Guide: alphabet and symbols

function myGUI
  % Create figure
  S.fh = figure('units','pixels',...
                'position',[500 500 200 100],...
                'menubar','none',...
                'name','myGUI',...
                'numbertitle','off',...
                'resize','off');
    % Create java edit text box
    % I avoid he MATLAB uicontrol because the KeyPressFunction has a bug which
    % doesn't update in real time the string 
    S.ed = javax.swing.JTextField();
    S.ed.setHorizontalAlignment(javax.swing.JTextField.CENTER)
    javacomponent(S.ed, [10 60 180 35]);
    % Create push button
    S.pb = uicontrol('style','push',...
                     'units','pix',...
                     'position',[10 10 180 40],...
                     'fontsize',14,...
                     'string','Do smt');
    % Add check of the string in the edit text box
    set(S.ed, 'KeyReleasedCallback', @ed_krc);
      function ed_krc(varargin)
          % If the string contains symbols
          if any(regexp(char(S.ed.getText),'\W+'))
              % Disable push button
              set(S.pb,'Enable','off')
          else
              % Otherwise enable it
              set(S.pb,'Enable','on')
          end
      end
  end

Why I use java edit text box: http://www.mathworks.com/matlabcentral/newsreader/view_thread/151905

14 个评论
显示 12更早的评论隐藏 12更早的评论

Oleg Komarov 2012-3-26

Example with subfunctions:

function mainGUI

end

function callback

end

Example with nested functions

function mainGUI

function callback

end

john 2012-3-28

Hi, can I define typ of the number? if permissible numbers are: 4,3 or 3*10^3 or 4.3*10^(-4) or 3.5e2 or 4.6e(-2).

all others are not permissible.

if any(regexp(char(get(handles.edit7,'String')),'[^0-9.*^()-]'))

set(handles.edit,'String','Error');

else

set(handles.edit, 'String','OK');

end;

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