Public go go=CreateObject("Form") go.Addobject("constd","constd") go.constd.Visible=.Y. go.Show() Return Define Class constd as Container Width=250 Height=120 borderwidth=1 specialeffect=1 Add Object lststd as ListBox With width=300,height=100,rowsourcetype=1,rowsource="a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z",; autohidescrollbar=1 EndDefineIf you run the code above and then use the mouse wheel on the listbox the scroll bar will display outside of the container. This also happens if you issue: