Edge-scroll for Windows precision touchpads — swipe along the right or bottom edge with one finger to scroll, just like on a trackpad in Ubuntu with the edge scroll turned on.
Why? Windows only supports edge scrolling for legacy (non-precision) touchpads via a driver shim. Modern precision touchpads expose a raw HID interface with no built-in edge-scroll support. ScrollStrip fills that gap without touching driver settings.
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- Right-edge vertical scroll — drag one finger along the right edge to scroll up/down
- Bottom-edge horizontal scroll — drag along the bottom edge to scroll left/right
- Momentum / inertia — flick and the page keeps coasting; adjustable strength (1–10)
- Adjustable edge zones — configure how wide/tall each trigger zone is (5–30 % of the touchpad)
- Per-axis speed multiplier — independent speed control for vertical and horizontal
- Invert scroll direction — per axis
- Cursor lock — optionally locks the pointer in place while scrolling so it doesn't drift
- Run at startup — registers itself in
HKCU\...\Runon request - Lives in the system tray — no taskbar entry, double-click or right-click → Settings to configure
| Requirement | Details |
|---|---|
| OS | Windows 10 (1903+) or Windows 11 |
| Touchpad | Any precision touchpad (HID Digitizer, Usage Page 0x0D / Usage 0x05) |
| Runtime | .NET 8 Desktop Runtime — only needed for the framework-dependent build |
Check if your touchpad is a precision touchpad: Settings → Bluetooth & devices → Touchpad. If you see "Your PC has a precision touchpad" it's supported.
- Download
ScrollStrip.exefrom the Releases page. - Run it — a small icon appears in the system tray.
- Right-click the tray icon → Settings to configure.
ScrollStrip needs no installation and writes no registry keys except the optional run-at-startup entry.
git clone https://github.com/tasos14/ScrollStrip.git
cd ScrollStrip
dotnet run
To produce a self-contained single-file executable:
dotnet publish -c Release -r win-x64 --self-contained ^
-p:PublishSingleFile=true ^
-p:IncludeNativeLibrariesForSelfExtract=true
The output lands in bin\Release\net8.0-windows\win-x64\publish\ScrollStrip.exe.
| Action | Result |
|---|---|
| One finger on the right edge, drag up/down | Vertical scroll |
| One finger on the bottom edge, drag left/right | Horizontal scroll |
| Flick and lift | Inertia coast |
| Touch during inertia coast | Stops inertia |
| Two fingers anywhere | Passthrough — normal two-finger gesture, no interference |
| Double-click tray icon | Opens Settings |
| Right-click tray icon → Quit | Exits |
Taps in the edge zone are intentionally ignored — a deliberate scroll gesture must travel at least ~2 mm before any scroll event is sent.
All settings are saved automatically to %AppData%\ScrollStrip\settings.json.
| Setting | Default | Description |
|---|---|---|
| Enable edge scrolling | ✓ | Master on/off switch |
| Smooth scrolling (inertia) | ✓ | Momentum after lifting the finger |
| Inertia strength | 5 | 1 (snappy, ~600 ms) → 10 (long coast, ~5 s) |
| Lock cursor while scrolling | ✓ | Prevents the pointer drifting as you drag the edge |
| Run at Windows startup | ✗ | Adds/removes a registry entry under HKCU\...\Run |
ScrollStrip creates a hidden message-only window and registers for Raw Input (WM_INPUT) on the precision touchpad HID device (Usage Page 0x0D, Usage 0x05). It never intercepts normal input — two-finger gestures, taps, and clicks all reach Windows as usual.
Each raw report is parsed using the Windows HID preparsed-data API (HidP_GetValueCaps, HidP_GetUsageValue, HidP_GetUsages) to extract per-finger contact IDs, normalised X/Y coordinates, and tip-switch state — without ever opening the device file.
When a single finger lands inside a configured edge zone, ScrollStrip tracks its movement and synthesises scroll events via SendInput (MOUSEEVENTF_WHEEL / MOUSEEVENTF_HWHEEL). Scroll amounts are sent as proportional integers each HID event, giving smooth sub-notch scrolling that works in every modern app.
On finger lift, a 100 ms velocity buffer produces a launch velocity. A 16 ms timer then applies exponential decay to coast the page to a stop, mimicking the feel of native two-finger inertia.
Two edge cases are explicitly handled:
- Phantom multi-touch — precision touchpad hardware briefly reports a second finger contact within ~20 ms of lift. A 50 ms grace period prevents these from cancelling freshly started inertia.
- Tap suppression — a tap in the edge zone produces tiny HID deltas. Scrolling only begins after cumulative finger travel exceeds 2 % of the touchpad (≈ 2 mm), so taps are silently ignored.