The bigger Window ID

[Archimede]

Hallo.
What is the bigger Window ID possible?

[kunkel321]

What do you mean? Do you want to identify whether a window is maximized?

[Archimede]

I would like to know what is the much big number theoretically possible of a Window ID.

[just me]

Is this related to Array with arbitrary index? If so, why do you open a new thread?

[Seven0528]

　In DllCall and similar functions, hWnd is treated as a Ptr, which means it is processed as an Int on 32-bit systems and an Int64 on 64-bit systems.
From a purely numerical perspective, the range of hWnd values would be as follows:

• 32-bit: -2147483648 to 2147483647
• 64-bit: -9223372036854775808 to 9223372036854775807

However, it is important to remember that for handle values like hWnd, only the lower 32 bits are significant or valid.
This is due to interoperability between 32-bit and 64-bit systems.
Re: Gui control hwnds larger than 0x7FFFFFFFFFFFFFFF