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Touch screens and scroll bar/drop box behaviour

Touch screens and scroll bar/drop box behaviour

Touch screens and scroll bar/drop box behaviour

(OP)
Good morning

I have discovered an interesting issue with touch screens
Sometimes native VFP controls like drop boxes and scroll bars do not work as expected or at all with a touch screen.
I can reproduce the issue as follows:

If the windows device has a mouse or touch pad active or connected when the VFP application launches, the controls work as expected when using touch screen.
If the mouse is then unplugged while the VFP application is running, the control behaviour continues as normal with touch control.

If the mouse is already removed (Only touch screen control available) when the VFP application launches, then VFP scrollbars and drop boxes do not operate correctly.
(Unable to move the slider in scroll bar, unable to make a selection in the drop box)

This is tested on windows 8.1 on 2 quite different machines. (HP Laptop with touchscreen running i7 and Dell tablet running Intel Atom)

I am wondering if anyone else has experienced this and found a setting in VFP or otherwise that overcome this shortcoming

Alastair

Update:
I have tested this also in Windows 10 with the same result. The issue is not restricted to touch screens. I reproduced the issue on a Windows 10 machine using teamviewer with the mouse disconnected in the remote machine.
What is needed is a way to trick VFP into thinking it has a mouse connected.

Update:
I have resolved the issue. It is rather simple. It is a windows setting - Ease of Access: Turn on mouse keys. Now VFP behaves as normal

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