private bool SetDCBState(IntPtr hComDevice)
{
if ( hComDevice.ToInt32() <= 0)
{
return false;
}
try
{
DCB lpDCB = new DCB();
NativeMethods.GetCommState(hComDevice, ref lpDCB);
if (m_BaudRate != SerialBaudRate.brCustom)
{
lpDCB.BaudRate = (int)m_BaudRate;
}
else
{
lpDCB.BaudRate = m_CustomBaudRate;
}
lpDCB.ByteSize = (byte)m_DataWidth;
lpDCB.StopBits = (byte)m_StopBits;
lpDCB.Parity = (byte)m_ParityBits;
lpDCB.Flags = 1;
if (m_EnableDTROnOpen)
{
lpDCB.Flags |= 0x10;
}
if (m_EnableRTSOnOpen)
{
lpDCB.Flags |= 0x1000;
}
switch (m_HwFlowControl)
{
case SerialHardwareFlowControl.hfRTS:
lpDCB.Flags |= 0x1000;
break;
case SerialHardwareFlowControl.hfRTSCTS:
lpDCB.Flags = (lpDCB.Flags | 4) | 0x2000;
break;
}
switch (m_SwFlowControl)
{
case SerialSoftwareFlowControl.sfXONXOFF:
lpDCB.Flags = (lpDCB.Flags | 0x100) | 0x200;
break;
}
lpDCB.XonChar = '\x0011';
lpDCB.XoffChar = '\x0013';
return (NativeMethods.SetCommState(hComDevice, ref lpDCB) != 0);
}
catch
{
return false;
}
}
internal static extern int SetCommState(IntPtr hCommDev, ref DCB lpDCB);