Guide- coma

Question

john 2012-3-20

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/32881-guide-coma

Hi, can you help me please? I have problem with comma ",". I need this:

If I write number into edittext with coma for example 4,3 or 34,4534 or 2342,44 , then I need to write for example into statictext "error". . . else into statictext "ok".

It is possible?

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Daniel Shub 2012-3-20

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/32881-guide-coma#answer_41448

在 MATLAB Online 中打开

Generally we like to see that you have put effort into trying to solve your problem. It looks like you have been trying things here: http://www.mathworks.com/matlabcentral/answers/32252-field-text-number and that this is not exactly an overlapping question ...

I start by defining a function iscomma

function iscomma(src, h)
if strfind(get(src, 'string'), ',')
  set(h, 'string', 'error');
else
  set(h, 'string', 'ok');
end

Then I create two uicontrols and set the callback of the edit box to iscomma

h1 = uicontrol('style', 'edit');
h2 = uicontrol('style', 'text', 'units', 'normalized', 'position', [0.5, 0.5, 0.5, 0.5]);
set(h1, 'Callback', @(src, evt)iscomma(src, h2))

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

john 2012-3-20

Thank you .

I made some change

str = get(handles.edit,'String')

if strfind(str, ',')

set(handles.text, 'String','error');

else

set(handles.text, 'String','ok');

end;

请先登录，再进行评论。

Answer 2

Dr. Seis 2012-3-20

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/32881-guide-coma#answer_41446

Yes. Every time the user types something and then hits enter, or tab, or clicks somewhere else in the GUI, etc. the callback function associated with your edittext will execute and you can place a set there to change the static text to "error" or "ok" depending on whether the string you get from the edittext has a comma in it.