// @pymethod interface|PyIShellItem|BindToHandler|Creates an instance of one of the item's handlers
PyObject *PyIShellItem::BindToHandler(PyObject *self, PyObject *args)
{
IShellItem *pISI = GetI(self);
if ( pISI == NULL )
return NULL;
// @pyparm <o PyIBindCtx>|pbc||Used to pass parameters that influence the binding operation, can be None
// @pyparm <o PyIID>|bhid||GUID that identifies a handler (shell.BHID_*)
// @pyparm <o PyIID>|riid||The interface to return
PyObject *obpbc;
PyObject *obbhid;
PyObject *obriid;
IBindCtx *pbc;
IID bhid;
IID riid;
void *pv;
if ( !PyArg_ParseTuple(args, "OOO:BindToHandler", &obpbc, &obbhid, &obriid) )
return NULL;
if (!PyWinObject_AsIID(obbhid, &bhid))
return NULL;
if (!PyWinObject_AsIID(obriid, &riid))
return NULL;
if (!PyCom_InterfaceFromPyInstanceOrObject(obpbc, IID_IBindCtx, (void **)&pbc, TRUE /* bNoneOK */))
return NULL;
HRESULT hr;
PY_INTERFACE_PRECALL;
hr = pISI->BindToHandler( pbc, bhid, riid, &pv );
if (pbc) pbc->Release();
PY_INTERFACE_POSTCALL;
if ( FAILED(hr) )
return PyCom_BuildPyException(hr, pISI, IID_IShellItem );
return PyCom_PyObjectFromIUnknown((IUnknown *)pv, riid, FALSE);
}
HRESULT PreviewGenerator::ShowPreviewWithThumbnailProvider(CString filePath, CLSID clsID)
{
HRESULT hr = CoInitializeEx(NULL, COINIT_APARTMENTTHREADED | COINIT_DISABLE_OLE1DDE);
int nSize = 256;
HBITMAP g_hThumbnail;
IShellItem *psi;
hr = SHCreateItemFromParsingName(filePath, NULL, IID_PPV_ARGS(&psi));
if (hr == S_OK)
{
IThumbnailProvider *pThumbProvider;
hr = psi->BindToHandler(NULL, clsID, IID_PPV_ARGS(&pThumbProvider));
if (hr == S_OK)
{
WTS_ALPHATYPE wtsAlpha;
hr = pThumbProvider->GetThumbnail(nSize, &g_hThumbnail, &wtsAlpha);
}
else
{
}
}
return hr;
}