   COM ports in windows.
  Does anyone know how to open COM-ports in windows without blocking the port so that other programs can open the port for reading as well. If I open the port using fopen("COM2:", "r") no other program can access it until I've closed the port. There are commercial programs that can "split" the serial port so I know it should be possible to accomplish. I am using Visual C++ and programming against Windows CE.Thanks in advance.   