How can I change the width of a dialog box in MATLAB?

I would like to be able to change the width of a dialog box, for example, one that is created using the WARNDLG function. I have a long line of text and I would like it all to fit in one line in the Warning Dialog box.

Answer 1

[MathWorks Support Team]

The ability to change the width of the warning dialog box so that it displays the text in one line is not available in MATLAB.

A possible workaround is to get the Children of the dialog box. Replace the axes with a text uicontrol whose width can be controlled:

Example:

input={'ddddddddddddssssssssoooooooooooooooooooooooooossssssssssseeeeeeewwwwqqqqqqqqqqqqqqqqqqnnnnnnnnnnnnnnnnnnnnuuuuuuuuuuuuu8888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888'};

h = helpdlg(input);

set(0,'ShowHiddenHandles','on');

   set(h,'Position',[100,100,500,300]);

ui = get(h,'Children');

delete(ui(2));

y=uicontrol('style','text','string',input,'units','normalized');

set(y,'Position',[.1 .5 .8 .3],'HorizontalAlignment','left');

set(h,'Children',[ui(1) ui(3) y]);