killwindow utilizing a loop

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Hi, I wrote the following procedure to delete all the subwindows in a window named "Panel". The names of the subwindows are like "Panel#G0", "Panel#G1"...
When i run the procedure, the pop-up window appears "window while executing KillWindow, the following error occured: Expected window name".
I am quite confused with this error, so how can i handle with this problem？
Thanks in advance for help!
function button_clear(ctrl):Buttoncontrol
  string ctrl
  variable subwinnum
  variable i
  string/g childlist
  string subwn, subwnname
  childlist=Childwindowlist("Panel")
  subwinnum=ItemsInList(childlist)
  for(i=0; i<subwinnum; i+=1)
    Sprintf subwn, "%d", i      
    subwnname="Panel#G"+subwn      
    killwindow subwnname
  endfor
  KillWaves/A/Z/F
end
Also subwn isn't being incrementing. Move the sprintf inside the for loop or use something like the following.

  for(i=0; i<subwinnum; i+=1)
    subwnname="Panel#G"+num2str(i)
    killwindow subwnname
  endfor


Finally, the statement
subwinnum=ItemsInList(childlist)-1

should be
subwinnum=ItemsInList(childlist)

September 1, 2012 at 02:33 pm - Permalink

This version works:

function button_clear(ctrl):Buttoncontrol
    string ctrl

    String panel= WinName(0,64) // top panel
    String childlist=Childwindowlist(panel)
    Print childlist
    variable subwinnum=ItemsInList(childlist)
    variable i
    for(i=0; i<subwinnum; i+=1)
        String subwnname= panel+"#"+StringFromList(i,childList)
        killwindow $subwnname
    endfor
    KillWaves/A/Z/F
end

--Jim Prouty
Software Engineer, WaveMetrics, Inc.

September 2, 2012 at 10:41 am - Permalink