I' wrote a little device configuration utility in Delphi, using the Async 
Pro library. When I sent it to a customer, he reported that the "COM port 
options" menu hangs the program.

I tried the program on five different computers, and found that the only 
computers that had this problem were the ones with Bluetooth COM ports. I 
verified that these ports are causing the problem, by disabling them -- the 
program works correctly then.

The code for enumerating the ports is very simple, straight out of the Async 
Pro examples:

  for i := 1 to 64 do
    if IsPortAvailable(i) then
      cmbComPortNumber.Items.Add (IntToStr (i));

Any ideas?

Best regards,

Vitaliy

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