what is the value for IOCTL_SERIAL_GET_COMMSTATUS
I am trying to make a call using this value but am unable to find the number for this or the reference I would need to put in to the "using" clause so my program would know what it is.
Are these values listed anywhere?
Are these values listed anywhere?
kaufmed
According to this file, is a macro function.
ASKER
Do you know how I could use the following code to clear any pending communication errors?
C# Signature:
[DllImport("kernel32.dll", ExactSpelling = true, SetLastError = true, CharSet = CharSet.Auto)]
static extern bool DeviceIoControl(IntPtr hDevice, uint dwIoControlCode,
IntPtr lpInBuffer, uint nInBufferSize,
IntPtr lpOutBuffer, uint nOutBufferSize,
out uint lpBytesReturned, IntPtr lpOverlapped);ASKER CERTIFIED SOLUTION
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ASKER
That looks good although when I run the code the comm port cannot be opened as (according to getlasterror) "The system cannot find the file specified".
This may be due to using a usb to serial adaptor.
I will leave this question open for another day while I try and find the solution to this, and then assign the points to you.
This may be due to using a usb to serial adaptor.
I will leave this question open for another day while I try and find the solution to this, and then assign the points to you.
ASKER
Thanks for your help. It seams OK if you only use Com1