You misinterpretted by intent. It IS possible to do this, just not with the stock menu() function. You'll have to write your own menu() function (basically a modal figure with a few uicontrols that returns a number. Since you'll be constructing the uicontrols yourself you can give them a nice large fontsize. It should be pretty straightfoward.
Here is something I threw together that should do what you want. It's a bit sloppy on the positioning but could be easily modified to be made pretty:
function selection = mymenu(question,varargin)
%Simple my menu
%
%Usage:
% -selection = mymenu('Choose one please:','monday','tuesday','wednesday')
%
%Inputs:
% -question: string with question
% -options: n strings of options
%
%Outputs:
% -selection: index of selected button
%
%Error checking:
assert(nargin >=2 ,'At least two inputs expected');
assert(ischar(question),'question should be a string');
assert(all(cellfun(@ischar,varargin)), 'options should be strings')
%Build figure:
n = length(varargin); %number of options
hF = figure('windowstyle','modal','units','pix','position',[300 300 200 (n+1)*80]);
uicontrol('style','text','position',[10 (n+1)*70,100,20],'string',question);
for ii = n:-1:1
H(ii) = uicontrol('style','push','units','pix','position',[10 (ii-1)*80 150 60],...
'string',varargin{ii},'fontsize',20,'callback',@select);
end
waitfor(hF)
%Select and close:
function select(src,~)
idx = 1:n;
selection = idx(ismember(H,src));
close(hF)
return
end
end
Save this is in mymenu.m
