Foxpro Tablet dropdown issue

[timdobie]

Hi,
just wondering if anyone else has encountered this issue and has a solution.

On 2 different tablets a Lenovo and a Toshiba (both 8inch) (both running Windows8) my application will not register a selection from a dropdown box.
That is to say that the dropdown initializes OK and you can use the dropdown arrow to make the options appear but when I select an option the dropdown retracts as expected but the field is blank.

I was initially thinking 'programming error' BUT running the program on several Lenovo 10inch tablets running Windows8 the application works fine.
Any thoughts on this strange behaviour?

cheers,
Tim

 

[Olaf Doschke]

Is it just a visual issue? Is the combobox.value ok but does not display? I would investigate in that direction, as the form factor seems the only difference, it might have to do with resizing, changing font sizes, anything with control heights, font sizes...

Bye, Olaf.

 

[craigber]

Could be a difference in the drivers or even video processors. VFP controls are not real Windows controls, they are basically images drawn on the form.

Craig Berntson
MCSD, Visual C# MVP,

http://www.craigberntson.com/blog

 

[timdobie]

clarification of some misinformation in my initial post:
If I initialize the combo with a particular value that value remains unchanged when you select a new value from the dropdown.
In my original post I mistakenly said that the initial value was blanked out. this is not in fact the case.
The initial value actually remains unchanged regard of what you select from the dropdown.

Olaf,
I've checked out the combobox.value property and it is also not changing on selection.

As for fonts sizes etc. Some of the combos in question have these properties set in the form designer at design time and some have them being changes at runtime during various init sequences. All combos are behaving in the same manner suggesting font sizes and resizing are probably no the issue

Craig,
I have since found that the OS on the smaller tablets is Win 8.1 where as the larger tablets have Win 8 on them.
I am in the process of checking out whether this may be causing an issue (btw I have VFP 9 SP2).
Not sure about drivers or video processing perhaps i should try installing older drivers or something and see if it has any effect?

Thanks so much for you suggestions
Any other thoughts?

Tim

 

[NasibKalsi]

Try a small test program with just one ComboBox with static values, as you explained all combobox on this tablette behave the same way.


Nasib