windows下的起始函数是winmain，但是qt的主函数是main，如何在windows下启动？

[辉歌]

我在windows下如下代码：
#include <qapplication.h>
#include <qpushbutton.h>


int main( int argc, char **argv )
{
QApplication a( argc, argv );

QPushButton hello( "Hello world!", 0 );
hello.resize( 100, 30 );

a.setMainWidget( &hello );
hello.show();
return a.exec();
}

qmake后namke提示：
F:\Study\t2>nmake

Microsoft (R) Program Maintenance Utility Version 6.00.8168.0
Copyright (C) Microsoft Corp 1988-1998. All rights reserved.

link /NOLOGO /SUBSYSTEM:windows /OUT:t2.exe @C:\DOCUME~1\Brilly\LOCALS~1
\Temp\nma03640.
LINK : warning LNK4001: no object files specified; libraries used
LINK : warning LNK4068: /MACHINE not specified; defaulting to IX86
LINK : error LNK2001: unresolved external symbol _WinMainCRTStartup
t2.exe : fatal error LNK1120: 1 unresolved externals
NMAKE : fatal error U1077: 'link' : return code '0x460'
Stop.

[LinHanLao]

是不是要把/SUBSYSTEM:windows
改成/SUBSYSTEM:console

[辉歌]

还是不行，改后为：
F:\Study\t2>nmake

Microsoft (R) Program Maintenance Utility Version 6.00.8168.0
Copyright (C) Microsoft Corp 1988-1998. All rights reserved.

link /NOLOGO /SUBSYSTEM:console /OUT:t2.exe @C:\DOCUME~1\Brilly\LOCALS~1
\Temp\nma02300.
LINK : warning LNK4001: no object files specified; libraries used
LINK : warning LNK4068: /MACHINE not specified; defaulting to IX86
LINK : error LNK2001: unresolved external symbol _mainCRTStartup
t2.exe : fatal error LNK1120: 1 unresolved externals
NMAKE : fatal error U1077: 'link' : return code '0x460'
Stop.