DisplayMapper V1.9.0

What's New

In-app Primary Monitor Selection | Fixed
You can now set your primary monitor directly from DisplayMapper — no need to open Windows Display Settings. Select any monitor on the canvas and click Set as Primary. The layout is applied immediately.

Startup Agent Now Restores Primary Monitor
The startup agent already corrected monitor positions on login or wake — it now also restores your saved primary monitor. If another application or Windows itself changes your primary display, DisplayMapper will quickly correct it on the next startup or resume.

Monitor Model Names on Canvas
Monitor cards now display the actual model name (e.g. ASUS VG249Q1A, LG 27UK850) instead of the generic device identifier.

Flexible Monitor Alignment
Secondary monitors can now be positioned at any point along the left or right edge of your primary monitor.

Improved Drag Sensitivity
Canvas drag-and-drop has been tuned for more precise monitor positioning. Snapping behavior is more predictable, especially when working with monitors of different resolutions.

Bug Fixes

• Fixed ChangeDisplaySettingsExW returning code -1 when changing the primary monitor, caused by incorrect coordinate normalization during primary hand-off.