How does a draggable crosshair work in Process Explorer?

Sysinternal Process Explorer has a feature that allows you to drag a crosshair from an application to a control in any other application that you launch and select the specified control.

Does anyone know how this was achieved or is there a .NET / C ++ library that can be reused?

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Using the Win32 API

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Source: https://habr.com/ru/post/1705868/


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