Passing command to another page

[otterslidestudio@aol.com]

One thing that I have never been able to understand is how to pass a command to a page from an overlay. Any tips on how this is accomplished? For example, if I wanted to use setfillcolor to change the color of an object in in a page from a button in the overlay?

[Yamamoto]

A global variable or dispatching an event to the page will work to interact from the overlay page. I will check the behavior today.

[Yamamoto]

myListener.lua in the page’s external code

—
Runtime:addEventListener( “myEvent”, function(event)
print(“event.text”)
end)
—

myDispatcher.lua in the button of overlay

—
Runtime:dispatchEvent({ name=”myEvent”, text=”Changed By dispatchEvent” })
—

Alternatively use a global varibale set with Kwik

myListener.lua in the page’ external code

—
Runtime:addEventListener( “enterFrame”, function(event)
print(_K.myVar)
end)
—

myDispatcher.lua in the button of overlay

—
_K.myVar = “Changed From Overlay”
—

For instance, in an external code, you can access a displayObject with layer.YOUR_LAYER_NAME

  
   if _K.myVar == "Blue" then
      layer.YOUR_LAYER_NAME:setFillColor(0, 0, 1) -- R, G, B
   end

You can get a value from Overlay to set it to the function.

[otterslidestudio@aol.com]

That is helpful, thank you.

[otterslidestudio@aol.com]

How would I remove this event listener?

[Yamamoto]

OK, the listener was an anonymous function. let’s give it a function name to remove it later

local myListener = function(event)
   print(“event.text”)
end

-- Remove
Runtime:addEventListener( “myEvent”, myListener)

-- Add
Runtime:removeEventListener( “myEvent”, myListener)

[otterslidestudio@aol.com]

Thank you. I was having trouble figuring out that one on my own.

[Author]

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