code: def execute(self, command):
          
          pData = c_char_p(command)
          cbData = DWORD(len(command) + 1)
          hDdeData = DDE.ClientTransaction(pData, cbData, self._hConv, HSZ(), CF_TEXT, XTYP_EXECUTE, TIMEOUT_ASYNC, LPDWORD())
          if not hDdeData:
              raise DDEError("Unable to send command", self._idInst)
          DDE.FreeDataHandle(hDdeData)
docs: Execute a DDE command.