Opengl spin shape

I am trying to get a sphere to spin on user input in opengl.

I have a class for my sphere which is a weapon in my game like below.


void Weapon::DrawWeapon()
{
      glPushMatrix();
    // Draw the Handle
   glPushMatrix();
   glRotatef(90.0f,5.0f,10.0f,5.0f);
   glScalef (2.0, 0.4, 1.0);
   glTranslatef(0.5f,-1.0f,0.6f);
  //glRotatef ((GLfloat) weapon, 0.0, 0.0, 1.0);
   glutSolidCube(10.0);
   
   


   

      glPopMatrix();
}

I have a function for the spin of the sphere


void spinDisplay(void)
{
   spin = spin + 2.0;
   if (spin > 360.0)
      spin = spin - 360.0;
   glutPostRedisplay();
}

How do I use this spin function with the sphere can you use it with glrotatef