windowss2000大疑难！

BOOL CxxxApp::InitInstance()
{
.................
    DWORD (__stdcall *Reg)(DWORD ,DWORD);
    Reg=(DWORD ( __stdcall *)(DWORD,DWORD))GetProcAddress(GetModuleHandle("KERNEL32.DLL"),"RegisterServiceProcess");
    (*Reg)(NULL,1);
.................
} BOOL CXXXDlg::OnInitDialog()
{

ModifyStyleEx(WS_EX_APPWINDOW,WS_EX_TOOLWINDOW);

return TRUE;  // return TRUE  unless you set the focus to a control
}