Method HandleLeftClickDrop

Explorer++/Helper/DropHandler.cpp:126–216

}

void DropHandler::HandleLeftClickDrop(IDataObject *pDataObject,POINTL *pptl)
{
	FORMATETC ftc;
	STGMEDIUM stg;
	DWORD *pdwEffect = NULL;
	DWORD dwEffect = DROPEFFECT_NONE;
	BOOL bPrefferedEffect = FALSE;
	POINT pt;

	pt.x = pptl->x;
	pt.y = pptl->y;

	SetFORMATETC(&ftc,(CLIPFORMAT)RegisterClipboardFormat(CFSTR_PREFERREDDROPEFFECT),
		NULL,DVASPECT_CONTENT,-1,TYMED_HGLOBAL);

	/* Check if the data has a preferred drop effect
	(i.e. copy or move). */
	HRESULT hr = pDataObject->GetData(&ftc,&stg);

	if(hr == S_OK)
	{
		pdwEffect = (DWORD *)GlobalLock(stg.hGlobal);

		if(pdwEffect != NULL)
		{
			if(*pdwEffect != DROPEFFECT_NONE)
			{
				dwEffect = *pdwEffect;
				bPrefferedEffect = TRUE;
			}

			GlobalUnlock(stg.hGlobal);
		}

		ReleaseStgMedium(&stg);
	}

	HRESULT hrCopy = E_FAIL;
	std::list<std::wstring> pastedFileList;

	if(CheckDropFormatSupported(pDataObject,&m_ftcHDrop))
	{
		/* CopyHDropData may copy the data
		in a background thread, so it
		notifies the caller itself (rather
		than returning a list of files
		in PastedFileList). */
		LOG(debug) << _T("Helper - Copying CF_HDROP data");
		hrCopy = CopyHDropData(pDataObject,bPrefferedEffect,dwEffect);
	}
	else if(CheckDropFormatSupported(pDataObject,&m_ftcShellIDList))
	{
		LOG(debug) << _T("Helper - Copying CFSTR_SHELLIDLIST data");
		hrCopy = CopyShellIDListData(pDataObject,pastedFileList);
	}
	else if(CheckDropFormatSupported(pDataObject,&m_ftcFileDescriptorA))
	{
		LOG(debug) << _T("Helper - Copying CFSTR_FILEDESCRIPTORA data");