设置当前幻灯片布局背景
| 名称 | 类型 | 描述性 |
| OAPIFILLLL | apiFill | 颜色或模式填充幻灯片布局后台 |
builder.CreateFile("pptx")!varoPresentation=api.GetpresentationvaroSlide=oPresentation.getSlideByIndex0varomasterssservations.GetMasters0VaroLayotseVar OGs1 = Api.CreateGradientStopVar OGS2 = Api.CreateGradient StopvaroFinll =api.CriateRadialGratientFilloLayout.SetBackground(oFill)!oSlide.FollowLayoutBackground()!builder.SaveFile("pptx", "SetBackground.pptx")!builder.CloseFile();