Emergency. problems in serial communication

[wk_vigorous]

Hi, guys I use MSComm control to write a serial port communication routine. But the event "OnComm" don't response. And I have set RThreshold and SThreshold 1. It 's correct when I send out a character, the OnComm event should response, But it not. What do u think of that? Expect some serial communication specialists' idea. Thank a lot vigorous

[Heath Stewart]

This has nothing to do with serial communications (unless, of course, the serial device is not responding); it has to do with the COM control (it's receiving data and firing events). Make sure you've attached an EventHandler to the MSComm.OnComm event:

msComm1.OnComm += new EventHandler(this.OnComm);

If you haven't attached an event handler, your event handler will not be fired (it's a callback). For more information about interop'ing the MSComm control, read http://www.devhood.com/tutorials/tutorial_details.aspx?tutorial_id=320[^] from a dev site I haunted long ago.

Microsoft MVP, Visual C# My Articles

[Nick Parker]

Heath Stewart wrote: from a dev site I haunted long ago Ah, the old days. :sigh: - Nick Parker
My Blog | My Articles

[Heath Stewart]

Nick Parker wrote: Ah, the old days. :sigh: Are you nuts? :) DevHood wasn't very good. CodeProject is much better, despite the connection problems lately.

Microsoft MVP, Visual C# My Articles