Flash application run within ZINC native application does not receive mouse events related to scroll wheel on mouse. The support on that mouse events on OS X was previously problematic in Flash runtime itself but now it seems to be functioning within standalone flash player and flash plugin within Safari browser. The same event type seems to be not supported by flash runtime within ZINC built native application.

To repeat issue:
#1
download provided sample project
#2
build and run appliaction
#3
try using scroll wheel in your mouse to just rotate red hair-like rectangle

The code uses MouseEvent.MOUSE_WHEEL listeners to update rotation of red-filled display object:

package
{
import flash.display.*;
import flash.events.*;

public class MouseWheelTest extends Sprite
{
private var handle:Sprite = null;
public function MouseWheelTest()
{
addEventListener(Event.ADDED_TO_STAGE, initMouseListener);
handle = new Sprite();
handle.x = handle.y = 50;
addChild(handle);
handle.graphics.beginFill(0xFF0000);
handle.graphics.drawRect(-50, 0, 100, 2);
handle.graphics.endFill();
}
private function initMouseListener(e:Event):void
{
removeEventListener(Event.ADDED_TO_STAGE, initMouseListener);
stage.addEventListener(MouseEvent.MOUSE_WHEEL, handleMouseWheel);
};
private function handleMouseWheel(e:MouseEvent):void
{
handle.rotation += e.delta;
}
}
}