[Interest] Customized Qt Platform Abstraction plugin

[Philippe]

There is little documentation about Qpa, however I am wondering if a custom Qpa plugin could be used for the followin scenario:

* there is a big desktop application A that does not use Qt, and that uses its own xplatform framework.
* there is smaller application B, that is based on Qt widgets
* the goal is to embed B inside A. Both applications are from the same company, with possibily to make changes in both (but A must not be rewritten for Qt, and B must remain based on Qt)

I am just asking: how crazy or wise, possible or not, is the idea to
create a QPA plugin, representing the "platform A", to host B ?

IOW, mouse/key/window support is provided by A, and used by B

Philippe