How to check for a free serial port?

[sqa]

Hi, is there a possibility to check for a free serial port?

If yeas, then how can I do it?

Thanks a lot

[stormbreaker]

Use the following code:

$RESULT = _WinAPI_CreateFile(".COM10", 2, 2)
If $RESULT = 0 then
  msgbox(0, "", "Port 10 is not free")
  else
  msgbox(0, "", "Port 10 is free")
  EndIf

[sqa]

Thanks a lot. Lots to learn.