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I have to code a widget displaying a table on a touch screen and I'm wondering what is commonly used to do so? I thought about holding click down between two rows to insert and holding click down on a row to remove it, just like this:

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Since it's my first time in the touch screen world, how can I make it intuitive and help the user to "guess" the way he can insert and remove? Because on a regular computer I'd pop some kind of tooltip, if the key stops to move, but touch screens are different because finger is not held when moving.

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  • Gestures are available, but it requires a method to pass on that knowledge to your user, do you have a specific use case for this or is it just a general question? Apr 18, 2019 at 11:00

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Couple of solutions, obviously there's no indication of the space and the user base you're working to. Left screen shows a gesture only type scenario, 2nd and 3rd screens show button based versions.

enter image description here

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  • It is for workers in industry, they can add a tool and specify how damaged it is ; so basically my main concern is about effectiveness, it has to be very intuitive for someone not specially familiar with machines and often hurried Apr 18, 2019 at 11:36
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Assuming a person in front of an empty table will want to add stuff into it (even more likely if this person got in front of this table on purpose), I think a worker will try to hold his finger on the screen and then I can display a circle menu strip, up to insert above, down to insert below, and something else to remove!

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