ISOBJECT(identifier)

Returns the value True or False depending if the identifier represents an object (Boolean).

identifier

The variable name.

REMARKS

* If the variable has been set to Nothing, then True is returned.
* You should always use error handling to be sure that an object reference is valid.
* This function can be useful to determine if a variant is of the vbObject vartype.
* You can use the ISARRAY function to return True or False depending if the value is an array.
* You can use the ISDATE function to return True or False depending if the value is a date.
* You can use the ISEMPTY function to return True or False depending if the variable has been initialised.
* You can use the ISERROR function to return True or False depending if the value is an error.
* You can use the ISMISSING function to return True or False depending if an optional argument has been passed in.
* You can use the ISNULL function to return True or False depending if the value contains no data.
* For the Microsoft documentation refer to learn.microsoft.com

Dim MyInt As Integer 
Debug.Print IsObject(MyInt)         ' False  

Dim MyObject As Object              ' Declare an object  

Dim MyVariant As Variant 
Debug.Print IsObject(MyVariant)     ' False for Variants that are not initialised  

Set MyVariant = MyObject            ' Assign to an object reference.  
Debug.Print IsObject(MyVariant)     ' True  

Debug.Print IsObject(Nothing)       ' True  
Debug.Print IsObject(Empty)         ' False  
Debug.Print IsObject(Null)          ' False