Hello My name its Igor. I use QT 4.1 with command qmake -project pozdrav.ui i'm create file pozdrav.pro With command qmake -makefile pozdrav.pro sem i'm create files makefile.relase and makefiles.debug With command uic pozdrav.ui -o pozdrav.h i'm create file pozdrav.h how I create executable file for windows, linux and mac now? Regards, Igor