Sends an extended function.
Some functions are not supported.
The supports for parameters, members of parameters and bits are as follows.
|
Parameters |
Members or Bits |
Supported or Not |
|
fdwFunc |
CLRDTR |
Yes |
|
CLRRTS |
Yes |
|
|
SETDTR |
Yes |
|
|
SETRTS |
Yes |
|
|
SETXOFF |
No |
|
|
SETXON |
No |
|
|
SETBREAK |
Yes |
|
|
CLRBREAK |
Yes |
Whether able to ON/OFF the RTS and DTR is affected by the Setting for DCB structure set with SetCommState function.
Please refer to the fDtrControl and fRtsControl on the DCB page of Microsoft help (MSDN).