Thanks Tb.
QT Creator 2.0 (Based on 4.7.0 - Built on Jun 21 2010)
QT Designer 4.6.3
I have installed the official qt-sdk-win-opensource-2010.04.exe
What can I do ?
( I have made a question about the difference betwen Cretor Design mode and QT Designer at QT-Tools Forum , but nobody answer. May be the same reason ?)