HRESULT CProjectHierarchyWnd::LocalDragEnter(IDataObject *pDataObj, DWORD /*grfKeyState*/, POINTL /*pt*/, DWORD *pdwEffect)
{
IEnumFORMATETC *pFormatEnum;
m_bAcceptDrag = false;
*pdwEffect = DROPEFFECT_NONE;
if(pDataObj->EnumFormatEtc(DATADIR_GET, &pFormatEnum) == S_OK)
{
FORMATETC formatetc;
while(pFormatEnum->Next(1, &formatetc, NULL) == S_OK)
{
if(formatetc.cfFormat == loadngo::data::TaskDataObject::CF_TASK_ID ||
formatetc.cfFormat == loadngo::data::CUserItemData::CF_USERITEM_ID ||
formatetc.cfFormat == loadngo::data::AnnotationDataObject::CF_ANNOTATION_ID
/*formatetc.cfFormat == CF_TEXT ||
formatetc.cfFormat == CF_UNICODETEXT ||
formatetc.cfFormat == CF_OEMTEXT ||
formatetc.cfFormat == CF_HDROP*/)
{
*pdwEffect = DROPEFFECT_COPY;
m_bAcceptDrag = true;
break;
}
}
}
pFormatEnum->Release();
return S_OK;
}
BOOL CDropTargetEx::EnumDragData(IDataObject *pDataObject)
{
IEnumFORMATETC *pEnumFmt = NULL;
//如果获取成功，则可以通过IEnumFORMATETC接口的Next方法，来枚举所有的数据格式：
HRESULT ret = pDataObject->EnumFormatEtc (DATADIR_GET,&pEnumFmt);
pEnumFmt->Reset ();
HRESULT Ret = S_OK;
FORMATETC cFmt = {0};
ULONG Fetched = 0;
while(Ret != S_OK)
{
Ret = pEnumFmt->Next(1,&cFmt,&Fetched);
if(SUCCEEDED(ret))
{
if( cFmt.cfFormat == CF_HDROP)
{
if(GetDragData(pDataObject,cFmt))
return TRUE;
}
}
else
{
return FALSE;
}
}
return TRUE;
}
/* static */
void VBoxDnDDropTarget::DumpFormats(IDataObject *pDataObject)
{
AssertPtrReturnVoid(pDataObject);
/* Enumerate supported source formats. This shouldn't happen too often
* on day to day use, but still keep it in here. */
IEnumFORMATETC *pEnumFormats;
HRESULT hr2 = pDataObject->EnumFormatEtc(DATADIR_GET, &pEnumFormats);
if (SUCCEEDED(hr2))
{
LogRel(("DnD: The following formats were offered to us:\n"));
FORMATETC curFormatEtc;
while (pEnumFormats->Next(1, &curFormatEtc,
NULL /* pceltFetched */) == S_OK)
{
WCHAR wszCfName[128]; /* 128 chars should be enough, rest will be truncated. */
hr2 = GetClipboardFormatNameW(curFormatEtc.cfFormat, wszCfName,
sizeof(wszCfName) / sizeof(WCHAR));
LogRel(("\tcfFormat=%RI16 (%s), tyMed=%RI32, dwAspect=%RI32, strCustomName=%ls, hr=%Rhrc\n",
curFormatEtc.cfFormat,
VBoxDnDDataObject::ClipboardFormatToString(curFormatEtc.cfFormat),
curFormatEtc.tymed,
curFormatEtc.dwAspect,
wszCfName, hr2));
}
pEnumFormats->Release();
}
}
// Name : wxIDropTarget::DragEnter
// Purpose : Called when the mouse enters the window (dragging something)
// Returns : S_OK
// Params : [in] IDataObject *pIDataSource : source data
// [in] DWORD grfKeyState : kbd & mouse state
// [in] POINTL pt : mouse coordinates
// [in/out]DWORD *pdwEffect : effect flag
// In: Supported effects
// Out: Resulting effect
// Notes :
STDMETHODIMP wxIDropTarget::DragEnter(IDataObject *pIDataSource,
DWORD grfKeyState,
POINTL pt,
DWORD *pdwEffect)
{
wxLogTrace(wxTRACE_OleCalls, wxT("IDropTarget::DragEnter"));
wxASSERT_MSG( m_pIDataObject == NULL,
wxT("drop target must have data object") );
// show the list of formats supported by the source data object for the
// debugging purposes, this is quite useful sometimes - please don't remove
#if 0
IEnumFORMATETC *penumFmt;
if ( SUCCEEDED(pIDataSource->EnumFormatEtc(DATADIR_GET, &penumFmt)) )
{
FORMATETC fmt;
while ( penumFmt->Next(1, &fmt, NULL) == S_OK )
{
wxLogDebug(wxT("Drop source supports format %s"),
wxDataObject::GetFormatName(fmt.cfFormat));
}
penumFmt->Release();
}
else
{
wxLogLastError(wxT("IDataObject::EnumFormatEtc"));
}
#endif // 0
if ( !m_pTarget->MSWIsAcceptedData(pIDataSource) ) {
// we don't accept this kind of data
*pdwEffect = DROPEFFECT_NONE;
return S_OK;
}
// for use in OnEnter and OnDrag calls
m_pTarget->MSWSetDataSource(pIDataSource);
// get hold of the data object
m_pIDataObject = pIDataSource;
m_pIDataObject->AddRef();
// we need client coordinates to pass to wxWin functions
if ( !ScreenToClient(m_hwnd, (POINT *)&pt) )
{
wxLogLastError(wxT("ScreenToClient"));
}
// give some visual feedback
*pdwEffect = ConvertDragResultToEffect(
m_pTarget->OnEnter(pt.x, pt.y, ConvertDragEffectToResult(
GetDropEffect(grfKeyState, m_pTarget->GetDefaultAction(), *pdwEffect))
)
);
return S_OK;
}
static void sFilterNonHGLOBAL(IDataObject* iDataObject, vector<FORMATETC>& oVector)
{
IEnumFORMATETC* theEnum;
if (SUCCEEDED(iDataObject->EnumFormatEtc(DATADIR_GET, &theEnum)))
{
FORMATETC theFORMATETC;
ULONG returnedCount;
while (SUCCEEDED(theEnum->Next(1, &theFORMATETC, &returnedCount)) && returnedCount != 0)
{
if (theFORMATETC.tymed & TYMED_HGLOBAL)
oVector.push_back(theFORMATETC);
}
theEnum->Release();
}
}
// Registers a DataFlavor/FE pair
void nsDataObjCollection::AddDataFlavor(const char * aDataFlavor,
LPFORMATETC aFE)
{
// Add the FormatEtc to our list if it's not already there. We don't care
// about the internal aDataFlavor because nsDataObj handles that.
IEnumFORMATETC * ifEtc;
FORMATETC fEtc;
ULONG num;
if (S_OK != this->EnumFormatEtc(DATADIR_GET, &ifEtc))
return;
while (S_OK == ifEtc->Next(1, &fEtc, &num)) {
NS_ASSERTION(1 == num,
"Bit off more than we can chew in nsDataObjCollection::AddDataFlavor");
if (FormatsMatch(fEtc, *aFE)) {
ifEtc->Release();
return;
}
} // If we didn't find a matching format, add this one
ifEtc->Release();
m_enumFE->AddFormatEtc(aFE);
}
STDMETHODIMP UDropTarget::DragEnter(LPDATAOBJECT pDataObj, DWORD grfKeyState, POINTL pt, LPDWORD pdwEffect)
{
GuiLock __;
LLOG("DragEnter " << pt);
data = pDataObj;
data->AddRef();
fmt.Clear();
IEnumFORMATETC *fe;
if(!ctrl || pDataObj->EnumFormatEtc(DATADIR_GET, &fe) != NOERROR) {
*pdwEffect = DROPEFFECT_NONE;
return NOERROR;
}
FORMATETC fmtetc;
while(fe->Next(1, &fmtetc, 0) == S_OK) {
fmt.FindAdd(FromWin32CF(fmtetc.cfFormat));
if(fmtetc.ptd)
CoTaskMemFree(fmtetc.ptd);
}
fe->Release();
DnD(pt, false, pdwEffect, grfKeyState);
return NOERROR;
}
bool wxClipboard::GetData( wxDataObject& data )
{
#if wxUSE_OLE_CLIPBOARD
IDataObject *pDataObject = NULL;
HRESULT hr = OleGetClipboard(&pDataObject);
if ( FAILED(hr) || !pDataObject )
{
wxLogSysError(hr, _("Failed to get data from the clipboard"));
return false;
}
// build the list of supported formats
size_t nFormats = data.GetFormatCount(wxDataObject::Set);
wxDataFormat format;
wxDataFormat *formats;
if ( nFormats == 1 )
{
// the most common case
formats = &format;
}
else
{
// bad luck, need to alloc mem
formats = new wxDataFormat[nFormats];
}
data.GetAllFormats(formats, wxDataObject::Set);
// get the data for the given formats
FORMATETC formatEtc;
CLIPFORMAT cf;
bool result = false;
// enumerate all explicit formats on the clipboard.
// note that this does not include implicit / synthetic (automatically
// converted) formats.
#ifdef __WXDEBUG__
// get the format enumerator
IEnumFORMATETC *pEnumFormatEtc = NULL;
hr = pDataObject->EnumFormatEtc(DATADIR_GET, &pEnumFormatEtc);
if ( FAILED(hr) || !pEnumFormatEtc )
{
wxLogSysError(hr,
_("Failed to retrieve the supported clipboard formats"));
}
else
{
// ask for the supported formats and see if there are any we support
for ( ;; )
{
ULONG nCount;
hr = pEnumFormatEtc->Next(1, &formatEtc, &nCount);
// don't use FAILED() because S_FALSE would pass it
if ( hr != S_OK )
{
// no more formats
break;
}
cf = formatEtc.cfFormat;
wxLogTrace(wxTRACE_OleCalls,
wxT("Object on the clipboard supports format %s."),
wxDataObject::GetFormatName(cf));
}
pEnumFormatEtc->Release();
}
#endif // Debug
STGMEDIUM medium;
// stop at the first valid format found on the clipboard
for ( size_t n = 0; !result && (n < nFormats); n++ )
{
// convert to NativeFormat Id
cf = formats[n].GetFormatId();
// if the format is not available, try the next one
// this test includes implicit / sythetic formats
if ( !::IsClipboardFormatAvailable(cf) )
continue;
formatEtc.cfFormat = cf;
formatEtc.ptd = NULL;
formatEtc.dwAspect = DVASPECT_CONTENT;
formatEtc.lindex = -1;
// use the appropriate tymed
switch ( formatEtc.cfFormat )
{
case CF_BITMAP:
formatEtc.tymed = TYMED_GDI;
break;
#ifndef __WXWINCE__
case CF_METAFILEPICT:
formatEtc.tymed = TYMED_MFPICT;
break;
case CF_ENHMETAFILE:
formatEtc.tymed = TYMED_ENHMF;
break;
#endif
default:
formatEtc.tymed = TYMED_HGLOBAL;
}
// try to get data
hr = pDataObject->GetData(&formatEtc, &medium);
if ( FAILED(hr) )
{
// try other tymed for GDI objects
if ( formatEtc.cfFormat == CF_BITMAP )
{
formatEtc.tymed = TYMED_HGLOBAL;
hr = pDataObject->GetData(&formatEtc, &medium);
}
}
if ( SUCCEEDED(hr) )
{
// pass the data to the data object
hr = data.GetInterface()->SetData(&formatEtc, &medium, true);
if ( FAILED(hr) )
{
wxLogDebug(wxT("Failed to set data in wxIDataObject"));
// IDataObject only takes the ownership of data if it
// successfully got it - which is not the case here
ReleaseStgMedium(&medium);
}
else
{
result = true;
}
}
//else: unsupported tymed?
}
if ( formats != &format )
{
delete [] formats;
}
//else: we didn't allocate any memory
// clean up and return
pDataObject->Release();
return result;
#elif wxUSE_DATAOBJ
wxCHECK_MSG( wxIsClipboardOpened(), false, wxT("clipboard not open") );
wxDataFormat format = data.GetPreferredFormat();
switch ( format )
{
case wxDF_TEXT:
case wxDF_OEMTEXT:
{
wxTextDataObject& textDataObject = (wxTextDataObject &)data;
char* s = (char*)wxGetClipboardData(format);
if ( !s )
return false;
textDataObject.SetText(wxString::FromAscii(s));
delete [] s;
return true;
}
case wxDF_BITMAP:
case wxDF_DIB:
{
wxBitmapDataObject& bitmapDataObject = (wxBitmapDataObject &)data;
wxBitmap* bitmap = (wxBitmap *)wxGetClipboardData(data.GetPreferredFormat());
if ( !bitmap )
return false;
bitmapDataObject.SetBitmap(*bitmap);
delete bitmap;
return true;
}
#if wxUSE_METAFILE
case wxDF_METAFILE:
{
wxMetafileDataObject& metaFileDataObject = (wxMetafileDataObject &)data;
wxMetafile* metaFile = (wxMetafile *)wxGetClipboardData(wxDF_METAFILE);
if ( !metaFile )
return false;
metaFileDataObject.SetMetafile(*metaFile);
delete metaFile;
return true;
}
#endif // wxUSE_METAFILE
}
return false;
#else // !wxUSE_DATAOBJ
wxFAIL_MSG( wxT("no clipboard implementation") );
return false;
#endif // wxUSE_OLE_CLIPBOARD/wxUSE_DATAOBJ
}
STDMETHODIMP CDDShellExt::Initialize(LPCITEMIDLIST pidlFolder,LPDATAOBJECT pDO,HKEY hProgID)
{
(void)hProgID;
if(!connected)
{
bool b = m_ac.connectToServer();
if (b==true)
{
connected=true;
}
else
return E_FAIL;
}
FORMATETC fmt={CF_HDROP,NULL,DVASPECT_CONTENT,-1,TYMED_HGLOBAL};
STGMEDIUM stg={TYMED_HGLOBAL};
HDROP hDrop;
fDestDir[0]=0;
if (!SHGetPathFromIDList(pidlFolder,fDestDir))
{
#ifdef CATCHCOPY_EXPLORER_PLUGIN_DEBUG
MessageBox(NULL,L"Initialize",L"E_FAIL 1",MB_OK);
#endif // CATCHCOPY_EXPLORER_PLUGIN_DEBUG
return E_FAIL;
}
// Detect if it's explorer that started the operation by enumerating available
// clipboard formats and searching for one that only explorer uses
IEnumFORMATETC *en;
FORMATETC fmt2;
WCHAR fmtName[256]=L"\0";
fFromExplorer=false;
pDO->EnumFormatEtc(DATADIR_GET,&en);
while(en->Next(1,&fmt2,NULL)==S_OK){
GetClipboardFormatName(fmt2.cfFormat,fmtName,256);
if (!wcscmp(fmtName,CFSTR_SHELLIDLIST)) fFromExplorer=true;
}
en->Release();
// Look for CF_HDROP data in the data object. If there
// is no such data, return an error back to Explorer.
if (FAILED(pDO->GetData(&fmt,&stg)))
{
#ifdef CATCHCOPY_EXPLORER_PLUGIN_DEBUG
MessageBox(NULL,L"Initialize",L"E_INVALIDARG 2",MB_OK);
#endif // CATCHCOPY_EXPLORER_PLUGIN_DEBUG
return E_INVALIDARG;
}
// Get a pointer to the actual data.
hDrop=(HDROP)GlobalLock(stg.hGlobal);
// Make sure it worked.
if (hDrop==NULL)
{
#ifdef CATCHCOPY_EXPLORER_PLUGIN_DEBUG
MessageBox(NULL,L"Initialize",L"E_INVALIDARG 1",MB_OK);
#endif // CATCHCOPY_EXPLORER_PLUGIN_DEBUG
return E_INVALIDARG;
}
UINT numFiles,i;
WCHAR fn[MAX_PATH]=L"";
numFiles=DragQueryFile(hDrop,0xFFFFFFFF,NULL,0);
if (numFiles)
{
for(i=0;i<numFiles;++i)
{
if(DragQueryFile(hDrop,i,fn,MAX_PATH))
sources.push_back(fn);
}
}
GlobalUnlock(stg.hGlobal);
ReleaseStgMedium(&stg);
return S_OK;
}
STDMETHODIMP CDropTarget::Drop(IDataObject* pDataObject, DWORD grfKeyState, POINTL pt, DWORD* pdwEffect)
{
#ifdef _DEBUG
printf("IDropTarget::Drop\n");
#endif //_DEBUG
DWORD dwOKEffects = *pdwEffect;
{
//We do this because grfKeyState will always have the mouse button used off
DWORD temp = LastKeyState;
//Get the position of the drop
DragOver(grfKeyState, pt, pdwEffect);
LastKeyState = temp;
}
//Remove the effects
pDataObj = NULL;
DragLeave();
bool copying = (*pdwEffect & DROPEFFECT_COPY) != 0;
size_t totallen = 0;
BYTE *data = NULL;
bool gotdata = false;
UINT *formats = NULL;
UINT numformats = 0;
FORMATETC *fel = NULL;
UINT numfe = 0;
bool NeedToChooseFormat = true;
int IndexOfDataToInsert = -1;
bool NeedToChooseMoveorCopy = (LastKeyState | grfKeyState) & (MK_MBUTTON | MK_RBUTTON) || hexwnd.always_pick_move_copy;
if (hexwnd.dragging) // Internal data
{
hexwnd.dragging = FALSE;
if (NeedToChooseMoveorCopy)
{
int choice = PopupDropMenu(pt);
if (choice == 0)
{
pDataObject->Release();
*pdwEffect = DROPEFFECT_NONE;
return S_OK;
}
copying = choice != 1;
}
int iMove1stEnd = hexwnd.iGetStartOfSelection();
int iMove2ndEndorLen = hexwnd.iGetEndOfSelection();
int iMovePosOrg = hexwnd.new_pos;
if (!copying && hexwnd.new_pos > iMove2ndEndorLen)
hexwnd.new_pos += iMove1stEnd - iMove2ndEndorLen - 1;
iMovePos = hexwnd.new_pos;
iMoveOpTyp = copying ? OPTYP_COPY : OPTYP_MOVE;
SimpleArray<BYTE> olddata;
const int len = iMove2ndEndorLen - iMove1stEnd + 1;
if (grfKeyState & MK_SHIFT) // Overwrite
{
if (copying)
{
//Just [realloc &] memmove
if (iMovePos + len > hexwnd.m_dataArray.GetLength()) // Need more space
{
olddata.AppendArray(&hexwnd.m_dataArray[iMovePos], hexwnd.m_dataArray.GetLength() - iMovePos);
if (hexwnd.m_dataArray.SetSize(iMovePos + len))
{
hexwnd.m_dataArray.ExpandToSize();
memmove(&hexwnd.m_dataArray[iMovePos], &hexwnd.m_dataArray[iMove1stEnd], len);
}
}
else // Enough space
{
olddata.AppendArray(&hexwnd.m_dataArray[iMovePos], len);
memmove(&hexwnd.m_dataArray[iMovePos], &hexwnd.m_dataArray[iMove1stEnd], len);
}
hexwnd.push_undorecord(iMovePos, olddata, olddata.GetLength(), &hexwnd.m_dataArray[iMovePos], len);
}
else //Moving
{
if (iMovePos > iMove1stEnd) //Forward
{
olddata.AppendArray(&hexwnd.m_dataArray[iMove1stEnd], iMovePosOrg + len - iMove1stEnd);
hexwnd.move_copy_sub(iMove1stEnd, iMove2ndEndorLen, 0);
hexwnd.m_dataArray.RemoveAt(iMovePos+len,len);
hexwnd.push_undorecord(iMove1stEnd, olddata, olddata.GetLength(), &hexwnd.m_dataArray[iMove1stEnd], iMovePosOrg - iMove1stEnd);
}
else //Backward
{
if (iMove1stEnd-iMovePos>=len)
{
olddata.AppendArray(&hexwnd.m_dataArray[iMovePos], iMove1stEnd + len - iMovePos);
memmove(&hexwnd.m_dataArray[iMovePos],&hexwnd.m_dataArray[iMove1stEnd],len);
hexwnd.m_dataArray.RemoveAt(iMove1stEnd,len);
}
else
{
olddata.AppendArray(&hexwnd.m_dataArray[iMovePos], iMove1stEnd + len - (iMovePos + len - iMove1stEnd) - iMovePos);
memmove(&hexwnd.m_dataArray[iMovePos],&hexwnd.m_dataArray[iMove1stEnd],len);
hexwnd.m_dataArray.RemoveAt(iMovePos+len,len-(iMovePos + len - iMove1stEnd));
}
hexwnd.push_undorecord(iMovePos, olddata, olddata.GetLength(), &hexwnd.m_dataArray[iMovePos], iMove1stEnd - iMovePos);
}
}
hexwnd.iStartOfSelection = iMovePos;
hexwnd.iEndOfSelection = iMovePos+len-1;
hexwnd.bFilestatusChanged = true;
hexwnd.bSelected = true;
hexwnd.resize_window();
}
else // Insert
{
hexwnd.CMD_move_copy(iMove1stEnd, iMove2ndEndorLen, 1);
}
}
else // External data
{
STGMEDIUM stm;
HRESULT err = E_UNEXPECTED;
//Get the formats enumerator
IEnumFORMATETC *iefe = 0;
pDataObject->EnumFormatEtc(DATADIR_GET, &iefe);
if (iefe == 0)
{
#ifdef _DEBUG
printf("Unable to create a drag-drop data enumerator\n");
#endif //_DEBUG
goto ERR;
}
iefe->Reset();
//Get the available formats
for(;;)
{
void *temp = realloc(fel, (numfe + 1) * sizeof(FORMATETC));
if (temp != NULL)
{
fel = (FORMATETC*) temp;
temp = NULL;
int r;
r = iefe->Next(1, &fel[numfe], NULL);
if (r != S_OK)
break;//No more formats
numfe++;
}
else if (fel == NULL)
{
//We only go here if nothing could be allocated
#ifdef _DEBUG
printf("Not enough memory for the drag-drop format list\n");
#endif //_DEBUG
goto ERR_ENUM;
}
}
UINT i;
/*Check which format should be inserted according to user preferences*/
if (numfe == 0)
{
MessageBox(hexwnd.pwnd, GetLangString(IDS_DD_NO_DATA), MB_OK);
err = S_OK;
*pdwEffect = DROPEFFECT_NONE;
goto ERR_ENUM;
}
if (hexwnd.prefer_CF_HDROP)
{
for (i = 0 ; i < numfe ; i++)
{
if (fel[i].cfFormat == CF_HDROP)
{
//Return no effect & let shell32 handle it
if (S_OK == pDataObject->GetData(&fel[i], &stm))
{
hexwnd.dropfiles((HDROP)stm.hGlobal);
}
err = S_OK;
*pdwEffect = DROPEFFECT_NONE;
goto ERR_ENUM;
}
}
}
if (numfe == 1)
{
IndexOfDataToInsert = 0;
}
else if (hexwnd.prefer_CF_BINARYDATA)
{
for (i = 0 ; i < numfe ; i++)
{
if (fel[i].cfFormat == CF_BINARYDATA)
{
NeedToChooseFormat = false;
IndexOfDataToInsert = i;
break;
}
}
}
else if (hexwnd.prefer_CF_TEXT)
{
for (i = 0 ; i < numfe ; i++)
{
if (fel[i].cfFormat == CF_TEXT)
{
NeedToChooseFormat = false;
IndexOfDataToInsert = i;
break;
}
}
}
if (NeedToChooseFormat)
{
dialog<DragDropDlg> params;
params.allowable_effects = dwOKEffects & (DROPEFFECT_COPY | DROPEFFECT_MOVE);
params.effect = copying;
params.formatetcs = fel;
params.numformatetcs = numfe;
params.formats = NULL;
params.numformats = 0;
int ret = params.DoModal(hexwnd.pwnd);
if (ret < 0)
{
//An error occured or the user canceled the operation
err = S_OK;
*pdwEffect = DROPEFFECT_NONE;
goto ERR_ENUM;
}
numformats = params.numformats;
formats = params.formats;
copying = params.effect;
}
else if (NeedToChooseMoveorCopy)
{
int choice = PopupDropMenu(pt);
if (choice == 0)
{
err = S_OK;
*pdwEffect = DROPEFFECT_NONE;
goto ERR_ENUM;
}
copying = choice != 1;
}
if (IndexOfDataToInsert >= 0 && formats == NULL)
{
formats = (UINT*)&IndexOfDataToInsert;
numformats = 1;
}
//for each selected format
for (i = 0 ; i < numformats ; i++)
{
FORMATETC fe = fel[formats[i]];
/*It is important that when debugging (with M$VC at least) you do not step __into__ the below GetData call
If you do the app providing the data source will die & GetData will return OLE_E_NOTRUNNING or E_FAIL
The solution is to step over the call
It is also possible that a debugger will be opened & attach itself to the data provider
*/
if (pDataObject->GetData(&fe, &stm) == S_OK)
{
//Get len
size_t len = 0;
switch (stm.tymed)
{
case TYMED_HGLOBAL:
len = GlobalSize(stm.hGlobal);
break;
#ifndef __CYGWIN__
case TYMED_FILE:
{
int fh = _wopen(stm.lpszFileName, _O_BINARY | _O_RDONLY);
if (fh != -1)
{
len = _filelength(fh);
if (len == (size_t)-1)
len = 0;
_close(fh);
}
} break;
#endif //__CYGWIN__
case TYMED_ISTREAM:
{
STATSTG stat;
if (S_OK == stm.pstm->Stat(&stat, STATFLAG_NONAME))
len = (size_t)stat.cbSize.LowPart;
}
break;
//This case is going to be a bitch to implement so it can wait for a while
//It will need to be a recursive method that stores the STATSTG structures (+ the name), contents/the bytes of data in streams/property sets
case TYMED_ISTORAGE:
{
MessageBox(hexwnd.pwnd, GetLangString(IDS_DD_TYMED_NOTSUP), MB_OK);
}
break; // IStorage*
case TYMED_GDI:
{
len = GetObject(stm.hBitmap, 0, NULL);
if (len)
{
DIBSECTION t;
GetObject(stm.hBitmap, len, &t);
len += t.dsBm.bmHeight*t.dsBm.bmWidthBytes*t.dsBm.bmPlanes;
}
}
break; // HBITMAP
case TYMED_MFPICT:
{
len = GlobalSize(stm.hMetaFilePict);
METAFILEPICT *pMFP = (METAFILEPICT*)GlobalLock(stm.hMetaFilePict);
if (pMFP)
{
len += GetMetaFileBitsEx(pMFP->hMF, 0, NULL);
GlobalUnlock(stm.hMetaFilePict);
}
}
break; // HMETAFILE
#ifndef __CYGWIN__
case TYMED_ENHMF:
{
len = GetEnhMetaFileHeader(stm.hEnhMetaFile, 0, NULL);
DWORD n = GetEnhMetaFileDescriptionW(stm.hEnhMetaFile, 0, NULL);
if (n && n != GDI_ERROR)
len += sizeof(WCHAR) * n;
len += GetEnhMetaFileBits(stm.hEnhMetaFile, 0, NULL);
n = GetEnhMetaFilePaletteEntries(stm.hEnhMetaFile, 0, NULL);
if (n && n != GDI_ERROR)
len += sizeof(LOGPALETTE) + (n - 1) * sizeof(PALETTEENTRY);
}
break; // HENHMETAFILE
#endif //__CYGWIN__
//case TYMED_NULL:break;
}
if (!len)
continue;
/*Malloc
We do this so that if the data access fails we only need free(data)
and don't need to mess around with the m_dataArray.
Perhaps in the future the m_dataArray can support undoable actions.*/
BYTE* t = (BYTE*)realloc(data, len);
if (!t)
continue;
data = t;
memset(data, 0, len);
//Get data
switch (stm.tymed)
{
case TYMED_HGLOBAL:
{
if (LPVOID pmem = GlobalLock(stm.hGlobal))
{
memcpy(data, pmem, len);
gotdata = true;
GlobalUnlock(stm.hGlobal);
}
}
break;
#ifndef __CYGWIN__
case TYMED_FILE:
{
int fh = _wopen(stm.lpszFileName, _O_BINARY | _O_RDONLY);
if (fh != -1)
{
if (0 < _read(fh, data, len))
gotdata = true;
_close(fh);
}
}
break;
#endif //__CYGWIN__
case TYMED_ISTREAM:
{
LARGE_INTEGER zero = { 0 };
ULARGE_INTEGER pos;
if (S_OK == stm.pstm->Seek(zero, STREAM_SEEK_CUR, &pos))
{
stm.pstm->Seek(zero, STREAM_SEEK_SET, NULL);
if (S_OK == stm.pstm->Read(data, len, NULL))
gotdata = true;
stm.pstm->Seek(*(LARGE_INTEGER*)&pos, STREAM_SEEK_SET, NULL);
}
}
break;
//This case is going to be a bitch to implement so it can wait for a while
//It will need to be a recursive method that stores the STATSTG structures (+ the name), contents/the bytes of data in streams/property sets
case TYMED_ISTORAGE:
{
MessageBox(hexwnd.pwnd, GetLangString(IDS_DD_TYMED_NOTSUP), MB_OK);
goto ERR_ENUM;
}
break;//IStorage*
case TYMED_GDI:
{
int l = GetObject(stm.hBitmap, len, data);
if (l)
{
BITMAP* bm = (BITMAP*)data;
if (bm->bmBits)
memcpy(&data[l], bm->bmBits, len-l);
else
GetBitmapBits(stm.hBitmap, len-l, &data[l]);
gotdata = true;
}
} break; // HBITMAP
case TYMED_MFPICT:
{
if (METAFILEPICT *pMFP = (METAFILEPICT *)GlobalLock(stm.hMetaFilePict))
{
memcpy(data, pMFP, sizeof *pMFP);
GetMetaFileBitsEx(pMFP->hMF, len - sizeof(*pMFP), &data[sizeof(*pMFP)]);
GlobalUnlock(stm.hMetaFilePict);
gotdata = true;
}
} break;//HMETAFILE
#ifndef __CYGWIN__
case TYMED_ENHMF:
{
DWORD i = 0, n = 0, l = len;
n = GetEnhMetaFileHeader(stm.hEnhMetaFile, l, (ENHMETAHEADER*)&data[i]);
l -= n;
i += n;
n = GetEnhMetaFileDescriptionW(stm.hEnhMetaFile,
l / sizeof(WCHAR), (LPWSTR)&data[i]);
if (n && n != GDI_ERROR)
{
n *= sizeof(WCHAR);l -= n; i += n;
}
n = GetEnhMetaFileBits(stm.hEnhMetaFile, l, &data[i]);
l -= n; i += n;
n = GetEnhMetaFilePaletteEntries(stm.hEnhMetaFile, 0, NULL);
if (n && n != GDI_ERROR)
{
LOGPALETTE* lp = (LOGPALETTE*)&data[i];
lp->palVersion = 0x300;
lp->palNumEntries = (USHORT)n;
l -= sizeof(lp->palVersion) + sizeof(lp->palNumEntries);
n = GetEnhMetaFilePaletteEntries(stm.hEnhMetaFile,
l / sizeof(PALETTEENTRY), &lp->palPalEntry[0]);
i += n*sizeof(PALETTEENTRY);
}
if (i)
gotdata = true;
} break; // HENHMETAFILE
#endif //__CYGWIN__
//case TYMED_NULL:break;
}
ReleaseStgMedium(&stm);
if (gotdata)
{
BYTE* DataToInsert = data;
if (fe.cfFormat == CF_BINARYDATA)
{
len = *(DWORD*)data;
DataToInsert += 4;
}
else if (fe.cfFormat == CF_TEXT || fe.cfFormat == CF_OEMTEXT)
{
len = strlen((char*)data);
}
else if (fe.cfFormat == CF_UNICODETEXT)
{
len = sizeof(wchar_t)*wcslen((wchar_t*)data);
}
// Insert/overwrite data into m_dataArray
if (grfKeyState&MK_SHIFT)
{
/* Overwite */
SimpleArray<BYTE> olddata;
DWORD upper = 1 + hexwnd.m_dataArray.GetUpperBound();
if (hexwnd.new_pos+len > upper)
{
olddata.AppendArray(&hexwnd.m_dataArray[hexwnd.new_pos + (int)totallen], upper - hexwnd.new_pos + (int)totallen);
/* Need more space */
if (hexwnd.m_dataArray.SetSize(hexwnd.new_pos + totallen + len))
{
hexwnd.m_dataArray.ExpandToSize();
memcpy(&hexwnd.m_dataArray[hexwnd.new_pos +
(int)totallen], DataToInsert, len);
hexwnd.push_undorecord(hexwnd.new_pos + totallen, olddata, olddata.GetLength(), DataToInsert, len);
gotdata = true;
totallen += len;
}
}
else
{
/* Enough space */
olddata.AppendArray(&hexwnd.m_dataArray[hexwnd.new_pos + (int)totallen], len);
memcpy(&hexwnd.m_dataArray[hexwnd.new_pos +
(int)totallen], DataToInsert, len);
hexwnd.push_undorecord(hexwnd.new_pos + totallen, olddata, olddata.GetLength(), DataToInsert, len);
gotdata = true;
totallen += len;
}
}
else if (hexwnd.m_dataArray.InsertAtGrow(hexwnd.new_pos + totallen, DataToInsert, 0, len))
{
/* Insert */
hexwnd.push_undorecord(hexwnd.new_pos + totallen, NULL, 0, DataToInsert, len);
gotdata = true;
totallen += len;
}
}
}
} // For each selected format
// Release the data
free(data);
data = NULL;
if (IndexOfDataToInsert < 0)
{
free(formats);
formats = NULL;
}
if (gotdata)
{
hexwnd.iStartOfSelection = hexwnd.new_pos;
hexwnd.iEndOfSelection = hexwnd.new_pos + totallen - 1;
hexwnd.bFilestatusChanged = true;
hexwnd.bSelected = true;
hexwnd.resize_window();
hexwnd.synch_sibling();
}
*pdwEffect = copying ? DROPEFFECT_COPY : DROPEFFECT_MOVE;
err = S_OK;
ERR_ENUM:
iefe->Release();
free(fel);
ERR:
pDataObject->Release();
return err;
}
pDataObject->Release();
return S_OK;
}
STDMETHODIMP VBoxDnDDropTarget::DragEnter(IDataObject *pDataObject, DWORD grfKeyState,
POINTL pt, DWORD *pdwEffect)
{
AssertPtrReturn(pDataObject, E_INVALIDARG);
AssertPtrReturn(pdwEffect, E_INVALIDARG);
LogFlowFunc(("pDataObject=0x%p, grfKeyState=0x%x, x=%ld, y=%ld, dwEffect=%RU32\n",
pDataObject, grfKeyState, pt.x, pt.y, *pdwEffect));
reset();
/** @todo At the moment we only support one DnD format at a time. */
/* Try different formats. CF_HDROP is the most common one, so start
* with this. */
FORMATETC fmtEtc = { CF_HDROP, 0, DVASPECT_CONTENT, -1, TYMED_HGLOBAL };
HRESULT hr = pDataObject->QueryGetData(&fmtEtc);
if (hr == S_OK)
{
mFormats = "text/uri-list";
}
else
{
LogFlowFunc(("CF_HDROP not wanted, hr=%Rhrc\n", hr));
/* So we couldn't retrieve the data in CF_HDROP format; try with
* CF_UNICODETEXT + CF_TEXT formats now. Rest stays the same. */
fmtEtc.cfFormat = CF_UNICODETEXT;
hr = pDataObject->QueryGetData(&fmtEtc);
if (hr == S_OK)
{
mFormats = "text/plain;charset=utf-8";
}
else
{
LogFlowFunc(("CF_UNICODETEXT not wanted, hr=%Rhrc\n", hr));
fmtEtc.cfFormat = CF_TEXT;
hr = pDataObject->QueryGetData(&fmtEtc);
if (hr == S_OK)
{
mFormats = "text/plain;charset=utf-8";
}
else
{
LogFlowFunc(("CF_TEXT not wanted, hr=%Rhrc\n", hr));
fmtEtc.cfFormat = 0; /* Mark it to not supported. */
}
}
}
/* Did we find a format that we support? */
if (fmtEtc.cfFormat)
{
LogFlowFunc(("Found supported format %RI16 (%s)\n",
fmtEtc.cfFormat, VBoxDnDDataObject::ClipboardFormatToString(fmtEtc.cfFormat)));
/* Make a copy of the FORMATETC structure so that we later can
* use this for comparrison and stuff. */
/** Note: The DVTARGETDEVICE member only is a shallow copy for now! */
memcpy(&mFormatEtc, &fmtEtc, sizeof(FORMATETC));
/* Which drop effect we're going to use? */
/* Note: pt is not used since we don't need to differentiate within our
* proxy window. */
*pdwEffect = VBoxDnDDropTarget::GetDropEffect(grfKeyState, *pdwEffect);
}
else
{
/* No or incompatible data -- so no drop effect required. */
*pdwEffect = DROPEFFECT_NONE;
switch (hr)
{
case ERROR_INVALID_FUNCTION:
{
LogRel(("DnD: Drag and drop format is not supported by VBoxTray\n"));
/* Enumerate supported source formats. This shouldn't happen too often
* on day to day use, but still keep it in here. */
IEnumFORMATETC *pEnumFormats;
HRESULT hr2 = pDataObject->EnumFormatEtc(DATADIR_GET, &pEnumFormats);
if (SUCCEEDED(hr2))
{
LogRel(("DnD: The following formats were offered to us:\n"));
FORMATETC curFormatEtc;
while (pEnumFormats->Next(1, &curFormatEtc,
NULL /* pceltFetched */) == S_OK)
{
WCHAR wszCfName[128]; /* 128 chars should be enough, rest will be truncated. */
hr2 = GetClipboardFormatNameW(curFormatEtc.cfFormat, wszCfName,
sizeof(wszCfName) / sizeof(WCHAR));
LogRel(("\tcfFormat=%RI16 (%s), tyMed=%RI32, dwAspect=%RI32, strCustomName=%ls, hr=%Rhrc\n",
curFormatEtc.cfFormat,
VBoxDnDDataObject::ClipboardFormatToString(curFormatEtc.cfFormat),
curFormatEtc.tymed,
curFormatEtc.dwAspect,
wszCfName, hr2));
}
pEnumFormats->Release();
}
break;
}
default:
break;
}
}
LogFlowFunc(("Returning cfFormat=%RI16, pdwEffect=%ld, hr=%Rhrc\n",
fmtEtc.cfFormat, *pdwEffect, hr));
return hr;
}