… = Window[…] (gb.qt4)

Dim hWindow As Window
Dim hControl As Control
hControl = hWindow [ Name As String ]

Returns an Object representing a control located in the window from its name.

In order to use the actual control properties in your code you must assign the return to a Control object (or a specific control type) per the syntax above.

The IDE and IDE debugger "hide" the fact that the returned item is an Object by converting the object to a Control. This can cause confusion.