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> A module must have a static part to be able to get loaded just like a text
module. Now, let's see the differences. The graphical module depends on the
"lttvwindow" module. See module.c from the control flow viewer for an example.
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> The init() and destroy() functions must register functions that can be called by
user interaction to instanciate the viewers. That's the goal of
lttvwindow_register_constructor() and lttvwindow_unregister_constructor() :
they register a function with a menu entry and an icon. The main window will
shown them in its interface and call the function when the button or menu item
is selected. This hook function must receive a pointer to a "Tab" object in
parameter.
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> Also note the presence of the destroy_walk() method. It is called when the
module is unloaded : it must destroy all the instances of the viewers from the
module.
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