delphi TeeChart保存3种图片文件

var
vForm: Tfrm_ChemaShowMainChild;
begin
vForm := GetActiveForm;
vForm.cht_Edit.SaveToMetafile('C:1111.wmf');
vForm.cht_Edit.SaveToMetafileEnh('C:2222.emf');
// // SaveChemaFile;
vForm.cht_Edit.SaveToBitmapFile('C:333.bmp');