Change "Edit" uicontrols background (how to set a structure array element to a specific value?)

I have a row of "edit" uicontrols. The handles of these are in a vector (e.g. in c). I want to change the background color of each "edit" uicontrol.

hfig=figure(1);
clf;

c(1) = uicontrol(hfig...
             ,'Style','edit'...
             ,'Position',[20 20 60 20]...
             );
         
c(2) = uicontrol(hfig...
             ,'Style','edit'...
             ,'Position',[20 50 60 20]...
             );         

If I try to change the background color

c.BackgroundColor= [1 0 0]
c(:).BackgroundColor= [1 0 0]

gives the same error:

"Expected one output from a curly brace or dot indexing expression, but there were 2 results."

Is it possible to do it this or similar way, or just the for loop is the solution? I would be happy if logical indexing would work changing just special edit boxes' Foreground!

Answer 1

[Walter Roberson]

set(c, 'BackGroundCOlor', [1 0 0])

[Csaba]

Yes!!!!

Thank you.

AND, the logical indexing works tooo!

Great!

Csaba

[Csaba]

However, it does not work for a user definied structure.

a(1).d=1;
a(2).d=3;
set(a,'d',22)

gives the error

Error using set
Conversion to double from struct is not possible.

So it works for object arrays but not for user definied structure arrays.

[Walter Roberson]

arrayfun(@(V) setfield(V, 'd', 22), a)  %works on structs
arrayfun(@(V) setfield(V, 'BackgroundColor', [1 0 0]), c)  %works on objects

[Csaba]

Sorry Walter, it does not work on structures. It also works on objects, but does not on user definied structures.

After

arrayfun(@(V) setfield(V, 'd', 22), a)  %works on structs

a.d

ans =

     1


ans =

     3

[Walter Roberson]

a = arrayfun(@(V) setfield(V, 'd', 22), a);

setfield() returns a new structure with the changes, but does not change any variable passed into it.

setfield() works to change graphics objects without assignment because graphics objects are handle objects.