I created a canvas in a function, and in his function I have a CLICK eventlistener. On the click I want to manipulate what's inside the canvas.
Will referencing the canvas using the Dictionary class work?
A:
You don't need a dictionary. Assuming that you added click listener using something like:
canvas.addEventListener(MouseEvent.CLICK, clickHandler);
you can access the canvas inside the clickHandler method using the event.currentTarget property.
private function clickHandler(event:MouseEvent):void
{
//currentTarget is typed as object - cast it to canvas
var canvas:Canvas = Canvas(event.currentTarget);
//now do whatever you want with canvas
canvas.setStyle("backgroundColor", 0xffff00);
}
Amarghosh
2010-05-11 08:39:54
what if the eventlistener is a button inside the canvas? how would i access the children of the canvas? Would i need to use the dictionary in this case?
Adam
2010-05-11 13:39:52
@Adam you mean a button that is a child of canvas? You can get button from the `event.currentTarget` and then canvas from `button.parent` - but I'd rather declare `canvas` as an instance variable of the class rather than use a dictionary for this. That's what instance variables are meant for.
Amarghosh
2010-05-11 14:09:44