QT install compatibilty problem

[e8johan]

Could it be that your mingw is a good version, but your Windows headers (the file that you refered to) is older?

[overcast]

Yes problem is solved i just installed the Mingw again with diffrent path in envirement variable & installed the QT again.it works.I think ur are right the windows heade ris old,but i didn't find any new version so if you know other stable version of MIngw then please let me know.