Maximum number of keys.

Hello

I would like to know if there is a way to check the maximum number of keys (for example with something similar to screen_get_event_property_iv) on the device.

In addition,

screen_get_event_property_iv (screen_event, SCREEN_PROPERTY_TOUCH_ID, &id);)

allows me to get the ID of the current ID. What is an ID that corresponds to the touch (so, if there is for example 10 keys, id will be between 0 and 9) or does it continue to grow? (for example, whenever a new finger noise inside, id increases, and it could go up to any value, as long as the new keys keep coming).

My tests, it appears the id doesn't grow, only for sticks for the same set of values and BB Playbook only supports up to 4 simultaneous keys, but I would like to be able to query the number of keys, however.

If anyone has answers, I'll be very grateful.

See you soon,.

Jaime

A great question!

It was 4 on PlayBook and can be > 4 on new devices.  Design for 4 would be a good idea for now since you want your application to be usable on all devices.

I submit this request for the people of libscreen along, because they already know internally what is the max #... It is simply not exposed in any convenient way.  In General, and that the API rule evolve, we want to be able to put as much information in the hands of the developer as possible.

That being said, nothing can stop your application multitouch great to do something similar to what we see with the calibration of analog joystick... have your app in advance with a "number of fingers on the screen you can press on ' message and sample the max for yourself until a SCREEN_PROPERTY_MAX_MTOUCH practice or similar is available.

See you soon,.

Sean

Tags: BlackBerry Developers

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