Mouse detection not working on Windows 10

[erksmaas]

I switched our website to use smartmenus, using a mac laptop for the development. Everything worked great, except when I tried to use the menus on a Windows 10 PC – the menus do not expand when doing a mouse over. (They do not expand for me even on the menus on http://www.smartmenus.org). I primarily was using Chrome on both mac and PC but the problem was the same on other browsers. I dug in the code, and was able to fix the issue in the mouse detection function. When I change the line:

if ((deltaX > 0 || deltaY > 0) && deltaX <= 2 && deltaY <= 2 && thisMove.timeStamp – lastMove.timeStamp <= 300) {

to be:

if ((deltaX > 0 || deltaY > 0) && deltaX <= 3 && deltaY <= 3 && thisMove.timeStamp – lastMove.timeStamp <= 300) {

(increasing the deltaX, deltaY <= from 2 to 3)

then the problem is resolved on my PC.

[admin]

Hmm, that’s the first time I hear about such an issue. 😕 I haven’t personally experienced it and wonder whether it might be caused by some kind driver or hardware issue on your machine (video card/mouse) because it means that when the mouse cursor is moved its reported position is only refreshed for more than 2 pixels distance. Now that I think of it, it might also be some kind of battery saver feature activated on a laptop which lowers display refresh rate or something like that.

Apart from that, increasing the delta check to 3px is not a problem I believe – it should just be kept low enough since this is a workaround for an issue I once noticed on touch screen Windows devices.

Anyway, I will try to reproduce it in some way but could you please share some details about the PC/laptop you are testing on (brand, video card, etc..)? Thanks!

[erksmaas]

It’s actually an old Dell desktop, Precision T3500 with several monitors attached. Video card is PNY NVIDIA NVS 510.

[admin]

OK, thanks for the info!

[Author]

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