Tech Support > Microsoft Windows > Drivers > unknow value to IOCTL_SERIAL_SET_HANDFLOW
unknow value to IOCTL_SERIAL_SET_HANDFLOW
Posted by mlc on October 3rd, 2003


I am tracing the serial port activity of an application with Portmon and am
getting (in failure cases) (SERIAL_HANDFLOW struct) of ControlHandShake
= 0 and FlowReplace = 0. These values are not defined in ntddser.h. Can
anyone tell me what these values mean?