about QT project Skin .

first , look this pic:

http://qt.nokia.com/images/qt-in-use.../real_flow.jpg

I want make one like this pic Window style . how to do it?

thanks!:)

Write your own style deriving from QWindowsXPStyle or any other style you like...
You might also try using stylesheets, but there seems to be lot of controls in the snap you gave, and it might also be a tedious job

Or, you might be able to get part of the way there simply by modifying your app's QPalette. That will only affect the colors, but the colors are a big part of the sample you provided, and there would be only a handful of items that require changing.