I can't find any documentation on the CList object sort mode parameter of the Sort method. Could someone please explain how I use it.
Thanks in advance.
It is your code, where you derive from CObject and override the Compare method, determines what the mode parameter means.
If you only have one value to sort by, then you use positive/negative to determine the sorting direction.
If you have multiple possible values use the mode value to select which field and the sign the direction.
Etc. It is up to you.