在工程的cpp的winmain中加入：

if(g_bIsRunAgain)
    {
  AnsiString strPath;
        STARTUPINFO StartInfo;
        PROCESS_INFORMATION procStruct;
        memset(&StartInfo, 0, sizeof(STARTUPINFO));
        StartInfo.cb = sizeof(STARTUPINFO);
        strPath = Application->ExeName;
        if(!::CreateProcess(
                (LPCTSTR) strPath.c_str(),
                NULL,
    NULL,
                NULL,
                FALSE,
                NORMAL_PRIORITY_CLASS,
                NULL,
                NULL,
                &StartInfo,
                &procStruct))
            return 0;
    }

。。。

void __fastcall TfmMain::WMHotKey(TWMHotKey &Message)
{
 if(Message.HotKey==HotKeyId_reboot)
 {
  can_Close = true;
  g_bIsRunAgain = true;
  Close();
 }
}