#13 Win32 Setup-Entropy Input Screen not intuitive for the user.

[Tony M]

When presented with the entropy generation dialog the
user does not get any feedback on the process and may
think that the program has locked up or something.

The problem is because the entropy only gets input
when the mouse moves over the dialog which is about
120x300.

Solution - Subclass the window message for
WM_MOUSEMOVE and / or make the dialog larger
(screen size)