A mouse-over popup menu

newpanel
button myButton proc=myProc

function myProc(info)
    struct wmbuttonaction &info
    
    if(info.eventcode==5)
        CtrlNamedBackground myBkg, proc=myBkgFunc,start=ticks+60,period=60
    elseif(info.eventcode==6)
        CtrlNamedBackground myBkg, kill
    endif
end
 
function myBkgFunc(info)
    struct wmbackgroundstruct &info
    
    popupcontextualmenu "Hello!"
    return 1
end