CenterDrawing Method [Visio 2003 SDK Documentation]
Centers a page's, master's, or group's shapes with respect to the extent of the page, master, or group.
object**.CenterDrawing**
object Required. An expression that returns a Page, Master, or Shape object that contains the shapes to center.
Version added
4.0
Remarks
Centering shapes does not change their position relative to each other.
Applies to | Master object | Page object | Shape object | Shapes collection