormat=%RI16, sFormats=%s, dwAspect=%RI32, ulIndex=%RU32\n",
612	pFormatEtc->tymed, pFormatEtc->cfFormat, VBoxDnDDataObject::ClipboardFormatToString(mpFormatEtc[i].cfFormat),
613	pFormatEtc->dwAspect, i));
614	if (puIndex)
615	*puIndex = i;
616	return true;
617	}
618	}
619
620	LogRel3(("DnD: Format NOT found: tyMed=%RI32, cfFormat=%RI16, sFormats=%s, dwAspect=%RI32\n",
621	pFormatEtc->tymed, pFormatEtc->cfFormat, VBoxDnDDataObject::ClipboardFormatToString(pFormatEtc->cfFormat),
622	pFormatEtc->dwAspect));
623
624	return false;
625	}
626
627	/* static */
628	HGLOBAL VBoxDnDDataObject::MemDup(HGLOBAL hMemSource)
629	{
630	DWORD dwLen = GlobalSize(hMemSource);
631	AssertReturn(dwLen, NULL);
632	PVOID pvSource = GlobalLock(hMemSource);
633	if (pvSource)
634	{
635	PVOID pvDest = GlobalAlloc(GMEM_FIXED, dwLen);
636	if (pvDest)
637	memcpy(pvDest, pvSource, dwLen);
638
639	GlobalUnlock(hMemSource);
640	return pvDest;
641	}
642
643	return NULL;
644	}
645
646	void VBoxDnDDataObject::RegisterFormat(LPFORMATETC pFormatEtc, CLIPFORMAT clipFormat,
647	TYMED tyMed, LONG lIndex, DWORD dwAspect,
648	DVTARGETDEVICE *pTargetDevice)
649	{
650	AssertPtr(pFormatEtc);
651
652	pFormatEtc->cfFormat = clipFormat;
653	pFormatEtc->tymed = tyMed;
654	pFormatEtc->lindex = lIndex;
655	pFormatEtc->dwAspect = dwAspect;
656	pFormatEtc->ptd = pTargetDevice;
657
658	LogFlowFunc(("Registered format=%ld, sFormat=%s\n",
659	pFormatEtc->cfFormat, VBoxDnDDataObject::ClipboardFormatToString(pFormatEtc->cfFormat)));
660	}
661
662	void VBoxDnDDataObject::SetStatus(Status status)
663	{
664	LogFlowFunc(("Setting status to %ld\n", status));
665	mStatus = status;
666	}
667
668	int VBoxDnDDataObject::Signal(const RTCString &strFormat,
669	const void *pvData, uint32_t cbData)
670	{
671	LogFlowFunc(("Signalling ...\n"));
672
673	int rc;
674
675	mStatus = Dropped;
676	mstrFormat = strFormat;
677	if (cbData)
678	{
679	mpvData = RTMemAlloc(cbData);
680	if (mpvData)
681	{
682	memcpy(mpvData, pvData, cbData);
683	mcbData = cbData;
684	rc = VINF_SUCCESS;
685	}
686	else
687	rc = VERR_NO_MEMORY;
688	}
689	else
690	rc = VINF_SUCCESS;
691
692	if (RT_FAILURE(rc))
693	mStatus = Aborted;
694
695	/* Signal in any case. */
696	int rc2 = RTSemEventSignal(mSemEvent);
697	if (RT_SUCCESS(rc))
698	rc = rc2;
699
700	return rc;
701	}
702

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source: vbox/trunk/src/VBox/Additions/WINNT/VBoxTray/VBoxDnDDataObject.cpp@ 62556

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