Release 10.1A: OpenEdge Development:
ADM Reference

confirmContinue

Asks all data-targets whether they have changes pending.

Location: query.p

Parameters:

INPUT-OUTPUT pioCancel AS LOGICAL

Returns TRUE if any data-target reports a pending change.

Returns: LOGICAL

Notes:

If any data-target reports a pending change, this routine returns pioCancel = TRUE to its caller. The caller then must handle the discrepancy, typically by reporting the unsaved changes to the user and requesting disposition instructions (Save, Discard, etc.).
This method should be called from any method that might change the result set somewhere in the data-source chain like openQuery or navigation actions. Currently called from the filter-source to see if new criteria can be applied. (Currently the Navigation actions are disabled whenever a state that might disallow continuation is set to TRUE, but if a less modal dialog could be achieved by calling this from one of the fetch methods.)