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'''on.charIn''' is an event that catches the user's keypresses on the keyboard.
Here's an example on how to use it :
<syntaxhighlight>
input = "" -- the string that will contain the user's typed message
function on.paint(gc)
gc:drawString(input,5,5,"top") -- drawing the current string on screen
end
function on.charIn(char)
if string.len(input) >= 25 then -- Here, we set a 25 chars limit
input = input..char -- appending
platform.window:invalidate() -- refreshing the screen
end
end
function on.backspaceKey()
input = string.usub(input,0,string.len(input)-1) -- deleting the last char (with unicode support)
platform.window:invalidate() -- refreshing the screen
end
</syntaxhighlight>
You can here find a more detailed tutorial on how to use it to create a text input function :
http://www.inspired-lua.org/2011/12/how-to-have-a-nice-little-input-function-in-lua/
[[Category:Events]]
[[Category:Events]]
