CopyFiles vs ProgressBar

[dnafigator]

I want to create an installer, wich allows to leave some files on the media (CD).
To do it, I simply copy optional files near the 'setup.exe'
(*****, Video\*.avi) and copy them via CopyFiles command.

But.

While using non-silent mode, additional dialog appears and bothers USER (but shows copy progress!)
In silent mode, on the contrary, there is no any dialog, but the copy progress also stops somewhere (*****. at 100%)
USER might think, that installer is dead and try to kill application, interrupting copy process.

How do I use the same copy indicator for optional files?
It's the same for me whether the percentage will continue to grow (*****. 1%-80% normal intall progress, 81%-100% additional files)
or it will reset to zero, change caption to something like "copying video files" and show the actual copy progress.

Thaks in advance.

[kichik]

To hide the CopyFiles dialog, use the /SILENT switch.