How to fix the wrong input prompt in the main processing window of matlab?

Everything was ok. But suddenly it stuck and i again opened it. But input prompt was showing ";;" instead of ">>" and when i typed 'j' is displayed it as 'g'. When I typed 'g', it displayed it as 'd'. Same problem with every letter. How to fix it? I already restarted computer and also reinstalled matlab2012b but problem still exists.

Kindly help me!

Regards,

[Jan]

This is obviously the strangest problem posted in this forum. Therefore it is my

 question of the week!

Does it concern only Matlab or are other programs affected also?

Answer 1

[Jan]

Please try to change the display font. I know this can be hard when you cannot read displayed messages. Perhaps this helps:

matchClass     = 'javax.swing.JTextArea$AccessibleJTextArea';
cmdWinDoc      = com.mathworks.mde.cmdwin.CmdWinDocument.getInstance;
cmdWinListener = cmdWinDoc.getDocumentListeners;
for iL = 1:length(cmdWinListener)
   if isa(cmdWinListener(iL), matchClass)
      jTextArea = cmdWinListener(iL);
      break;
   end
end

Data = java.awt.Font('Arial', java.awt.Font.PLAIN, 14);
jTextArea.setFont(Data);

Or use other fonts instead of Arial.

See also http://www.mathworks.com/matlabcentral/fileexchange/32005-cmdwintool

If this works, the font file is damaged. Then the problem should appear also in a text editor, when the specific font is selected. And re-installing Matlab cannot solve the problem. But I never have heard of such a problem and it is not trivial do destroy a font file such, that it is only re-ordered and not damaged completely. Therefore other reasons are more likely.

[Muhammad Hasan]

Dear Simon, Should I run this code everytime when I switch on my computer? Today, when I switched my computer, that problem happened again . Then, I again run this code and it worked nice. How to fix this issue permanently?

Regards,

Answer 2

[Muhammad Hasan]

It is only affecting the matlab main processing window. If i search anything in matlab, then it works well. All other softwares like Microsfot Words are working well.

Answer 3

[Muhammad Hasan]

Thanks dear Simon. The code which you sent worked. I just pasted it there and 'Enter' and everything became normal.I am very thankful to you. What do you think the reason behind it? Font file damaged?

Regards,