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| function password
% PASSWORD GUI password checker.
% PASSWORD allows user to enter a string than
% can be compare latter with a recorded password.
%
% Each character entered will be replace with # when typed.
%
% See also "Solution Number: 1-16SPL" at the Mathworks
% web site "http://www.mathworks.com/support"
%
% Author: Jerome Briot, 2005/08/04 (MATLAB R12.1)
% http://www.developpez.net/forums/member.php?u=125006
% http://www.mathworks.com/matlabcentral/fileexchange/loadAuthor.do?objectId=1094934&objectType=author
% Contact : dutmatlab#at#yahoo.fr
% Revision :
% Comments :
%
pos=get(0,'screensize');
x=300;
y=100;
figure('units','pixels', ...
'position',[0.5*(pos(3)-x) 0.5*(pos(4)-y) x y], ...
'windowstyle','modal', ...
'name','Password Checker', ...
'numbertitle','off',...
'keypressfcn',@kpfpassword, ...
'tag','passwordchecker');
% To increase the "safety" of the code, I advise people
% to change the Tag of the next uicontrol (here simply named "a").
% DO THIS IN ALL THREE FILES :
% ENTERPASSWORD.M, CHECKPASSWORD.M and KPFPASSWORD.M
%
uicontrol('style','edit',...
'units','normalize', ...
'position',[0.1 0.65 0.8 0.28],...
'tag','a', ...
'enable','inactive', ...
'fontunits','point', ...
'fontsize',13);
uicontrol('style','text',...
'units','normalize', ...
'position',[0.1 0.34 0.8 0.25],...
'tag','pwdmessage', ...
'string','Please, enter the password',...
'fontunits','point', ...
'fontsize',12,...
'backgroundcolor',get(gcf,'color'));
% Check button
uicontrol('units','normalize',...
'position',[0.1 0.05 0.25 0.3], ...
'string','Check',...
'tag','Checkbutton', ...
'callback',@checkpassword);
% Cancel button
uicontrol('units','normalize',...
'position',[0.38 0.05 0.25 0.3], ...
'string','Cancel',...
'callback','close(gcf);');
% Help button (if someone need it)
uicontrol('units','normalize',...
'position',[0.66 0.05 0.25 0.3], ...
'string','Help', ...
'enable','off');
refresh
function kpfpassword(obj,event)
% KPFPASSWORD KeyPressFcn analyser for ENTERPASSWORD GUI.
% KPFPASSWORD analyses which key is pressed by the users.
% If it's a common character, it's replaced with a "#" and
% stored to later checking.
%
% Other keys list :
% Enter : activate the Check button
% Esc : activate the Cancel button
% Backspace : remove the last character entered by the user
%
if isempty(findobj('type','figure','tag','passwordchecker'))
error('Use ENTERPASSWORD first');
end
% Check which key is pressed
switch double(get(gcf,'CurrentCharacter'))
case 13 % Enter key
checkpassword;
case 8 % Backspace key
k=get(findobj('tag','a'),'userdata');
if ~isempty(k)
set(findobj('tag','a'),'userdata',k(1:end-1));
set(findobj('tag','a'),'string',repmat('#',1,length(k)-1));
end
case 27 % Esc key
close(gcf);
otherwise % Any other keys
k=[get(findobj('tag','a'),'userdata') get(gcf,'currentcharacter')];
set(findobj('tag','a'),'userdata',k);
set(findobj('tag','a'),'string',repmat('#',1,length(k)));
end
function checkpassword(obj,event)
% CHECKPASSWORD Check password entered by user.
% CHECKPASSWORD checks the password entered by user
% in the ENTERPASSWORD function.
%
% Revision :
% Comments :
%
if isempty(findobj('type','figure','tag','passwordchecker'))
error('Use ENTERPASSWORD first');
end
% Change the next line to set your own password
password='matlab';
% Get the user entry
str=get(findobj('tag','a'),'userdata');
% Compare it to the password
if strcmpi(str,password)
set(findobj('tag','a'), ...
'userdata',[], ...
'string',[]);
set(findobj('tag','pwdmessage'), ...
'string','Good Password',...
'foregroundcolor',[0 .8235 0]);
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Do what you want here if the password is RIGHT %
% flag=1;disp(flag) % return 1 for example %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
else
set(findobj('tag','a'), ...
'userdata',[], ...
'string',[]);
set(findobj('tag','pwdmessage'), ...
'string','Wrong Password',...
'foregroundcolor','r');
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Do what you want here if the password is WRONG (OPTIONAL) %
% flag=0;disp(flag) % return 0 for example %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
end |
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