VBoxDnDDataObject.cpp@ 93668

Last change on this file since 93668 was 93115, checked in by vboxsync, 3 years ago
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1	/* $Id: VBoxDnDDataObject.cpp 93115 2022-01-01 11:31:46Z vboxsync $ */
2	/** @file
3	* VBoxDnDDataObject.cpp - IDataObject implementation.
4	*/
5
6	/*
7	* Copyright (C) 2013-2022 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
18
19	#define LOG_GROUP LOG_GROUP_GUEST_DND
20	#include <iprt/win/windows.h>
21	#include <new> /* For bad_alloc. */
22	#include <iprt/win/shlobj.h>
23
24	#include <iprt/path.h>
25	#include <iprt/semaphore.h>
26	#include <iprt/uri.h>
27	#include <iprt/utf16.h>
28
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	: m_enmStatus(Status_Uninitialized),
45	m_cRefs(1),
46	m_cFormats(0),
47	m_pvData(NULL),
48	m_cbData(0)
49	{
50	HRESULT hr;
51
52	ULONG cFixedFormats = 1;
53	ULONG cAllFormats = cFormats + cFixedFormats;
54
55	try
56	{
57	m_paFormatEtc = new FORMATETC[cAllFormats];
58	RT_BZERO(m_paFormatEtc, sizeof(FORMATETC) * cAllFormats);
59	m_paStgMedium = new STGMEDIUM[cAllFormats];
60	RT_BZERO(m_paStgMedium, 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	m_paFormatEtc[i] = pFormatEtc[i];
76	m_paStgMedium[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(&m_EvtDropped);
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	m_cFormats = cFormats;
118	m_enmStatus = Status_Initialized;
119	}
120
121	LogFlowFunc(("cFormats=%RU32, hr=%Rhrc\n", cFormats, hr));
122	}
123
124	VBoxDnDDataObject::~VBoxDnDDataObject(void)
125	{
126	if (m_paFormatEtc)
127	delete[] m_paFormatEtc;
128
129	if (m_paStgMedium)
130	delete[] m_paStgMedium;
131
132	if (m_pvData)
133	RTMemFree(m_pvData);
134
135	LogFlowFunc(("mRefCount=%RI32\n", m_cRefs));
136	}
137
138	/*
139	* IUnknown methods.
140	*/
141
142	STDMETHODIMP_(ULONG) VBoxDnDDataObject::AddRef(void)
143	{
144	return InterlockedIncrement(&m_cRefs);
145	}
146
147	STDMETHODIMP_(ULONG) VBoxDnDDataObject::Release(void)
148	{
149	LONG lCount = InterlockedDecrement(&m_cRefs);
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	STDMETHODIMP VBoxDnDDataObject::GetData(LPFORMATETC pFormatEtc, LPSTGMEDIUM pMedium)
176	{
177	AssertPtrReturn(pFormatEtc, DV_E_FORMATETC);
178	AssertPtrReturn(pMedium, DV_E_FORMATETC);
179
180	ULONG lIndex;
181	if (!LookupFormatEtc(pFormatEtc, &lIndex)) /* Format supported? */
182	return DV_E_FORMATETC;
183	if (lIndex >= m_cFormats) /* Paranoia. */
184	return DV_E_FORMATETC;
185
186	LPFORMATETC pThisFormat = &m_paFormatEtc[lIndex];
187	AssertPtr(pThisFormat);
188
189	LPSTGMEDIUM pThisMedium = &m_paStgMedium[lIndex];
190	AssertPtr(pThisMedium);
191
192	LogFlowFunc(("Using pThisFormat=%p, pThisMedium=%p\n", pThisFormat, pThisMedium));
193
194	HRESULT hr = DV_E_FORMATETC; /* Play safe. */
195
196	LogFlowFunc(("mStatus=%ld\n", m_enmStatus));
197	if (m_enmStatus == Status_Dropping)
198	{
199	LogRel2(("DnD: Waiting for drop event ...\n"));
200	int rc2 = RTSemEventWait(m_EvtDropped, RT_INDEFINITE_WAIT);
201	LogFlowFunc(("rc2=%Rrc, mStatus=%ld\n", rc2, m_enmStatus)); RT_NOREF(rc2);
202	}
203
204	if (m_enmStatus == Status_Dropped)
205	{
206	LogRel2(("DnD: Drop event received\n"));
207	LogRel3(("DnD: cfFormat=%RI16, sFormat=%s, tyMed=%RU32, dwAspect=%RU32\n",
208	pThisFormat->cfFormat, VBoxDnDDataObject::ClipboardFormatToString(pFormatEtc->cfFormat),
209	pThisFormat->tymed, pThisFormat->dwAspect));
210	LogRel3(("DnD: Got strFormat=%s, pvData=%p, cbData=%RU32\n",
211	m_strFormat.c_str(), m_pvData, m_cbData));
212
213	/*
214	* Initialize default values.
215	*/
216	pMedium->tymed = pThisFormat->tymed;
217	pMedium->pUnkForRelease = NULL;
218
219	/*
220	* URI list handling.
221	*/
222	if (DnDMIMEHasFileURLs(m_strFormat.c_str(), RTSTR_MAX))
223	{
224	char **papszFiles;
225	size_t cFiles;
226	int rc = RTStrSplit((const char *)m_pvData, m_cbData, DND_PATH_SEPARATOR_STR, &papszFiles, &cFiles);
227	if ( RT_SUCCESS(rc)
228	&& cFiles)
229	{
230	LogRel2(("DnD: Files (%zu)\n", cFiles));
231	for (size_t i = 0; i < cFiles; i++)
232	LogRel2(("\tDnD: File '%s'\n", papszFiles[i]));
233
234	#if 0
235	if ( (pFormatEtc->tymed & TYMED_ISTREAM)
236	&& (pFormatEtc->dwAspect == DVASPECT_CONTENT)
237	&& (pFormatEtc->cfFormat == CF_FILECONTENTS))
238	{
239
240	}
241	else if ( (pFormatEtc->tymed & TYMED_HGLOBAL)
242	&& (pFormatEtc->dwAspect == DVASPECT_CONTENT)
243	&& (pFormatEtc->cfFormat == CF_FILEDESCRIPTOR))
244	{
245
246	}
247	else if ( (pFormatEtc->tymed & TYMED_HGLOBAL)
248	&& (pFormatEtc->cfFormat == CF_PREFERREDDROPEFFECT))
249	{
250	HGLOBAL hData = GlobalAlloc(GMEM_MOVEABLE \| GMEM_SHARE \| GMEM_ZEROINIT, sizeof(DWORD));
251	DWORD pdwEffect = (DWORD )GlobalLock(hData);
252	AssertPtr(pdwEffect);
253	*pdwEffect = DROPEFFECT_COPY;
254	GlobalUnlock(hData);
255
256	pMedium->hGlobal = hData;
257	pMedium->tymed = TYMED_HGLOBAL;
258	}
259	else
260	#endif
261	if ( (pFormatEtc->tymed & TYMED_HGLOBAL)
262	&& (pFormatEtc->dwAspect == DVASPECT_CONTENT)
263	&& (pFormatEtc->cfFormat == CF_TEXT))
264	{
265	pMedium->hGlobal = GlobalAlloc(GHND, m_cbData + 1);
266	if (pMedium->hGlobal)
267	{
268	char pcDst = (char )GlobalLock(pMedium->hGlobal);
269	memcpy(pcDst, m_pvData, m_cbData);
270	pcDst[m_cbData] = '\0';
271	GlobalUnlock(pMedium->hGlobal);
272
273	hr = S_OK;
274	}
275	}
276	else if ( (pFormatEtc->tymed & TYMED_HGLOBAL)
277	&& (pFormatEtc->dwAspect == DVASPECT_CONTENT)
278	&& (pFormatEtc->cfFormat == CF_HDROP))
279	{
280	size_t cchFiles = 0; /* Number of ASCII characters. */
281	for (size_t i = 0; i < cFiles; i++)
282	{
283	cchFiles += strlen(papszFiles[i]);
284	cchFiles += 1; /* Terminating '\0'. */
285	}
286
287	size_t cbBuf = sizeof(DROPFILES) + ((cchFiles + 1) * sizeof(RTUTF16));
288	DROPFILES pBuf = (DROPFILES )RTMemAllocZ(cbBuf);
289	if (pBuf)
290	{
291	pBuf->pFiles = sizeof(DROPFILES);
292	pBuf->fWide = 1; /* We use unicode. Always. */
293
294	uint8_t pCurFile = (uint8_t )pBuf + pBuf->pFiles;
295	AssertPtr(pCurFile);
296
297	for (size_t i = 0; i < cFiles && RT_SUCCESS(rc); i++)
298	{
299	size_t cchCurFile;
300	PRTUTF16 pwszFile;
301	rc = RTStrToUtf16(papszFiles[i], &pwszFile);
302	if (RT_SUCCESS(rc))
303	{
304	cchCurFile = RTUtf16Len(pwszFile);
305	Assert(cchCurFile);
306	memcpy(pCurFile, pwszFile, cchCurFile * sizeof(RTUTF16));
307	RTUtf16Free(pwszFile);
308	}
309	else
310	break;
311
312	pCurFile += cchCurFile * sizeof(RTUTF16);
313
314	/* Terminate current file name. */
315	*pCurFile = L'\0';
316	pCurFile += sizeof(RTUTF16);
317	}
318
319	if (RT_SUCCESS(rc))
320	{
321	pCurFile = L'\0'; / Final list terminator. */
322
323	pMedium->tymed = TYMED_HGLOBAL;
324	pMedium->pUnkForRelease = NULL;
325	pMedium->hGlobal = GlobalAlloc( GMEM_ZEROINIT
326	\| GMEM_MOVEABLE
327	\| GMEM_DDESHARE, cbBuf);
328	if (pMedium->hGlobal)
329	{
330	LPVOID pMem = GlobalLock(pMedium->hGlobal);
331	if (pMem)
332	{
333	memcpy(pMem, pBuf, cbBuf);
334	GlobalUnlock(pMedium->hGlobal);
335
336	hr = S_OK;
337	}
338	}
339	}
340
341	RTMemFree(pBuf);
342	}
343	else
344	rc = VERR_NO_MEMORY;
345	}
346
347	for (size_t i = 0; i < cFiles; ++i)
348	RTStrFree(papszFiles[i]);
349	RTMemFree(papszFiles);
350	}
351
352	if (RT_FAILURE(rc))
353	hr = DV_E_FORMATETC;
354	}
355	/*
356	* Plain text handling.
357	*/
358	else if ( m_strFormat.equalsIgnoreCase("text/plain")
359	\|\| m_strFormat.equalsIgnoreCase("text/html")
360	\|\| m_strFormat.equalsIgnoreCase("text/plain;charset=utf-8")
361	\|\| m_strFormat.equalsIgnoreCase("text/plain;charset=utf-16")
362	\|\| m_strFormat.equalsIgnoreCase("text/richtext")
363	\|\| m_strFormat.equalsIgnoreCase("UTF8_STRING")
364	\|\| m_strFormat.equalsIgnoreCase("TEXT")
365	\|\| m_strFormat.equalsIgnoreCase("STRING"))
366	{
367	pMedium->hGlobal = GlobalAlloc(GHND, m_cbData + 1);
368	if (pMedium->hGlobal)
369	{
370	char pcDst = (char )GlobalLock(pMedium->hGlobal);
371	memcpy(pcDst, m_pvData, m_cbData);
372	pcDst[m_cbData] = '\0';
373	GlobalUnlock(pMedium->hGlobal);
374
375	hr = S_OK;
376	}
377	}
378	else
379	LogRel(("DnD: Error: Format '%s' not implemented\n", m_strFormat.c_str()));
380	}
381
382	/* Error handling; at least return some basic data. */
383	if (FAILED(hr))
384	{
385	LogFlowFunc(("Copying medium ...\n"));
386	switch (pThisMedium->tymed)
387	{
388
389	case TYMED_HGLOBAL:
390	pMedium->hGlobal = (HGLOBAL)OleDuplicateData(pThisMedium->hGlobal,
391	pThisFormat->cfFormat, NULL);
392	break;
393
394	default:
395	break;
396	}
397
398	pMedium->tymed = pThisFormat->tymed;
399	pMedium->pUnkForRelease = NULL;
400	}
401
402	if (hr == DV_E_FORMATETC)
403	LogRel(("DnD: Error handling format '%s' (%RU32 bytes)\n", m_strFormat.c_str(), m_cbData));
404
405	LogFlowFunc(("hr=%Rhrc\n", hr));
406	return hr;
407	}
408
409	STDMETHODIMP VBoxDnDDataObject::GetDataHere(LPFORMATETC pFormatEtc, LPSTGMEDIUM pMedium)
410	{
411	RT_NOREF(pFormatEtc, pMedium);
412	LogFlowFunc(("\n"));
413	return DATA_E_FORMATETC;
414	}
415
416	STDMETHODIMP VBoxDnDDataObject::QueryGetData(LPFORMATETC pFormatEtc)
417	{
418	LogFlowFunc(("\n"));
419	return (LookupFormatEtc(pFormatEtc, NULL /* puIndex */)) ? S_OK : DV_E_FORMATETC;
420	}
421
422	STDMETHODIMP VBoxDnDDataObject::GetCanonicalFormatEtc(LPFORMATETC pFormatEtc, LPFORMATETC pFormatEtcOut)
423	{
424	RT_NOREF(pFormatEtc);
425	LogFlowFunc(("\n"));
426
427	/* Set this to NULL in any case. */
428	pFormatEtcOut->ptd = NULL;
429	return E_NOTIMPL;
430	}
431
432	STDMETHODIMP VBoxDnDDataObject::SetData(LPFORMATETC pFormatEtc, LPSTGMEDIUM pMedium, BOOL fRelease)
433	{
434	RT_NOREF(pFormatEtc, pMedium, fRelease);
435	return E_NOTIMPL;
436	}
437
438	STDMETHODIMP VBoxDnDDataObject::EnumFormatEtc(DWORD dwDirection, IEnumFORMATETC **ppEnumFormatEtc)
439	{
440	LogFlowFunc(("dwDirection=%RI32, mcFormats=%RI32, mpFormatEtc=%p\n", dwDirection, m_cFormats, m_paFormatEtc));
441
442	HRESULT hr;
443	if (dwDirection == DATADIR_GET)
444	hr = VBoxDnDEnumFormatEtc::CreateEnumFormatEtc(m_cFormats, m_paFormatEtc, ppEnumFormatEtc);
445	else
446	hr = E_NOTIMPL;
447
448	LogFlowFunc(("hr=%Rhrc\n", hr));
449	return hr;
450	}
451
452	STDMETHODIMP VBoxDnDDataObject::DAdvise(LPFORMATETC pFormatEtc, DWORD fAdvise, IAdviseSink pAdvSink, DWORD pdwConnection)
453	{
454	RT_NOREF(pFormatEtc, fAdvise, pAdvSink, pdwConnection);
455	return OLE_E_ADVISENOTSUPPORTED;
456	}
457
458	STDMETHODIMP VBoxDnDDataObject::DUnadvise(DWORD dwConnection)
459	{
460	RT_NOREF(dwConnection);
461	return OLE_E_ADVISENOTSUPPORTED;
462	}
463
464	STDMETHODIMP VBoxDnDDataObject::EnumDAdvise(IEnumSTATDATA **ppEnumAdvise)
465	{
466	RT_NOREF(ppEnumAdvise);
467	return OLE_E_ADVISENOTSUPPORTED;
468	}
469
470	/*
471	* Own stuff.
472	*/
473
474	/**
475	* Aborts waiting for data being "dropped".
476	*
477	* @returns VBox status code.
478	*/
479	int VBoxDnDDataObject::Abort(void)
480	{
481	LogFlowFunc(("Aborting ...\n"));
482	m_enmStatus = Status_Aborted;
483	return RTSemEventSignal(m_EvtDropped);
484	}
485
486	/**
487	* Static helper function to convert a CLIPFORMAT to a string and return it.
488	*
489	* @returns Pointer to converted stringified CLIPFORMAT, or "unknown" if not found / invalid.
490	* @param fmt CLIPFORMAT to return string for.
491	*/
492	/* static */
493	const char* VBoxDnDDataObject::ClipboardFormatToString(CLIPFORMAT fmt)
494	{
495	#if 0
496	char szFormat[128];
497	if (GetClipboardFormatName(fmt, szFormat, sizeof(szFormat)))
498	LogFlowFunc(("wFormat=%RI16, szName=%s\n", fmt, szFormat));
499	#endif
500
501	switch (fmt)
502	{
503
504	case 1:
505	return "CF_TEXT";
506	case 2:
507	return "CF_BITMAP";
508	case 3:
509	return "CF_METAFILEPICT";
510	case 4:
511	return "CF_SYLK";
512	case 5:
513	return "CF_DIF";
514	case 6:
515	return "CF_TIFF";
516	case 7:
517	return "CF_OEMTEXT";
518	case 8:
519	return "CF_DIB";
520	case 9:
521	return "CF_PALETTE";
522	case 10:
523	return "CF_PENDATA";
524	case 11:
525	return "CF_RIFF";
526	case 12:
527	return "CF_WAVE";
528	case 13:
529	return "CF_UNICODETEXT";
530	case 14:
531	return "CF_ENHMETAFILE";
532	case 15:
533	return "CF_HDROP";
534	case 16:
535	return "CF_LOCALE";
536	case 17:
537	return "CF_DIBV5";
538	case 18:
539	return "CF_MAX";
540	case 49158:
541	return "FileName";
542	case 49159:
543	return "FileNameW";
544	case 49161:
545	return "DATAOBJECT";
546	case 49171:
547	return "Ole Private Data";
548	case 49314:
549	return "Shell Object Offsets";
550	case 49316:
551	return "File Contents";
552	case 49317:
553	return "File Group Descriptor";
554	case 49323:
555	return "Preferred Drop Effect";
556	case 49380:
557	return "Shell Object Offsets";
558	case 49382:
559	return "FileContents";
560	case 49383:
561	return "FileGroupDescriptor";
562	case 49389:
563	return "Preferred DropEffect";
564	case 49268:
565	return "Shell IDList Array";
566	case 49619:
567	return "RenPrivateFileAttachments";
568	default:
569	break;
570	}
571
572	return "unknown";
573	}
574
575	/**
576	* Checks whether a given FORMATETC is supported by this data object and returns its index.
577	*
578	* @returns \c true if format is supported, \c false if not.
579	* @param pFormatEtc Pointer to FORMATETC to check for.
580	* @param puIndex Where to store the index if format is supported.
581	*/
582	bool VBoxDnDDataObject::LookupFormatEtc(LPFORMATETC pFormatEtc, ULONG *puIndex)
583	{
584	AssertReturn(pFormatEtc, false);
585	/* puIndex is optional. */
586
587	for (ULONG i = 0; i < m_cFormats; i++)
588	{
589	if( (pFormatEtc->tymed & m_paFormatEtc[i].tymed)
590	&& pFormatEtc->cfFormat == m_paFormatEtc[i].cfFormat
591	&& pFormatEtc->dwAspect == m_paFormatEtc[i].dwAspect)
592	{
593	LogRel3(("DnD: Format found: tyMed=%RI32, cfFormat=%RI16, sFormats=%s, dwAspect=%RI32, ulIndex=%RU32\n",
594	pFormatEtc->tymed, pFormatEtc->cfFormat, VBoxDnDDataObject::ClipboardFormatToString(m_paFormatEtc[i].cfFormat),
595	pFormatEtc->dwAspect, i));
596	if (puIndex)
597	*puIndex = i;
598	return true;
599	}
600	}
601
602	LogRel3(("DnD: Format NOT found: tyMed=%RI32, cfFormat=%RI16, sFormats=%s, dwAspect=%RI32\n",
603	pFormatEtc->tymed, pFormatEtc->cfFormat, VBoxDnDDataObject::ClipboardFormatToString(pFormatEtc->cfFormat),
604	pFormatEtc->dwAspect));
605
606	return false;
607	}
608
609	/**
610	* Registers a new format with this data object.
611	*
612	* @param pFormatEtc Where to store the new format into.
613	* @param clipFormat Clipboard format to register.
614	* @param tyMed Format medium type to register.
615	* @param lIndex Format index to register.
616	* @param dwAspect Format aspect to register.
617	* @param pTargetDevice Format target device to register.
618	*/
619	void VBoxDnDDataObject::RegisterFormat(LPFORMATETC pFormatEtc, CLIPFORMAT clipFormat,
620	TYMED tyMed, LONG lIndex, DWORD dwAspect,
621	DVTARGETDEVICE *pTargetDevice)
622	{
623	AssertPtr(pFormatEtc);
624
625	pFormatEtc->cfFormat = clipFormat;
626	pFormatEtc->tymed = tyMed;
627	pFormatEtc->lindex = lIndex;
628	pFormatEtc->dwAspect = dwAspect;
629	pFormatEtc->ptd = pTargetDevice;
630
631	LogFlowFunc(("Registered format=%ld, sFormat=%s\n",
632	pFormatEtc->cfFormat, VBoxDnDDataObject::ClipboardFormatToString(pFormatEtc->cfFormat)));
633	}
634
635	/**
636	* Sets the current status of this data object.
637	*
638	* @param status New status to set.
639	*/
640	void VBoxDnDDataObject::SetStatus(Status status)
641	{
642	LogFlowFunc(("Setting status to %ld\n", status));
643	m_enmStatus = status;
644	}
645
646	/**
647	* Signals that data has been "dropped".
648	*
649	* @returns VBox status code.
650	* @param strFormat Format of data (MIME string).
651	* @param pvData Pointer to data.
652	* @param cbData Size (in bytes) of data.
653	*/
654	int VBoxDnDDataObject::Signal(const RTCString &strFormat,
655	const void *pvData, size_t cbData)
656	{
657	int rc;
658
659	if (cbData)
660	{
661	m_pvData = RTMemAlloc(cbData);
662	if (m_pvData)
663	{
664	memcpy(m_pvData, pvData, cbData);
665	m_cbData = cbData;
666	rc = VINF_SUCCESS;
667	}
668	else
669	rc = VERR_NO_MEMORY;
670	}
671	else
672	rc = VINF_SUCCESS;
673
674	if (RT_SUCCESS(rc))
675	{
676	m_enmStatus = Status_Dropped;
677	m_strFormat = strFormat;
678	}
679	else
680	{
681	m_enmStatus = Status_Aborted;
682	}
683
684	/* Signal in any case. */
685	LogRel2(("DnD: Signalling drop event\n"));
686
687	int rc2 = RTSemEventSignal(m_EvtDropped);
688	if (RT_SUCCESS(rc))
689	rc = rc2;
690
691	LogFunc(("mStatus=%RU32, rc=%Rrc\n", m_enmStatus, rc));
692	return rc;
693	}
694

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source: vbox/trunk/src/VBox/Additions/WINNT/VBoxTray/VBoxDnDDataObject.cpp@ 93668

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