Unable to make changes to old project

garth_thompson

I have a project which I build on another computer and move it to my new computer running ubuntu 14.04 and unable to make changes. I want to add another lineEdit when I add it using qtcreator the designer form show it but when trying to build I get error saying no lineEdit.

I am sure it is something I have left out of the new install on qtcreator but I have been unable to find what.

Garth

SGaist

Hi and welcome to devnet,

Are you by any chance using Qt 4 for your old computer and Qt 5 on your new one ?

If so you need to add

@QT += widgets@

to your pro file

garth_thompson

Thank you for your reply as it turn out you are correct the project was done in qt4 and I now have qr5 found many change I had to make. Now have the program working.

Gartrh

SGaist

You're welcome !

You can also use this construct if you want to retain compatibility with both:

@greaterThan(QT_MAJOR_VERSION, 4): QT += widgets@