Brew MP 1.0.2
This function retrieves a pointer to the first widget in the root container's
widget stack. This is, effectively, the widget at the top of the widget
stack. The widget on the top of the stack is the first one drawn onscreen
and is the bottommost with regard to front-to-back ordering within the container.
A pointer to an IRootContainer object.
- A pointer to the widget at the top of the root container's widget stack, or
NULL when the widget stack is empty.