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== Example ==
== Example ==
This example will display on the top-left corner of the screen a number going from 0 to infinity (it never stops), by adding 1 to ''variable'' every 0.5 seconds.
<source>
<source>
variable = 0
variable = 0
function on.timer()
function on.timer()
timer.stop()
timer.stop() -- stops the current timer. Not necessary.
variable = variable + 1
variable = variable + 1
platform.window:invalidate()
platform.window:invalidate() -- screen refresh (on.paint is called)
end
end
function on.paint(gc)
function on.paint(gc)
timer.start(0.5)
timer.start(0.5) -- will fire the on.timer event every half second.
gc:drawString(variable,0,0,"top")
gc:drawString(variable,0,0,"top") -- display the number
end</source>
end</source>
