Moved code across to use the new ArgumentParser.

src/Demos/osgpbuffer/osgpbuffer.cpp

@@ -590,32 +590,32 @@ void write_usage(std::ostream& out,const std::string& name)
 
 int main( int argc, char **argv )
 {
+    // use an ArgumentParser object to manage the program arguments.
+    osg::ArgumentParser arguments(&argc,argv);
 
-    // initialize the GLUT
-    glutInit( &argc, argv );
+    // set up the usage document, in case we need to print out how to use this program.
+    arguments.getApplicationUsage()->setCommandLineUsage(arguments.getProgramName()+" [options] filename ...");
+    arguments.getApplicationUsage()->addCommandLineOption("-h or --help","Display this information");
+ 
+    // initialize the viewer.
+    osgGLUT::Viewer viewer(arguments);
 
-    if (argc<2)
+    // if user request help write it out to cout.
+    if (arguments.read("-h") || arguments.read("--help"))
     {
-        write_usage(osg::notify(osg::NOTICE),argv[0]);
-        return 0;
+        arguments.getApplicationUsage()->write(std::cout);
+        return 1;
     }
 
-    // create the commandline args.
-    std::vector<std::string> arguments;
-    for(int i=1;i<argc;++i) arguments.push_back(argv[i]);
-    
+    // any option left unread are converted into errors to write out later.
+    arguments.reportRemainingOptionsAsUnrecognized();
 
-    // initialize the viewer.
-    osgGLUT::Viewer viewer;
-    viewer.setWindowTitle(argv[0]);
-    
-    // configure the viewer from the commandline arguments, and eat any
-    // parameters that have been matched.
-    viewer.readCommandLine(arguments);
-    
-    // configure the plugin registry from the commandline arguments, and 
-    // eat any parameters that have been matched.
-    osgDB::readCommandLine(arguments);
+    // report any errors if they have occured when parsing the program aguments.
+    if (arguments.errors())
+    {
+        arguments.writeErrorMessages(std::cout);
+        return 1;
+    }
     
     // load the nodes from the commandline arguments.
     osg::Node* loadedModel = osgDB::readNodeFiles(arguments);