Write in an edit text character set: A-Z, a-z and '-'

Question

Diana Acreala 2011-10-25

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/19331-write-in-an-edit-text-character-set-a-z-a-z-and

回答： Voss 2021-12-28

Hello all,

I have this problem with an edit text that should allow the user to enter only the charater set: A-Z, a-z and '-'. Using another character then a msg error should appear.

I used the code below:

variable_name=get(handles.variable_name_edittext,'String');
% Exclude characters, which are accepted by sscanf:
variable_name(ismember(variable_name, '-+eEgG')) = ' ';
% Convert to one number and back to a string:
check_val = sprintf('%g', sscanf(variable_name, '%g', 1));
set(handles.variable_name_edittext, 'String', check_val);
% Perhaps a small warning in WARNDLG or inside the GUI:
if ~all(ismember(variable_name, '-1234567890AaBbCcDdEeFfGgHhIiJjKkLlMmNnOoPpQqRrSsTtUuVvWwXxYyZz'))
    msgbox('Please use for the name only the following characters: A-Z, a-z and -','Warning','warn')
    set(handles.variable_name_edittext,'String','');
end

This is what I also found in one of the questions here, but it was reffering to numbers. So instead of '-1234567890AaBbCcDdEeFfGgHhIiJjKkLlMmNnOoPpQqRrSsTtUuVvWwXxYyZz' was '.1234567890'.

With the numbers is working. With my character set.. not really.. I tried to type: test-TEST (which contains what is allowed) but the error message still appear for this case which should be accepted!

So.. where is my mistake here? Why is not working? Thank you! Diana