Selection.ContainingMasterID property (Visio)
Returns the ID of the Master object that contains an object. Read-only.
Syntax
expression. ContainingMasterID
expression A variable that represents a Selection object.
Return value
Long
Remarks
If the object is not in a Master object, the ContainingMasterID property returns -1. For example, if a Shape object belongs to the Shapes collection of a Page object, the ContainingMasterID property returns -1.
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