livescribe desktop hangs tranfer penlet info

LIVESCRIBE DESKTOP HANGS TRANFER PENLET INFO HOW TO

Note: You may have events other than just pen up, pen down, double tap etc such as timers going off, or controls being tapped etc. But it captures the same information as the diagram. (Normally there is some action you want to have occur plus the new state to go to.) The advantage of this approach is it makes you think about what to do for every event that can occur in every state that exists. For each state you work out what you want to have happen for each column. on double-tap).Īnother way of thinking about it is to write a big table where you have a column for each event type you are interested in, and a row for each state your application can be in. You end up with lots of states circles and ways to move from one state to another (arrows between circles where you write on the arrow when the arrow should be followed – e.g. There will be an initial state, then maybe a state for drawing a control on a page where double tap completes the control drawing and moves the app on to another state.

That is, draw a diagram with every single state your application can be in. I find that, as with most event based models, a state machine is a good way to go. So how do you write the code? Do you display a prompt, wait for input, display the next prompt, wait for input again? Yes, but not as sequential code.īottom line is you don’t wait for input – you react to events then return, remembering the state you were in so when the next event occurs you know where you were up to. The penlet might display a first label (with a verbal prompt as well if you are being fancy), wait for input until the user pauses say for a second or two or does a double tap, then displays the next prompt. (The following post is a massaged version of this thread on the forums.)Ĭonsider a simple penlet where you want to ask the user to write some buttons on a page that they can tap on later. The answer is Penlets don’t wait for more input – they react to events.

LIVESCRIBE DESKTOP HANGS TRANFER PENLET INFO HOW TO

A common question that comes up on the forum is how to wait for user input.

Livescribe desktop hangs tranfer penlet info