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+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN""http://www.w3.org/TR/html4/loose.dtd">
+<HTML
+><HEAD
+><TITLE
+>The static part of a module</TITLE
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+TITLE="Linux Trace Toolkit Viewer Developer Guide"
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+TITLE="Linux Trace Toolkit Viewer Graphical Module Tutorial"
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+>Linux Trace Toolkit Viewer Developer Guide</TH
+></TR
+><TR
+><TD
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+>Chapter 3. Linux Trace Toolkit Viewer Graphical Module Tutorial</TD
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+><H1
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+><A
+NAME="AEN72"
+>3.2. The static part of a module</A
+></H1
+><P
+>&#13;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.
+</P
+><P
+>&#13;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.
+</P
+><P
+>&#13;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.
+</P
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