[Qt-interest] Problem with Windows distribution of plugins using CRT DLL

[David Ching]

Hello,

Has Qt Software considered the ramifications of needing to place plugin 
DLL's into e.g. the imageformats\ and accessible\ subfolders?  This creates 
a deployment issue under Windows.  In a Windows "app local" deployment, the 
CRT DLLs are put either into the .exe folder, or into a subfolder called 
e.g. Microsoft.VC80.CRT.  This lets the .exe (and any DLL's in the same 
folder as the .exe) use the CRT DLLs without having to install them globally 
onto the user's computer.

But it doesn't work for the DLL's in the plugins folders such as 
imageformats\ and accessible\ as these DLL's are in a different folder than 
the .exe so they don't find the CRT DLL's and thus won't be loaded unless 
the user's computer has those same DLL's stored globally (which the app 
cannot guarantee).

The only workaround I've found is to also put the CRT DLL's into each plugin 
folder, but that is a waste and may cause 2 instances of the DLLs - one from 
the .exe folder, and another from the plugin folder.  Perhaps the plugin 
DLL's could be moved into the .exe folder with a naming system, such as 
imageformat_*, accessible_*.

What do you think about that?

Thanks,
David