Scrolling via touchpad doesn't work

[borekb]

Dell XPS 13 with "precision touchpad" and Windows 10: when I scroll over the left or right pane with two finger gesture, BC 4.1 does not scroll. Neither in text comparison, nor in folder view.

BC Version 4.1.5 (build 21031)
Latest Windows 10 x64

[Aaron]

Hello,

Thanks for the report. Testing on a Win7 laptop, the two finger scrolling works as expected. I'll update to Win10 to see if this helps reproduce the issue. In the meantime, are there any driver updates available for your laptop? They might also help resolve the issue.

[borekb]

Hi Aaron, I'm on the latest drivers and scrolling works everywhere except BC4.

[Aaron]

Hello,

I've updated one of our laptops to Windows 10, and BC 4.1.5's Text Compare scrolls with two fingers on this machine. Does Notepad and Chrome or Internet Explorer scroll on your system but not BC4? Have there been any driver or firmware updates for your Dell since the original report?

[borekb]

Do you have a laptop with "Precision Touchpad" or not? I do, and it's still the same – all the apps scroll fine (tried Notepad, IE, Firefox, Chrome, Word and cmder) and BC4 doesn't. I've tried both folder compare and text compare (text compare is the primary use case for me), and also tried toggling Edit mode on or off. Still the same, BC4 doesn't scroll.

[Aaron]

No, our test machines in office are either generally MacBooks or Lenovo laptops, which do not exhibit the issue. We're a smaller office and do not have a wide selection of the newest hardware. Some of us personally own laptops at home (although none are Dell with Precision Touch), which we'll use to broaden our test case this week. So far, we have not seen the issue replicate or had other reports of this behavior.

[borekb]

Do you perhaps use some text edit component that is found in other Windows programs that I could try?

[Aaron]

Hello,

Beyond Compare 4 is written in Delphi. You could try another delphi-based Text editor, such as Editpad Lite. There's no guarantee they process their text and scrolling identically, but if you wanted to try a trial of another, similar software it may be a useful test:
http://www.editpadlite.com/

[girishp]

I have a Surface Pro 4 (which has the similar precision touchpad). Scrolling doesn't work in BC4. Scroll with two fingers works fine on all other apps (office, firefox, chrome, notepad, command prompt, gvim, etc.).

[Aaron]

Hello,

Thanks for that info. We should be able to get a Surface in the office for testing, and hopefully it will reproduce the issue.

[borekb]

I've just tried EditPadLite and it worked fine, so it's really Beyond Compare-specific. I've got one more observation / idea: two-finger scroll seems to attempt something on the scrollbars - they briefly flicker. It almost seems as if BC4 attempted to scroll but the sensitivity was not set correctly, or something like that. When I tried "crazily scrolling" (moving two fingers up and down randomly & very quickly), BC4 eventually "scrolled" (jumped to lower part of the editor). It's very hard to replicate so again, my best guess would be that the sensitivity is somehow not right.

[Aaron]

We may have tracked this down and are working on a fix. This won't likely make it into 4.1.6 but should be in a following release.

[LonelyPixel]

Same here. BC won't scroll with two fingers on the Type Cover touch pad of a Surface Pro 4. Notepad++ and everything else does scroll. Using the mouse wheel also works in BC. Windows 10.1607 x64.

[Aaron]

We have an update to this behavior for Precision Touchpads that will be available in the next release of BC4.