为什么链接时老是出错?

[KingI]

当我打开一个win32程序文件编译时没错,可是链接时就会出现下面的错误,
但我新建一个win32程序后,把代码复制到里面再编译链接, 就没错了,这是咋回事呢?
--------------------Configuration: win - Win32 Debug--------------------
Linking...
LIBCD.lib(crt0.obj) : error LNK2001: unresolved external symbol _main
Debug/win.exe : fatal error LNK1120: 1 unresolved externals
Error executing link.exe.

win.exe - 2 error(s), 0 warning(s)
------------------------------------------------------------------------

这是源码:
#include <windows.h>

LRESULT CALLBACK Win(HWND hWnd, UINT iMsg, WPARAM wParam, LPARAM lParam);

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, PSTR szCmdLine, int iShowCmd)
{
WNDCLASS wndclass;
static TCHAR NAME[]="Windows";

wndclass.cbClsExtra=0;
wndclass.cbWndExtra=0;
wndclass.hbrBackground=(HBRUSH)GetStockObject(WHITE_BRUSH);
wndclass.hCursor=LoadCursor(NULL, IDC_ARROW);
wndclass.hIcon=LoadIcon(NULL, IDI_APPLICATION);
wndclass.hInstance=hInstance;
wndclass.lpfnWndProc=Win;
wndclass.lpszClassName=NAME;
wndclass.lpszMenuName=NULL;
wndclass.style=CS_HREDRAW | CS_VREDRAW;

if(!RegisterClass(&wndclass)) {
MessageBox(NULL, TEXT("Must run in Windows NT!"), TEXT("Error"), MB_OK);
return 0;
}

HWND hWnd1=CreateWindow(NAME,
TEXT("Hello Windows1"),
WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT,
CW_USEDEFAULT,
CW_USEDEFAULT,
CW_USEDEFAULT,
NULL,
NULL,
hInstance,
NULL);


ShowWindow(hWnd1, iShowCmd);
UpdateWindow(hWnd1);

MSG msg;

while (GetMessage(&msg, NULL, 0 ,0)) {
TranslateMessage(&msg);
DispatchMessage(&msg);
}


return msg.wParam;
}

LRESULT CALLBACK Win(HWND hWnd, UINT iMsg, WPARAM wParam, LPARAM lParam)
{
HDC hdc;
PAINTSTRUCT ps;
RECT rect;

switch(iMsg) {

case WM_PAINT :

hdc=BeginPaint(hWnd, &ps);

GetClientRect(hWnd, &rect);

DrawText(hdc, TEXT("Hello Boy!"), -1, &rect, DT_SINGLELINE | DT_CENTER | DT_VCENTER);

EndPaint(hWnd, &ps);

return 0;
case WM_DESTROY :

PostQuitMessage(0);
return 0;
}

return DefWindowProc(hWnd, iMsg, wParam, lParam);
}

[rageliu]

工程设置不对

[handsomerun]

类型错了
建个win32的工程，不要建console工程

[rageliu]

请确定工程设置project settings里Link中的Project Options中的/subsystem:为windows
如果不是请改为windows

[KingI]

高手啊, 搞定了, 谢谢:)