[Interest] Is it possible to override dll in runtime in Qt?

[Thiago Macieira]

Em qua 09 abr 2014, às 06:52:01, Vincent Cai escreveu:
>                With your method below, can I load A/Prmt.dll then unload
> A/Prmt.dll and then load B/Prmt.dll in runtime without restarting
> Application?

Not a good idea. Unloading plugins is not recommended. Simply restart the 
application if you need to change plugins.

Also, QPluginLoader needs to load something that is a Qt plugin. A generic DLL 
does not qualify. You'd need to use QLibrary directly or, better yet, Win32 
LoadLibrary.

> BTW, Core.dll is dependent on Prmt.dll, how can Core.dll know
> access symbols in Prmt.dll after changing Prmt.dll?

You have to unload Core.dll too. Hence, please use LoadLibrary for both DLLs 
and unload them both when you're done.

And cross your fingers.

-- 
Thiago Macieira - thiago.macieira (AT) intel.com
  Software Architect - Intel Open Source Technology Center