   select/pick problem
  Hi,I try to choose the object clicked.By in hits get the total number of object drawn:glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);  if(m_selectionFlag)    {    glGetIntegerv(GL_VIEWPORT, viewport);    glSelectBuffer(512, buffer);// Tell OpenGL To Use Our Array For Selection    (void) glRenderMode(GL_SELECT);    glInitNames();  // Initializes The Name Stack    glPushName(0);  // Push 0 (At Least One Entry) Onto The Stack    glMatrixMode(GL_PROJECTION);// Selects The Projection Matrix    glPushMatrix();    // Push The Projection Matrix    glLoadIdentity();  gluPickMatrix((GLdouble) m_mouseX, (GLdouble) (viewport[3]- m_mouseY), 1.0f, 1.0f, viewport);   } glMatrixMode(GL_PROJECTION); glLoadIdentity(); glFrustum(left,right,bottom,top,0.9,2*diam + 2); glMatrixMode(GL_MODELVIEW); glLoadIdentity(); GLfloat LightPosition1[]= { 0.0f, 0.0f, 0.0f, 1.0f }; glLightfv(GL_LIGHT1, GL_POSITION,LightPosition1); //stick the light to the viewer gluLookAt (0.0,0.0,m_modelsCompainer->getCenter()[2]+diam + 1,    m_modelsCompainer->getCenter()[0],m_modelsCompainer->getCenter() [1],m_modelsCompainer->getCenter()[2],0.0, 1.0, 0.0); Draw(); if(m_selectionFlag) {    glMatrixMode(GL_PROJECTION);    glPopMatrix(); glFlush();    //glMatrixMode(GL_MODELVIEW); hits=glRenderMode(GL_RENDER);    processHits(hits,buffer); } may be someone can see the problem thanks!!!    