Define a custom hitarea in Flex
Flex makes it possible to define a sprite as a custom hitarea for components that extend UIComponent. Defining a custom hitarea can become handy when dealing with complex graphical objects that consist of multiple elements such as bitmap images.
Assigning a sprite to the objects hitarea variable doesn’t show any effects.
The hitarea also has to be added as a child to the display object.
// Create the bitmap var bitmap:Bitmap; bitmap = this._loader.content as Bitmap; // Create a hitarea for the bitmap // I assume you already made a sprite (called mySprite) var _hitarea:Sprite = mySprite; //Add the bitmap as a child to a container this.imageWrapper.addChild(bitmap); //Hitarea also HAS to be added as a child in order to work!! _hitarea.visible = false; this.imageWrapper.addChild(_hitarea); // Set the hitarea to imageWrapper this.imageWrapper.hitArea = _hitarea;
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Here's a tutorial about how to create a hitarea-sprite automatically out of a given image (or it's bitmapData).