[Qt-creator] Problem with Writing a Simple Program with Qt Creator

[Sarah Smith]

Hi Nitesh,

Check that you have:

#include "ui_textfinder.h"

at the top of textfinder.cpp.  Normally QtCreator will have put this  
declaration there for you.

When QtCreator generates your textfinder.h it will put

namespace Ui {
    class TextFinder;
};

at the top - this just forward declares Ui::TextFinder - it will show  
up as an undefined type until the header is included.

If the #include is present, then check that you named the class in  
your ui form correctly - it is case sensitive and should be exactly  
"TextFinder" in the first line of the property sheet.

Hope that helps,

Sarah Smith

On 27/07/2009, at 4:07 AM, ext Nitesh wrote:

> I am new to Qt. I was trying around Qt Creator. I did exactly what  
> its been wriiten here
>
>
> http://doc.qtsoftware.com/qtcreator-1.2/creator-writing-program.html
>
> but when I try to build it . I get this error. This is the first  
> error. I don't seem to find a solution.
>
>  C:/qtprojects/TextFinder/textfinder.cpp:9: error: invalid use of  
> undefined type `struct Ui::TextFinder'
>
>
> Why is it showing error?
>
>
> Thanks in advance for your help.
>
> Nitesh
> <ATT00001.txt>

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