I am writing a MATLAB GUI program where the data put in a textbox is stored in a .dat file. When the program is reloaded, the textboxes fetch the data from the file (so that the user doesn't have to re-input his info every time). This part of the code saves the data to a .dat file:
fid = fopen('textboxdata.dat', 'wt');
fprintf(fid, '%s\n', host);
fprintf(fid, '%s\n', username);
fprintf(fid, '%s\n', password);
fclose(fid);
[host, username, and password are strings]
This part of the code fetches the data and puts in into the text boxes:
s = dir('textboxdata.dat');
if s.bytes ~= 0
fid = fopen('textboxdata.dat', 'rt');
A = textscan(fid, '%s', 3);
A = A{1};
set(handles.hostbox, 'String', A(1))
set(handles.usernamebox, 'String', A(2))
set(handles.passwordbox, 'String', A(3))
fclose(fid);
end
Now this works fine, but when the user tries to use this data to log onto an FTP server, I get this error:
??? Error using ==> fprintf Function is not defined for 'cell' inputs.
Error in ==> realgui>logonbutton_Callback at 198 fprintf(fid, '%s\n', host);
Error in ==> gui_mainfcn at 96 feval(varargin{:});
Error in ==> realgui at 42 gui_mainfcn(gui_State, varargin{:});
Error in ==> @(hObject,eventdata)realgui('logonbutton_Callback',hObject,eventdata,guidata(hObject))
But weirdly enough, if you retype all the data, you can log onto the FTP server just fine! I am thoroughly lost here. Does anyone have a clue what is happening?
