message length

HOw to display the length of message given which is given as input in the message box?

[Jan]

What is "the message box"? What means "input" here? Which "length" do you want: The number of characters or the width when displayed on the screen considering the font and line wrapping?

Answer 1

[Titus Edelhofer]

Hi Vino,

if you do

edit msgbox

you will see at line 274 (at least in R2012a I'm looking at) a call to textwrap with argument 75. So: msgbox will make the box as large as to fit the string you entered, but if it will be too long, it will be broken such that it is 75 characters at most. Of course you could call textwarp yourself before calling msgbox if you want to have less characters in a row.

Titus

[Vino]

titus

Thank you...well how to do text wrap ? i need to display long message. may be i need either the message box width should be increased or a scroll box...

[Jan]

The size of the message box is increased automatically. But you can call the function textwrap by your own also. Another solution is using the FEX submission http://www.mathworks.com/matlabcentral/fileexchange/24871-autowarndlg . The largest part of the code cares for reshaping the message text until it fits nicely into a box.

[Tom]

hey,

I'm currently bothered by the 75 characters limit of the msgbox function aswell... Do you know if it's possible to use the textwrap function also to raise these 75 characters that the automatic textwrap does not occur. Or can I only use it to reduce the length of characters in a messagebox by textwrapping my 'string' before??

I hope that somebody can help me with my problem even if this is an old entry!

Answer 2

[Vino]

cant we display numbers in msg box?

[Titus Edelhofer]

yes, you can: use e.g. num2str to convert to a string, e.g.

msgbox(['The answer is ' num2str(42) '.'])