[Mingw-users] Complie Windows Program error

[joseph <jos...@ho...>]

I just install MingGW-2.0.0-1.exe and try to complie the following =
program. and want to complie Windows Program

 #include <windows.h>

int WINAPI WinMain (HINSTANCE hInstance,=20
                        HINSTANCE hPrevInstance,=20
                        PSTR szCmdLine,=20
                        int iCmdShow)=20
   {
      MessageBox (NULL, "Hello", "Hello Demo", MB_OK);
      return (0);
   }
              =20
I want to create a Windows executable hello.exe,=20

  gcc -c hello.c


But have a messsge :hello.c:2:21: windows.h : No Such file or =
directory.The windows.h file in the directory c:\win\api,  I also have a =
path c:\win\apiWhy ???