It is also possible to make use of the [GetProp](https://msdn.microsoft.com/en-us/library/windows/desktop/ms633564%28v=vs.85%29.aspx) / [SetProp](https://msdn.microsoft.com/en-us/library/windows/desktop/ms633568%28v=vs.85%29.aspx) api calls, which make use of [integer atoms](https://msdn.microsoft.com/en-us/library/windows/desktop/ms649053%28v=vs.85%29.aspx#_win32_Integer_Atoms) - which is faster than [GetProp](https://msdn.microsoft.com/en-us/library/windows/desktop/ms633564%28v=vs.85%29.aspx) / [SetProp](https://msdn.microsoft.com/en-us/library/windows/desktop/ms633568%28v=vs.85%29.aspx) with a [string atoms](https://msdn.microsoft.com/en-us/library/windows/desktop/ms649053%28v=vs.85%29.aspx#_win32_String_Atoms), but use of [GetProp](https://msdn.microsoft.com/en-us/library/windows/desktop/ms633564%28v=vs.85%29.aspx) / [SetProp](https://msdn.microsoft.com/en-us/library/windows/desktop/ms633568%28v=vs.85%29.aspx) with both atoms types are still slower than [GetWindowLong](https://msdn.microsoft.com/en-us/library/windows/desktop/ms633584%28v=vs.85%29.aspx) / [SetWindowLong](https://msdn.microsoft.com/en-us/library/windows/desktop/ms633591%28v=vs.85%29.aspx) as far as I am aware.
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