Previewing Window theme changes in MFC application

[MarigoldR]

Hi,

I have a 64 bit MFC application and I need to change the theme of the application (eg Aero/ High Contrast dark theme etc)? How do I load the theme data files from "C:\Windows\Resources\Ease of Access Themes" and use them to only preview a specific window or a control? I have tried SetWindowTheme() API [no effect], ::_tsystem() API [gets applied to the whole system without a preview]

Thanks

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