清除滑动后台
这种方法没有任何参数
builder.CreateFile("pptx")!varoPresentation=api.GetpresentationvaroSlide=oPresentation.getSlideByIndex0Var OGs1 = Api.CreateGradientStopVar OGS2 = Api.CreateGradient StopvaroFinll =api.CriateRadialGratientFilloSlide.SetBackground(oFill)!var重复滑动=o滑动.oDuplicateSlide.ClearBackground()!builder.SaveFile("pptx", "ClearBackground.pptx")!builder.CloseFile();