Unable to open Qt form (*.ui) files from Visual Studio

Question

I am unable to open QT form file (*.ui) from a Visual Studio 2008 Qt project. I'm using Qt 4.5.0. I get the the following error:

The file test.ui cannot be opened with Qt 4 form editor. Try converting the file using uic.exe

Answer 1

I had the same symptoms, and the solution was to remove the top line of the ui file (once open with a text editor)

Surprising that Qt does not support well formed xml...

Meilleures Salutations

Answer 2

Are you sure that your *.ui file are in the qt4 format and not in the qt3 format ? If there have been created with qt3, ui.exe can convert them to qt4 !

Another reason could be the version of the qt-integration tool for visual studio 2008, Do you have the last version ? Can you open the *-ui file with Qt Designer ?

Answer 3

Bingo! It worked, Thanks Antoine

Matthieu: remove the line

<?xml version="1.0" encoding="UTF-8"?>