Use the distribution, sample count and dropouts together; a single peak is not the result.
IP-MSE-01 / MOVE / 5 BUTTONS / WHEEL
Mouse Drag Continuity Test
Check whether a held primary button remains active through continuous pointer movement.
Dragging files, sliders or selection boxes releases unexpectedly.
This focused entry uses the shared Mouse protocol. The measurement logic and Evidence version remain identical to the complete lab.
Remove the easiest false alarms first.
01
Use a desktop browser, keep the tab visible and close high-load tabs.
02
Move continuously on a stable surface; do not compare a slow trace with a fast trace.
03
Keep the same browser, Pointer API and connection path for repeat comparisons.
Run one repeatable protocol.
- 01
Hold the primary button inside the test surface.
- 02
Trace the complete drag path without releasing.
- 03
Review unexpected release or pointer-cancel evidence.
Evidence the result should expose.
DIRECT / INFERREDHeld duration
DIRECT / INFERREDMovement samples
DIRECT / INFERREDUnexpected releases
DIRECT / INFERREDPointer cancel
Separate observed, review and inconclusive.
Repeat under the same motion and load, then compare wired, direct USB and wireless paths one variable at a time.
Browser event rate, click response and pointer capture cannot isolate USB report rate or device-only latency.
Start with the likely path, then retest.
01
Switch contact loss
02
Pointer capture loss
03
Trackpad gesture handling