Subscribes child element to events of this element. Returns an object that must be stored by child element and is used later in the RemoveChildElement method to quickly unsubscribe child element from events notification.

Returns a height of a content area of an element.

Returns a width of a content area of an element.

Returns default unit of measurement of an element.

Returns default unit of frames (i.e. padding/spacing)

Returns a font of an element. Necessary for the Em/Ex calculations.

Returns a parent element or null.

Returns a collection of elements styles. In the current design there are only two styles in a collection, "own" and "StyleTableCell"

Unsubscribes child element from events of this element. Child element is identified by the cookie parameter where a value returned by the AddChildElement method must be passed.