void _ecore_win32_dnd_drop_source_free(void *drop_source)
{
if (!drop_source)
return;
IDropSource *object = (IDropSource *)drop_source;
object->Release();
}
void Explorerplusplus::OnAddressBarBeginDrag(void)
{
IDragSourceHelper *pDragSourceHelper = NULL;
IDropSource *pDropSource = NULL;
HRESULT hr;
hr = CoCreateInstance(CLSID_DragDropHelper,NULL,CLSCTX_ALL,
IID_IDragSourceHelper,(LPVOID *)&pDragSourceHelper);
if(SUCCEEDED(hr))
{
hr = CreateDropSource(&pDropSource,DRAG_TYPE_LEFTCLICK);
if(SUCCEEDED(hr))
{
LPITEMIDLIST pidlDirectory = m_pActiveShellBrowser->QueryCurrentDirectoryIdl();
FORMATETC ftc[2];
STGMEDIUM stg[2];
SetFORMATETC(&ftc[0],(CLIPFORMAT)RegisterClipboardFormat(CFSTR_FILEDESCRIPTOR),
NULL,DVASPECT_CONTENT,-1,TYMED_HGLOBAL);
HGLOBAL hglb = GlobalAlloc(GMEM_MOVEABLE,1000);
FILEGROUPDESCRIPTOR *pfgd = static_cast<FILEGROUPDESCRIPTOR *>(GlobalLock(hglb));
pfgd->cItems = 1;
FILEDESCRIPTOR *pfd = (FILEDESCRIPTOR *)((LPBYTE)pfgd + sizeof(UINT));
/* File information (name, size, date created, etc). */
pfd[0].dwFlags = FD_ATTRIBUTES|FD_FILESIZE;
pfd[0].dwFileAttributes = FILE_ATTRIBUTE_NORMAL;
pfd[0].nFileSizeLow = 16384;
pfd[0].nFileSizeHigh = 0;
/* The name of the file will be the folder name, followed by .lnk. */
TCHAR szDisplayName[MAX_PATH];
GetDisplayName(pidlDirectory,szDisplayName,SHGDN_INFOLDER);
StringCchCat(szDisplayName,SIZEOF_ARRAY(szDisplayName),_T(".lnk"));
StringCchCopy(pfd[0].cFileName,SIZEOF_ARRAY(pfd[0].cFileName),szDisplayName);
GlobalUnlock(hglb);
stg[0].pUnkForRelease = 0;
stg[0].hGlobal = hglb;
stg[0].tymed = TYMED_HGLOBAL;
/* File contents. */
SetFORMATETC(&ftc[1],(CLIPFORMAT)RegisterClipboardFormat(CFSTR_FILECONTENTS),
NULL,DVASPECT_CONTENT,-1,TYMED_HGLOBAL);
hglb = GlobalAlloc(GMEM_MOVEABLE,16384);
IShellLink *pShellLink = NULL;
IPersistStream *pPersistStream = NULL;
HRESULT hr;
hr = CoCreateInstance(CLSID_ShellLink,NULL,CLSCTX_INPROC_SERVER,
IID_IShellLink,(LPVOID*)&pShellLink);
if(SUCCEEDED(hr))
{
TCHAR szPath[MAX_PATH];
GetDisplayName(pidlDirectory,szPath,SHGDN_FORPARSING);
pShellLink->SetPath(szPath);
hr = pShellLink->QueryInterface(IID_IPersistStream,(LPVOID*)&pPersistStream);
if(SUCCEEDED(hr))
{
IStream *pStream = NULL;
CreateStreamOnHGlobal(hglb,FALSE,&pStream);
hr = pPersistStream->Save(pStream,TRUE);
}
}
GlobalUnlock(hglb);
stg[1].pUnkForRelease = 0;
stg[1].hGlobal = hglb;
stg[1].tymed = TYMED_HGLOBAL;
IDataObject *pDataObject = NULL;
POINT pt = {0,0};
hr = CreateDataObject(ftc,stg,&pDataObject,2);
pDragSourceHelper->InitializeFromWindow(m_hAddressBar,&pt,pDataObject);
DWORD dwEffect;
DoDragDrop(pDataObject,pDropSource,DROPEFFECT_LINK,&dwEffect);
CoTaskMemFree(pidlDirectory);
pDataObject->Release();
pDropSource->Release();
}
pDragSourceHelper->Release();
}
}
// The user started to move a link in the trace ctl
int POTraceCtl::OnLinkDragBegin(const String& strUrl)
{
int nDragResult = dragNone;
///////////////////////////////////////////////////////////
// Allocate resource for the data to share between PngOptimizer and the target application
// Here it will be some bytes to store a file path
HGLOBAL hgDrop = CreateDropFilesW(strUrl);
/////////////////////////////////////////////////////////
FORMATETC etc;
etc.cfFormat = CF_HDROP; // CLIPFORMAT
etc.ptd = NULL; // DVTARGETDEVICE*
etc.dwAspect = DVASPECT_CONTENT; // DWORD
etc.lindex = -1; // LONG
etc.tymed = TYMED_HGLOBAL; // DWORD
STGMEDIUM med;
med.tymed = TYMED_HGLOBAL;
med.hGlobal = hgDrop;
med.pUnkForRelease = NULL;
IDataObject* pDataObject = new PlopDataObject;
if( pDataObject )
{
pDataObject->SetData(&etc, &med, TRUE);
IDropSource* pDropSource = new PlopDropSource;
if( pDropSource )
{
// Forbid drag-and-drop on ourself
::DragAcceptFiles( ::GetParent(m_handle), FALSE);
// DoDragDrop will manage the rest of the action and will return when a drag-and-drop action is done
DWORD nEffect = 0;
HRESULT hr = ::DoDragDrop(pDataObject, pDropSource, DROPEFFECT_MOVE | DROPEFFECT_COPY | DROPEFFECT_LINK, &nEffect);
// Unless an optimization is in progress, enable again drag-and-drop on ourself
if( !m_pApp->IsJobRunning() )
{
::DragAcceptFiles( ::GetParent(m_handle), TRUE);
}
if( hr == DRAGDROP_S_DROP )
{
// Testing proved that we cannot rely on the return code given by Windows to know the exact
// operation that occurred during DoDragDrop. It depends on the target application,
// it depends on the Windows version and maybe the position of the stars in the sky
// So we check ourselves if DoDragDrop performed a copy or a move by testing if our file is still here
if( !File::Exists(strUrl) )
{
// The source file does not exist anymore, then it was a move operation
nDragResult = dragMove;
}
else
{
nDragResult = dragCopy;
}
}
pDropSource->Release();
}
pDataObject->Release();
}
GlobalFree(hgDrop);
return nDragResult;
}