Undeclared identifier: 'dtrDisabled'

VCL TMS Async
1

Hi,

 
In my program a have this line:
Serial.FlowControl.ControlDtr := dtrDisabled;
 
Unfortunally i get this error message on the above line
E2003 Undeclared identifier: 'dtrDisabled'
 
What is causing this error, in a demo this line is also used.
 
Frank.
2

Please add the unit vaPrst to your uses list

3

Thanks this solved the problem.

After a ctrl + mouseclick the vaPrst unit showed up, so i should have known this myself.
 
Maybe it is a good idea to update the help for this component.
It is very outdated, i think it is written14 years ago.....!
 
Thanks, Frank.