弹出对话框置于顶层

BOOL CDlgDefaultList::OnInitDialog()
{
 CDialog::OnInitDialog();
 HWND   client_Hwnd=this->GetSafeHwnd();
 ::SetForegroundWindow(client_Hwnd);
 ::SetWindowPos(client_Hwnd,HWND_TOPMOST,0,0,0,0,SWP_NOMOVE|SWP_NOSIZE);  

}