private void InternalClose()
{
Win32Com.CancelIo(m_hPort);
if (m_RxThread != null)
{
m_RxThread.Abort();
m_RxThread.Join(100);
m_RxThread = (Thread)null;
}
Win32Com.CloseHandle(m_hPort);
if (m_ptrUWO != IntPtr.Zero)
{
Marshal.FreeHGlobal(m_ptrUWO);
}
}
private void InternalClose()
{
Win32Com.CancelIo(hPort);
if (rxThread != null)
{
rxThread.Abort();
rxThread.Join(100);
rxThread = (Thread)null;
}
Win32Com.CloseHandle(hPort);
if (ptrUWO != IntPtr.Zero)
{
Marshal.FreeHGlobal(ptrUWO);
}
stateRTS = 2;
stateDTR = 2;
stateBRK = 2;
online = false;
}
public CommBase.PortStatus IsPortAvailable(string s)
{
IntPtr file = Win32Com.CreateFile(s, 3221225472U, 0U, IntPtr.Zero, 3U, 1073741824U, IntPtr.Zero);
if (file == (IntPtr)(-1))
{
if ((long)Marshal.GetLastWin32Error() == 5L)
{
return(CommBase.PortStatus.unavailable);
}
file = Win32Com.CreateFile(AltName(s), 3221225472U, 0U, IntPtr.Zero, 3U, 1073741824U, IntPtr.Zero);
if (file == (IntPtr)(-1))
{
return((long)Marshal.GetLastWin32Error() == 5L ? CommBase.PortStatus.unavailable : CommBase.PortStatus.absent);
}
}
Win32Com.CloseHandle(file);
return(CommBase.PortStatus.available);
}
public static PortStatus IsPortAvailable(int iComPort)
{
string comPort = "COM" + iComPort.ToString();
IntPtr file = Win32Com.CreateFile(comPort, 3221225472U, 0U, IntPtr.Zero, 3U, 1073741824U, IntPtr.Zero);
if (file == (IntPtr)(-1))
{
if ((long)Marshal.GetLastWin32Error() == 5L)
{
return(PortStatus.Unavailable);
}
file = Win32Com.CreateFile(AltName(comPort), 3221225472U, 0U, IntPtr.Zero, 3U, 1073741824U, IntPtr.Zero);
if (file == (IntPtr)(-1))
{
return((long)Marshal.GetLastWin32Error() == 5L ? PortStatus.Unavailable : PortStatus.Absent);
}
}
Win32Com.CloseHandle(file);
return(PortStatus.Available);
}
