WPROGRESSDIALOG-SET-PROGRESS (op-code 3)

This operation updates the progress dialog box with the current state of the work being monitored. It takes three parameters:

handle The handle of the progress dialog returned by WPROGRESSDIALOG-CREATE.
completed     A numeric literal or data item specifying an application-defined value that indicates what proportion of the work has been completed so far.
total A numeric literal or data item specifying an application-defined value that specifies what value the 'completed' parameter will have when the work is complete.