DPI and Multi-Monitor Management Updates
In this release, we have made improvements in DPI handling and multi-monitor management. Several methods in the DPIScaler class hierarchy have been deprecated, and some functionality has been moved to a new class, DesktopSupport.
Reason for the Change
These updates were implemented to support the complex combinations of multi-monitor configurations, especially those involving high resolutions and different scaling factors. The refactoring, which led to the introduction of the DesktopSupport class, enhances the management of monitors by offloading responsibilities from the DPIScaler class hierarchy.
Action Required
Review your integration to ensure compatibility with these changes and take advantage of the improved multi-monitor support. If you did not reference the classes and methods discussed below, you do not need to take any action.
The DesktopSupport class now manages responsibilities that were previously part of the DPIScaler hierarchy. Update your implementation to use the methods provided by DesktopSupport for managing complex multi-monitor setups with varying resolutions and scaling factors.
If you directly referenced the DPIScaler class or any of its subclasses and used its public methods, you must check whether any of the following changes affect your code and adapt it accordingly.
• DPIScaler>>#activeDisplayArea was deprecated and replaced by DesktopSupport>>#activeMonitorArea.
The following methods and classes were deprecated:
• DPIScalerImpl>>#activeDisplayArea and replaced by DesktopSupport>>#activeMonitorArea.
• DPIScalerWinScaled>>#activeDisplayArea and replaced by DesktopSupport>>#activeMonitorArea.
• DPIScalerWinScaled>>#shellClass
• DPIScalerWinScaled>>translateToActiveDisplay:.
If you directly reference EtWindowBaseSupport or any of its subclasses e.g., EtWindowSupport, you must check whether any of the following changes affect code and adapt it accordingly. In VAST 2024, the following API existed. In VAST 2025, it was removed and replaced as indicated below.
• EtWindowBaseSupport class>>#activeDisplayArea (removed and replaced by DesktopSupport>>#activeMonitorArea)
• EtWindowBaseSupport class>>#activeWindowArea (removed and replaced by DesktopSupport class>>#activeWindowArea (private))
• EtWindowBaseSupport class>>#desiredActiveMonitorPos: (removed and replaced by DesktopBaseSupport class>>#activeMonitorDesiredPos: )
• EtWindowBaseSupport class>>#desiredDisplayCenter: (removed)
• EtWindowBaseSupport class>>#desiredMonitorCenter: (removed and replaced by DesktopBaseSupport class>>#activeMonitorCenter: )
• EtWindowBaseSupport class>>#desiredWindowCenter: (removed)
• EtWindowBaseSupport class>>#shiftStep (removed)
EtWindowSupport has the same methods.
Last modified date: 03/21/2025