NT8 "_screenWidth_" session value will contain zero after session delete

[Rob Kolanko]

Hi Bruce,
I see that in NT8, you revised the "getscreensize" JavaScript  to be more efficient by only updating the session value on server when the screen size has changed. Unfortunately, I (and I suspect others) have a problem with the new script because I delete the session after the user logs out which includes the _screenWidth_ session value. Thus when the user logs in again the _screenWidth_ session value contains zero because the “getscreensize” function does not know that the server session value was erased.  I use the _screenWidth_ session value to set the number of columns of my text box controls to fit my web pages.
For me, I solved the issue by clearing the JavaScript session storage on my log in web page which will trigger the "getscreensize" JavaScript  to update the server session variable. I added packet.append('sessionStorage._ScreenWidth_=0;') in the "7 Inside Script" embed. I wanted to let you know, but I am not sure how you can fix this issue generically for everyone and I hope that you keep the efficiency in the script.

Thanks,
Rob Kolanko

[Djordje Radovanovic]

I am using _screenHeight_ for calculating number of display rows in a browse. I found that few month ago it was working well but now mostly return 0. It was useful when it was working now we have fixed rows browse.

Best regards,

Djordje Radovanovic

[Bruce]

Hi Djordje,

the function is still working, but it can be turned off completely in your app. So if it's "mostly returning 0" then I'm guessing someone has turned off the feature in your app.

Your issue is unrelated to Rob's I think.

cheers
Bruce

[Bruce]

Rob,

I've tweaked 8.33 so that you can force it to update by using

p_web.script('getScreenSize(true)')

you'd put this in after the call to p_web.SetSessionLoggedIn(0).

cheers
Bruce

[Rob Kolanko]

Hi Djordje,

I think you may have the same problem, because you say "mostly return 0", which also can mean that it sometimes does work. Here is how to test. Start your browser fresh, not a new tab, but a cold start. Then connect to your web server program and log in. If your browse size does change (_screenHeight_ is returning a value), next log out and log back in and your browser size is not working  (_screenHeight_ is returns 0) then you have the same problem as me. You will have to add the code in Bruce's post.

Rob

[Djordje Radovanovic]

Hi Bruce,

not one application. All applications have same problem. I do not know how to turn it on or off. I did not know that it is possible.

Best regards,

Djordje Radovanovic