Bob Blick wrote:
>> Is there a way to control the DTR and RTS lines directly? Say, if I 
>> wanted
>> to write a simple test app that had three buttons:
>>
>> PORT ON/OFF
>> DTR ON/OFF
>> RTS ON/OFF
>
> Hi Vitaliy,
>
> Drop an ApdComPort onto your form. It'll default to the name
> ApdComPort1. To open the port, ApdComPort1.Open := True. To wiggle DTR,
> ApdComPort1.DTR := False (or True as you decide). Same for RTS,
> ApdComPort1.RTS := False.
>
> So drop some buttons on your form and make their actions toggle True and
> False on the items you want to control.
>
> If you don't choose a com port ahead of time, or the com port you have
> chosen is not valid, when you open the port it'll automatically pop up a
> chooser at run time.
>
> Easy!

Wow, that does sound super-easy!

I guess my problem is that I started by reading the Developer's Guide, The 
description of the COM port was very brief, and gave me the impression that 
it didn't give the user much flexibility.

I looked up the component in Async's help file, and it has everything I need 
to know. Thanks Bob!

By the way, how do you add third party help files to the help menu? I have a 
feeling that I did it at some point in the past, but I can't remember how to 
do it now.

Also, are there any good mailing lists or forums for Delphi programmers 
(sort of like Delphi PicList)?  :-)

Thanks again for your help, Async is exactly what I was looking for.

Best regards,

Vitaliy


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