STDMETHODIMP QOleDataObject::QueryGetData( FORMATETC *pformatetc )
{
#ifdef DEBUG_QDND_SRC
qDebug( "QOleDataObject::QueryGetData( %p )", pformatetc );
#endif
if ( !pformatetc ) {
return E_INVALIDARG;
}
if ( pformatetc->lindex != -1 ) {
return DV_E_LINDEX;
}
if ( pformatetc->dwAspect != DVASPECT_CONTENT ) {
return DV_E_DVASPECT;
}
int tymed = pformatetc->tymed;
/* Currently we only support HGLOBAL */
if ( !( tymed & TYMED_HGLOBAL ) ) {
return DV_E_TYMED;
}
int cf = pformatetc->cfFormat;
QPtrList<QWindowsMime> all = QWindowsMime::all();
for ( QWindowsMime * c = all.first(); c ; c = all.next() ) {
const char * mime = c->mimeFor( cf );
if ( mime && m_dragObj->provides( mime ) ) {
return S_OK;
}
}
return DV_E_FORMATETC;
}
STDMETHODIMP QOleDataObject::GetData( FORMATETC *pformatetcIn, STGMEDIUM *pmedium )
{
// is data is in our format?
HRESULT hr = QueryGetData( pformatetcIn );
if ( hr != S_OK )
return hr;
int cf = pformatetcIn->cfFormat;
pmedium->tymed = TYMED_HGLOBAL;
QPtrList<QWindowsMime> all = QWindowsMime::all();
for ( QWindowsMime * c = all.first(); c ; c = all.next() ) {
const char * mime = c->mimeFor( cf );
if ( mime && m_dragObj->provides( mime ) ) {
QByteArray ba = m_dragObj->encodedData( mime );
ba = c->convertFromMime( ba, mime, cf );
HGLOBAL hGlobal = GlobalAlloc ( GMEM_MOVEABLE | GMEM_SHARE, ba.size() );
if ( !hGlobal )
return E_OUTOFMEMORY;
memcpy ( GlobalLock ( hGlobal ), ba.data(), ba.size() );
GlobalUnlock ( hGlobal );
pmedium->hGlobal = hGlobal;
pmedium->pUnkForRelease = NULL;
return S_OK;
}
}
return E_UNEXPECTED;
}
STDMETHODIMP QOleDataObject::GetDataHere( FORMATETC *pformatetc, STGMEDIUM *pmedium )
{
// is data is in our format?
HRESULT hr = QueryGetData( pformatetc );
if ( hr != S_OK )
return hr;
if ( pmedium->tymed != TYMED_HGLOBAL )
return DV_E_TYMED;
if ( !pmedium->hGlobal )
return STG_E_MEDIUMFULL;
HGLOBAL hGlobal = pmedium->hGlobal;
uint size = GlobalSize( hGlobal );
int cf = pformatetc->cfFormat;
QPtrList<QWindowsMime> all = QWindowsMime::all();
for ( QWindowsMime * c = all.first(); c ; c = all.next() ) {
const char * mime = c->mimeFor( cf );
if ( mime && m_dragObj->provides( mime ) ) {
QByteArray ba = m_dragObj->encodedData( mime );
if ( ba.size() > size )
return STG_E_MEDIUMFULL;
memcpy ( GlobalLock ( hGlobal ), ba.data(), ba.size() );
GlobalUnlock ( hGlobal );
return S_OK;
}
}
return E_UNEXPECTED;
}
const char* QDropEvent::format( int n ) const
{
#ifdef DEBUG_QDND_WIN
qDebug( "QDropEvent::format ( %d )", n );
#endif
if ( !pIDataObject )
return NULL;
FORMATETC fmtMemory = { 0,
NULL,
DVASPECT_CONTENT,
-1,
TYMED_HGLOBAL };
if ( n >= 0 ) {
QPtrList<QWindowsMime> all = QWindowsMime::all();
for ( QWindowsMime * c = all.first(); c ; c = all.next() ) {
for ( int i = 0; i < c->countCf(); i++ ) {
int cf = c->cf( i );
fmtMemory.cfFormat = cf;
if ( pIDataObject->QueryGetData( &fmtMemory ) == S_OK ) {
if ( n == 0 ) {
#ifdef DEBUG_QDND_WIN
qDebug( "format: %s", c->mimeFor( cf ) );
#endif
return c->mimeFor( cf );
}
n--;
}
}
}
}
return NULL;
}
