>The OnComm event fires when data is received.
Not for me :-)
I create simple form.
Add MsComm, CommandButton, TextBox.
form.init()
...set mscomm properties
CommandButton.Click()
thisform.TextBox1.value=thisform.mscomm.Input()
MsComm.OnComm()
wait "have data, Pavel" wind nowa

and then send "hello" into CommPort ...
CommandButton.click() say "hello" into TextBox, but OnComm NOT fired.
Pavel