楼上的老大，不行呀！
我建了个工程，build，抱错如下：
Running build steps for project try...
Starting: C:/Qt/2009.02/qt/bin/qmake.exe C:/Users/Microsoft/Desktop/try/try.pro -spec win32-g++ -r
Exited with code 0.
Starting: C:/Qt/2009.02/mingw/bin/mingw32-make.exe -w
C:\Qt\2009.02\mingw\bin\mingw32-make.exe: Entering directory `C:/Users/Microsoft/Desktop/try'
C:/Qt/2009.02/mingw/bin/mingw32-make.exe -f Makefile.Debug
mingw32-make.exe[1]: Entering directory `C:/Users/Microsoft/Desktop/try'
g++ -enable-stdcall-fixup -Wl,-enable-auto-import -Wl,-enable-runtime-pseudo-reloc -Wl,-subsystem,console -mthreads -Wl -o debug\try.exe debug/main.o -L"c:\Qt\2009.02\qt\lib"
mingw32-make.exe[1]: Leaving directory `C:/Users/Microsoft/Desktop/try'
C:\Qt\2009.02\mingw\bin\mingw32-make.exe: Leaving directory `C:/Users/Microsoft/Desktop/try'
C:/Qt/2009.02/mingw/bin/../lib/gcc/mingw32/3.4.2/../../../libmingw32.a(main.o)(.text+0x106):main.c: undefined reference to `WinMain@16'
collect2: ld returned 1 exit status
mingw32-make.exe[1]: *** [debug\try.exe] Error 1
C:\Qt\2009.02\mingw\bin\mingw32-make.exe: *** [debug] Error 2
Exited with code 2.
Error while building project try
When executing build step 'Make'
我该怎么办？
