Release Highlights

Aspose.Tasks for C++ 25.4 for Windows delivers precise control over Gantt chart legend bars, improved calendar-based duration calculations, and customizable timescale fitting. Also resolves critical issues in Primavera P6 XML export and TaskUsage rendering for Microsoft Project compatibility.

New Features

• Custom Gantt Legend Bars: Use LegendItems to define specific bar types in PDF or image exports.
• ICalendar Interface: Perform date/time calculations based on merged resource-task calendars.
• Timescale Fit Behavior: Align timescale rendering with new TimescaleFitBehavior enum.
• Legend API: New PageLegendItem type for enhanced legend bar labeling.

Enhancement

• Support for end-of-page timescale control using TimescaleFitBehavior.
• Calendar intersection for precise working hours via Calendar.GetIntersectionCalendar.
• Cancellation tokens now supported in LoadOptions and LevelingOptions.

Fix

• Primavera P6 XML exports now import correctly.
• Summary task assignment export fixed for Primavera formats.
• Resolved rendering errors for TaskUsage views and final timescale page areas.
• Addressed manual/auto task scheduling inconsistency.

Public API Additions

• Types: ICalendar, PageLegendItem
• Methods: Calendar intersection, working time calculations, Gantt legend controls
• Properties: SaveOptions.LegendItems, SaveOptions.TimescaleFitBehavior
• Enums: TimescaleFitBehavior additions for end alignment control

👉 Full list of changes: Aspose.Tasks for C++ 25.4 Release Notes

Gantt legend bar | calendar working time C++ | timescale stretch | Primavera P6 export