Listing 1. ``Hello Cone'' Program

#include <Inventor/Xt/SoXt.h>
#include <Inventor/Xt/viewers/SoXtExaminerViewer.h>
#include <Inventor/nodes/SoCone.h>
#include <Inventor/nodes/SoDirectionalLight.h>
#include <Inventor/nodes/SoMaterial.h>
#include <Inventor/nodes/SoPerspectiveCamera.h>
#include <Inventor/nodes/SoSeparator.h>
main(int , char **argv)
{
Widget myWindow = SoXt::init(argv[0]);
if (myWindow == NULL) exit(1);
SoSeparator *root = new SoSeparator;
root->ref();
SoMaterial *myMaterial = new SoMaterial;
myMaterial->diffuseColor.setValue(1.0, 0.0, 0.0);
root->addChild(myMaterial);
root->addChild(new SoCone);
// Set up viewer:
SoXtExaminerViewer *myViewer =
   new SoXtExaminerViewer(myWindow);
myViewer->setSceneGraph(root);
myViewer->setTitle("Examiner Viewer");
myViewer->show();
SoXt::show(myWindow);
SoXt::mainLoop();
}