Abort

Checks to see if the user has requested to abort the current operation.

Cancel

Forces an abort to ocurr with Cancel as reason.

End

End the current progress step.

QueueAlert

Queue an alert to display.

Retry

Forces an abort to ocurr with Retry as reason.

SetStatus

Set the status bar for the current progress step.

Start

Create a new progress step with the given number of sub-steps.