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-- This method is only necessary to setup a global pointer,
-- which is a reference to WRAPPER object and is stored in
-- "C" modules.
-- Each object must supply it's own method to paint itself
-- Each object must supply it's own method to resize
-- itself. Especially complex objects.
-- The object must know how to activate itself.
-- Especially complex objects.
-- The object must know if it is possible to destroy it
-- The object must know how to destroy itself.
-- May be some actions must be done when deactivating object.
-- Called when menu item is only selected, but user
-- has not decided yet to invoke the command
-- Called when user tries to start working with menu
-- If some control in window changes it's data parent
-- window is called this way. For example: input line
-- is changed, button group is modified, etc.
-- When some control in window is clicked, parent
-- is notified by this function
-- When some control in window is double clicked, parent
-- is notified by this function
-- If the scroll bar belongs to window border the scroller param
-- is set to VOID
-- If the scroll bar belongs to window border the scroller param
-- is set to VOID
-- Horizontal scroll bar manipulations.
-- Vertical scroll bar manipulations.
-- This method is unique to dialogs
-- This method is for self drawable objects displaying.
-- This method is called when user presses down some key
-- on the keyboard
-- This method is called when user releases some key
-- on the keyboard
-- Called when timer event occures
-- Called before resizing of the object
-- Validation support. Child (t) may notifiy his
-- parent (w) that it has loose the focus, but its
-- contents are invalid
-- used to cooperate with the graphics drawing engine.
-- used to cooperate with the graphics drawing engine.
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