Darrel,

> I have a project that downloads and unzips a 3GB file. The download
> takes hours. I am using 7-Zip with Run Program to unzip, this takes a
> long time also. Once unzipped, I move the 8 files (80 GB) from folder
> A to folder B, again takes a lot of time. During the donwload, the run
> program, and the move process, can I enable the "Cancel" button so the
> customer can stop if needed, or how do I allow the customer to stop the
> process?

The standard disabled "Cancel" button on the Progress Bar dialog tells the
user that it is not possible to "abort" the currently running installation
process.

For example, if you wait for a running program (7-Zip) then you can't stop
such a process (because the "wait" operation causes the installer to be
suspended until the external program has finished).

Friedrich