关于No valid Qt version set. Set one in Tools/Options
在Windows XP下我安装的是qt-sdk-win-opensource-2010.02.1.exe,但是编一个小程序就出现No valid Qt version set. Set one in Tools/Options Error while building project TowerOfHanoiWhen executing build step 'QMake'Canceled build.请问各位如何解决?环境变量里设置了PATH D:\Qt\qt\bin