Hello, there are three ways to implement this feature
1.Use this tool to stretch vector surfaces to generate a 3D cache [3Ddata]-[Model cache generated by region stretch]
2. Use this tool to stretch and generate 3D model data from the opposite side [3D Designer]-[Extrude]-[Linear Extrude]
3. Create a new scene, add the shp to the new scene, and modify the style parameter new scene-[style]-[Altitude Mode]-[Extrude Altitude]
You can use any version of iDesktop or iDesktopX in 11i to implement it.
I hope it's helpful to you.