Modless form out of top-level form

Given a g_form as top-level form in READ EVENTS, could a new modeless form be popped out of the top-level form, possibly without _SCREEN.visible?

Do I need to play with MDI forms?

g_form=Createobject("myform") DO case CASE Type("g_form")="O" Set Sysmenu To _Msm_edit g_form.Show() Read Events .... ENDCASE