[Scilab-users] Callback in checkbox for multiple figures

[Izabela Wójcik-Grząba]

Hello,

In my programme in Scilab I create a figure with one plot and a checkbox 
which turns on/off the visibility of some parts of the plot. The 
callback function of checkbox works fine when there is only one figure, 
but when there are, for example, two figures the callback works on the 
current figure not the one I want to change (because I use gca). Here is 
the part with definition of the checkbox and callback function:

box_num_w=uicontrol(przel,"style","checkbox","backgroundcolor",..
[1 1 1],"value",1,"string","Numery 
węzłów","callback","niewidoczne_num_w");

function niewidoczne_num_w()
      a=gca;
      if get(gcbo,"value")==0 then
          value=get(gcbo,"value")
          a.children(7).visible="off";
      else
          a.children(7).visible="on";
      end
endfunction


I was trying to change the definition of a by using gcbo but none of my 
versions works.
I would appreciate any help.

Kind regards,
Iza