布局背景设置为幻灯片背景
这种方法没有任何参数
builder.CreateFile("pptx")!varoPresentation=api.GetpresentationvaroSlide=oPresentation.getSlideByIndex0varomasterssservations.GetMasters0VaroLayotsevaroFinll =api.CreateSolidFilloLayout.SetBackground(oFill)!oSlide.FollowLayoutBackground()!builder.SaveFile("pptx", "FollowLayoutBackground.pptx")!builder.CloseFile();