How to Tune Hover Sensitivity in Edge-Drop

Edge-Drop's hover trigger is the difference between a shelf that opens when wanted and a shelf that opens every time the cursor brushes the screen edge. The trigger has three knobs: the trigger strip width, the dwell time, and the hover-off close behaviour. This article covers what each knob does, where it lives in the settings panel, and how to combine them for high-DPI displays, multi-monitor layouts, and tablet-style accidental opens. For the multi-monitor side of the same problem, see how to pick which monitor Edge-Drop uses. For the case where tuning is not enough and the user would rather skip hover entirely, see how to turn hover off and use only the hotkey.

What hover sensitivity actually controls

Edge-Drop opens the shelf when the cursor enters a thin strip along the configured edge of the chosen monitor and dwells there for a short period. The trigger is composed of three independent parameters:

• Trigger strip width. The physical width of the hot zone along the screen edge. A wider strip is easier to hit but opens more easily on accidental cursor travel. A narrower strip is harder to hit but rarely opens by accident.
• Dwell time. How long the cursor must remain in the trigger strip before the shelf opens. A shorter dwell feels snappier; a longer dwell filters out cursor transits.
• Hover-off close. Whether the shelf closes when the cursor leaves the shelf, after a grace period. With hover-off on, the shelf auto-closes; with it off, the shelf stays open until explicitly dismissed.

The three combine to produce the "feel" of the shelf. The default values are tuned for a single-monitor, 100% DPI, right-handed user with a bottom taskbar. Anything outside that profile is a candidate for tuning.

Where the controls live

The hover sensitivity controls are split across two tabs in the settings panel:

To open the panel:

1. Click the Edge-Drop tray icon and choose Settings.
2. Or open the shelf with the toggle hotkey (default Alt+C) and click the gear icon.
3. Or right-click the shelf and choose Settings.

For the full settings map, see Edge-Drop settings map: Behaviour, Position, Appearance.

Symptom-to-knob matrix

The fastest way to tune is to match the symptom to the knob:

Start with the symptom that annoys most. Adjust one knob at a time. Most users settle in two or three iterations.

Trigger strip width

The trigger strip is the hot zone along the screen edge. The default is thin — typically a few pixels. The exact width in physical pixels depends on the monitor's DPI scaling; on a 150% scaled monitor, the same logical width covers more physical pixels.

When to widen

• High-DPI monitors. A thin strip on a 4K monitor at 200% scaling may be too thin to register reliably. Widen to the next step.
• Tablet or stylus input. Stylus precision is finer than mouse precision, but stylus users tend to overshoot the edge. A wider strip is more forgiving.
• Trackpad users with imprecise edge travel. Trackpads sometimes stop the cursor a few pixels short of the edge. A wider strip catches the cursor before it stops.

When to narrow

• The shelf opens during normal cursor work. The cursor brushes the edge when aiming for scrollbar arrows, window edge resize handles, or taskbar buttons near the edge. Narrow the strip.
• Multi-monitor side-by-side layout where the chosen edge is the seam. The cursor crosses the seam constantly when moving between monitors. Narrow the strip on the seam side, or move to the other edge.

How to set it

In the Position tab, the Trigger strip width control offers a small set of steps (e.g., Thin / Medium / Wide). Pick the smallest step that reliably triggers when wanted, then back off one step if accidental opens persist.

Dwell time (hover sensitivity)

The dwell time is how long the cursor must remain in the trigger strip before the shelf opens. The default is short — typically a few hundred milliseconds.

When to lengthen

• Accidental opens during cursor transit. The cursor passes through the trigger strip on its way to somewhere else, and the shelf opens. Lengthen the dwell so a transit does not register.
• High-refresh-rate pointers. A 360 Hz mouse can traverse the trigger strip in less time than the default dwell, but the cursor's path through the strip is shorter on a high-refresh display because the cursor moves in smaller physical increments per frame. The interaction is subtle; see high-refresh pointers and hover dwell times for the longer argument.
• Tablet mode with stray touches. A stray touch near the edge should not open the shelf. Lengthen the dwell to filter out short touches. See tablet mode and accidental edge opens.

When to shorten

• The shelf does not open when the cursor is parked at the edge. The user moved the cursor to the edge and waited, but the shelf did not appear. The dwell may be too long for the user's patience; shorten it.
• The shelf opens too slowly for the user's workflow. A short dwell feels snappier. If the user is consistently parking the cursor at the edge and waiting, the dwell is too long.

How to set it

In the Behaviour tab, the Hover sensitivity control offers a small set of steps (e.g., Short / Medium / Long). Start at Short; if accidental opens persist, bump to Medium; if it is still too sensitive, narrow the trigger strip in the Position tab rather than going to Long, because Long can feel laggy.

Hover-off close

Hover-off close controls whether the shelf closes when the cursor leaves. The default is on, with a short grace period (a few hundred milliseconds) to allow the cursor to traverse the gap between the trigger strip and the shelf itself without the shelf closing.

When to turn off

• The shelf closes mid-drag. When the user starts a drag-out and the cursor leaves the shelf briefly, the shelf may close mid-drag and abort the drop. Turn hover-off off; the shelf stays open until dismissed.
• The user keeps the shelf open as a staging area. Some workflows keep the shelf open as a visible tray of recent items. Turn hover-off off; dismiss the shelf with the hotkey or a click on the empty area.

When to leave on

• The shelf should disappear after use. The default behaviour. Leave hover-off on; the grace period handles the gap between trigger strip and shelf.

How to set it

In the Behaviour tab, the Hover-off close toggle is a simple on/off. There is no separate grace-period control; the grace is fixed by the dwell setting.

Alignment and shelf height

Two related controls live in the Position tab:

• Shelf height. How tall the shelf is when open. Default is full monitor height. Can be set to a percentage (e.g., 75%) for a shorter shelf that does not cover the full edge.
• Alignment. Whether the shelf is top-aligned, center-aligned, or bottom-aligned within the available height. Default is center.

These do not affect the trigger, but they affect the visual fit. A shelf that is full height and center-aligned is the default; a shorter shelf top-aligned may fit a workflow where the shelf should stay near the top of the screen.

Tuning recipes

Three common recipes that solve most tuning problems:

Recipe A: the "opens too often" fix

1. Behaviour tab → Hover sensitivity → Medium.
2. Position tab → Trigger strip width → one step narrower.
3. Test for one hour of normal work. If accidental opens persist, repeat step 2.

Recipe B: the "does not open reliably" fix

1. Position tab → Trigger strip width → one step wider.
2. Behaviour tab → Hover sensitivity → Short.
3. Test. If the shelf opens reliably but still accidentally, revert the dwell to default and rely on the wider strip alone.

Recipe C: the "shelf bounces" fix

1. Behaviour tab → Hover-off close → Off.
2. Test the drag-out workflow. If the shelf no longer closes mid-drag, leave hover-off off.
3. If the user prefers hover-off on for normal use, turn it back on and accept the rare mid-drag close; use click-to-paste instead of drag-out for items that do not need positioning. See how to drag an item out of Edge-Drop into any app for the click-vs-drag trade-off.

Fullscreen pairing

Hover sensitivity interacts with fullscreen suppression. When SHQueryUserNotificationState reports a fullscreen game or presentation, Edge-Drop suppresses hover entirely — the shelf does not open regardless of trigger width or dwell. The Suppression toggle is in the Behaviour tab and defaults to on. For the longer treatment, see how to keep Edge-Drop quiet in fullscreen games.

What sensitivity tuning does not fix

Tuning the trigger fixes "opens at the wrong time" problems. It does not fix:

• The shelf opening on the wrong monitor. That is a Position tab Monitor setting, covered in how to pick which monitor Edge-Drop uses.
• The shelf opening on the wrong edge. That is the Position tab Edge setting, covered in how to move the Edge-Drop shelf to the right edge.
• The shelf not opening at all. Check that Hover open is on in the Behaviour tab. If the user has turned hover off entirely, the shelf opens only via the Alt+C hotkey. See how to turn hover off and use only the hotkey.
• A second clipboard manager opening its own popup. Two managers fighting each other is a separate failure mode; see two clipboard managers fighting each other.

When tuning is the wrong answer

If the user has tuned the trigger for an hour and the shelf still opens at the wrong time, the answer is often to abandon hover and use the hotkey only. This is the right answer for:

• Tablet users with frequent stray touches.
• Stylus-first workflows.
• Users who keep the cursor near the screen edge for unrelated reasons (e.g., a custom tool that lives on the edge).

Switch to hotkey-only mode by turning Hover open off in the Behaviour tab. The shelf then opens only when the user presses the configured hotkey (default Alt+C). See how to turn hover off and use only the hotkey for the full guide, and how to change the Edge-Drop toggle hotkey if Alt+C conflicts with another app.

Summary

Edge-Drop's hover trigger has three knobs: trigger strip width, dwell time, and hover-off close. Match the symptom to the knob, adjust one at a time, and test for an hour. Most users settle on a wider strip with a short dwell, or a thin strip with a medium dwell. If tuning does not solve the problem in two iterations, switch to hotkey-only mode. The sensitivity controls do not change capture, history, or drag-out behaviour; they only change when the shelf opens.

Related reading

• How to Turn Hover Off and Use Only the Hotkey
• How to Change the Edge-Drop Toggle Hotkey
• How to Install Edge-Drop on Windows 10 and 11
• What Local-First Software Means for Clipboard Apps

Sources

• Microsoft Learn — Window Styles — WS_EX_NOACTIVATE — the no-activate style that lets the shelf stay open without stealing focus during hover-triggered and click-to-paste workflows
• Microsoft Learn — SHQueryUserNotificationState — the API Edge-Drop uses to suppress hover during fullscreen games and presentations, which overrides the trigger settings
• Microsoft Learn — Per-monitor DPI awareness — documents the per-monitor DPI behaviour that affects the physical width of the trigger strip on high-DPI displays
• Microsoft Learn — TrackMouseEvent — the Win32 mechanism underlying hover and hover-off detection in Windows apps
• Edge-Drop — GitHub README — official source of truth for the Behaviour tab's hover sensitivity controls and the Position tab's trigger strip width

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