[Scilab-users] uicontrol in a function

[Chuox]

I thinkg i have a similar problem building also my first GUI, when i exec the
code for the second windows and click on close menu (cerrar) the windows
close whit no problem, but, when i excet the second window form the first
whit the button next (siguiete) the console give me this error:

!--error 999 
delete: The handle is not valid.
at line       2 of function cerrar_ventana2 called by :  
t("-7b163dae:14368ed0266:-7efb");cerrar_ventana2();if exists("%oldgcbo")
then gcbo = %oldgcbo; else 
while executing a callback

This is the code:

They are two windows:
in the windows one i have this:

//Boton Siguiente
Siguiente1 = uicontrol(ventana1, "Position", [350 60 130 20], ...
    "Style", "pushbutton", ...
    "FontSize", 11, ...
    "String", gettext("Siguiente"), ...
    "callback", "Siguiente()");  

function Siguiente()
    delete(ventana1);
    exec(UbicacionInst+'Ventana 2.sce');
endfunction

in the windows two i have:

function cerrar_ventana2()
    delete(ventana2);
endfunction

// Crea una ventana
ventana2 = figure("figure_name", gettext("Ventana 2"),...
    "Position",[50 50 600 600],...
    "BackgroundColor",[0.9 0.9 0.9],...
    "Tag", "ventana2");
    
// Quitar los menus por defecto de SciLab
delmenu(ventana2.figure_id, gettext("&File"));
delmenu(ventana2.figure_id, gettext("&Tools"));
delmenu(ventana2.figure_id, gettext("&Edit"));
delmenu(ventana2.figure_id, gettext("&?"));

// Desactivar barra de herramientas de graficos
toolbar(ventana2.figure_id, "off");

// Menu
h1 = uimenu("parent",ventana2, "label",gettext("Archivo")); 
h2 = uimenu("parent",ventana2, "label",gettext("Acerca"));

// Menu Archivo 
uimenu("parent",h1,"label",gettext("Cerrar"), "callback",
"cerrar_ventana2()", "tag","cerrar_programa"); 
uimenu("parent",h1,"label",gettext("Cerrar SciLab"), "callback",
"cerrar_scilab();", "tag","cerrar_SciLab"); 
 
// Menu Acerca 
uimenu("parent",h2, "label",gettext("Acerca"), "callback","Acerca();");



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