In need of an advice of simple line drawing with Qt

[Arvelua]

Thanks for your reply!

I corrected the line #7, but yet I get these error messages:

c:\Qt\2010.02.1\qt\lib/libqtmaind.a:-1: error: In function `WinMain@16':
 
C:\qt-greenhouse\Trolltech\Code_less_create_more\Trolltech\Code_less_create_more\Troll\4.6\qt\src\winmain/qtmain_win.cpp:131: undefined reference to `qMain(int, char**)'
 
:-1: error: collect2: ld returned 1 exit status

c:\Qt\2010.02.1\qt\lib/libqtmaind.a:-1: error: In function `WinMain@16':

C:\qt-greenhouse\Trolltech\Code_less_create_more\Trolltech\Code_less_create_more\Troll\4.6\qt\src\winmain/qtmain_win.cpp:131: undefined reference to `qMain(int, char**)'

:-1: error: collect2: ld returned 1 exit status

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