function OpenXML_ChartGetInfoFromFile($idx, $Txt=false) {

		if ($idx===false) return false;

		$file = $this->CdFileLst[$idx]['v_name'];
		$relative = (substr_count($file, '/')==1) ? '' : '../';
		$o = $this->OpenXML_Rels_GetObj($file, $relative.'charts/');

		if ($o->ChartLst===false) {

			if ($Txt===false) $Txt = $this->TbsStoreGet($idx, 'OpenXML_ChartGetInfoFromFile');

			$o->ChartLst = array();

			$p = 0;
			while ($t = clsTbsXmlLoc::FindStartTag($Txt, 'c:chart', $p)) {
				$rid = $t->GetAttLazy('r:id');
				$name = false;
				$title = false;
				$descr = false;
				$parent = clsTbsXmlLoc::FindStartTag($Txt, 'wp:inline', $t->PosBeg, false); // docx
				if ($parent===false) $parent = clsTbsXmlLoc::FindStartTag($Txt, 'p:nvGraphicFramePr', $t->PosBeg, false); // pptx
				if ($parent!==false) {
					$parent->FindEndTag();
					$src = $parent->GetInnerSrc();
					$el = clsTbsXmlLoc::FindStartTagHavingAtt($src, 'title', 0);
					if ($el!==false) $title = $el->GetAttLazy('title');
					$el = clsTbsXmlLoc::FindStartTagHavingAtt($src, 'descr', 0);
					if ($el!==false) $descr = $el->GetAttLazy('descr');
				}

				if (isset($o->TargetLst[$rid])) {
					$name = basename($o->TargetLst[$rid]);
					if (substr($name,-4)==='.xml') $name = substr($name,0,strlen($name)-4);
				}
				$o->ChartLst[] = array('rid'=>$rid, 'title'=>$title, 'descr'=>$descr, 'name'=>$name);
				$p = $t->PosEnd;
			}

		}

		return $o->ChartLst;

	}
function OpenXML_ChartGetInfoFromFile($idx, $Txt=false) {

		if ($idx===false) return false;

		$file = $this->CdFileLst[$idx]['v_name'];
		$relative = (substr_count($file, '/')==1) ? '' : '../';
		$o = $this->OpenXML_Rels_GetObj($file, $relative.'charts/');

		if ($o->ChartLst===false) {

			if ($Txt===false) $Txt = $this->TbsStoreGet($idx, 'OpenXML_ChartGetInfoFromFile');

			$o->ChartLst = array();

			$p = 0;
			while ($t = clsTbsXmlLoc::FindStartTag($Txt, 'c:chart', $p)) {
				$rid = $t->GetAttLazy('r:id');
				$name = false;
				$title = false;
				$descr = false;
				$parent = clsTbsXmlLoc::FindStartTag($Txt, 'wp:inline', $t->PosBeg, false); // docx
				if ($parent===false) $parent = clsTbsXmlLoc::FindStartTag($Txt, 'p:nvGraphicFramePr', $t->PosBeg, false); // pptx
				if ($parent!==false) {
					$parent->FindEndTag();
					$src = $parent->GetInnerSrc();
					$el = clsTbsXmlLoc::FindStartTagHavingAtt($src, 'title', 0);
					if ($el!==false) $title = $el->GetAttLazy('title');
					$el = clsTbsXmlLoc::FindStartTagHavingAtt($src, 'descr', 0);
					if ($el!==false) $descr = $el->GetAttLazy('descr');
				}

				if (isset($o->TargetLst[$rid])) {
					$name = basename($o->TargetLst[$rid]);
					if (substr($name,-4)==='.xml') $name = substr($name,0,strlen($name)-4);
				}
				$o->ChartLst[] = array('rid'=>$rid, 'title'=>$title, 'descr'=>$descr, 'name'=>$name);
				$p = $t->PosEnd;
			}

		}

		return $o->ChartLst;

	}
Return the list of all charts in the current sub-file, with title and description if any.