Returns a window using its index or its name from the Windows collection.
Parameters:
iIndex
The index or the name of the window to retrieve from
the collection of windows.
As a numerics, this index is the rank of the window
in the collection.
The index of the first window in the collection is 1, and
the index of the last window is Count.
As a string, it is the name you assigned to the window using
the