RE: Stacking list of ingredients

[Richardson, Anthony]

From: Andrew Lorick Paintings

> I'm trying to create a shopping list using buttons and am having trouble 
> getting my list to stack items.
> What I want the program to do: 
> Click the meal that you want to add to the list --> The button callback f'n 
> adds to the global list --> Click done and the total list of ingredients 
> prints to the 
> command window.
>
> Menu script: 
> clc, close all
> f=figure;
> set(f,'userdata',zeros(25,1));
> bg_h=uibuttongroup(f, 'title', 'Breakfast', 'units', 'normalized', 
> 'Position', [0 0.5 0.5 0.5]);
> bg2_h=uibuttongroup(f, 'title', 'Entrees', 'units', 'normalized', 'Position', 
> [0.5 0.5 .5 0.5]);
> bg3_h=uibuttongroup(f, 'title', 'Sides', 'units', 'normalized', 'Position', 
> [0 0 0.5 0.5]);
> lg_h=uibuttongroup(f, 'title' ,'List','units','normalized','Position', [0.5 0 
> 0.5 0.5]);
> TOTAL=uicontrol(lg_h, 'style', 'listbox', 'units','normalized','Position', [0 
> 0 1 1]);
> Oatmeal_h=uicontrol(bg_h, 'style', 'pushbutton', 'string', 'Oatmeal','units', 
> 'normalized','Position', [0 0.85 0.25 0.1], 'callback', 
> address@hidden,TOTAL});
>
> Oatmeal Callback:
>
> function oatmeal_fn(Oatmeal_h, evt, f)
> total=get(f,'userdata');
> ind=5;
> total(ind)=total(ind)+1;
> set(f,'userdata',total);  
> endfunction
>
> The error message I receive is: 
>
> >> error: total(5): out of bound 0
> execution error in graphics callback function
>
> Does this mean that total is a matrix with no elements? I'm not sure what I'm 
> doing wrong.

It seems to work correctly if you change 'address@hidden,TOTAL}' in the last 
call to uicontrol in your script to 'address@hidden,f}' which I think is what 
you meant.

Tony Richardson