Name
read_io_channelT_read_io_channelReadIoChannelread_io_channelReadIoChannelReadIoChannel — Read a value from the specified I/O channels.
read_io_channelread_io_channelReadIoChannelread_io_channelReadIoChannelReadIoChannel reads input values from the specified
transmission channels. The channels are passed in
IOChannelHandleIOChannelHandleIOChannelHandleIOChannelHandleIOChannelHandleIOChannelHandle and can be opened and configured by
open_io_channelopen_io_channelOpenIoChannelopen_io_channelOpenIoChannelOpenIoChannel, the values are returned in
ValueValueValueValueValuevalue. The parameter StatusStatusStatusStatusStatusstatus returns for each read
value in ValueValueValueValueValuevalue a quality message. The value 0
indicates that the corresponding value of ValueValueValueValueValuevalue could be
read. Any other status value depends on the interface. Please refer
to the interface-specific documentation in the directory
'doc/html/reference/io'"doc/html/reference/io""doc/html/reference/io""doc/html/reference/io""doc/html/reference/io""doc/html/reference/io" for further explanation.
- Multithreading type: reentrant (runs in parallel with non-exclusive operators).
- Multithreading scope: global (may be called from any thread).
- Processed without parallelization.
Handles of the opened I/O channels.
ValueValueValueValueValuevalue (output_control) tuple-array → HTupleHTupleHTupleVARIANTHtuple (integer / real / string) (int / long / double / string) (Hlong / double / HString) (Hlong / double / char*) (Hlong / double / BSTR) (Hlong / double / char*)
Read value.
If the parameters are valid, the operator
read_io_channelread_io_channelReadIoChannelread_io_channelReadIoChannelReadIoChannel returns the value 2 (H_MSG_TRUE). If necessary an
exception is raised. In this case, an extended error information may be
set and can be queried with the operator get_extended_error_infoget_extended_error_infoGetExtendedErrorInfoget_extended_error_infoGetExtendedErrorInfoGetExtendedErrorInfo.
open_io_channelopen_io_channelOpenIoChannelopen_io_channelOpenIoChannelOpenIoChannel,
set_io_channel_paramset_io_channel_paramSetIoChannelParamset_io_channel_paramSetIoChannelParamSetIoChannelParam
close_io_channelclose_io_channelCloseIoChannelclose_io_channelCloseIoChannelCloseIoChannel
write_io_channelwrite_io_channelWriteIoChannelwrite_io_channelWriteIoChannelWriteIoChannel,
query_io_devicequery_io_deviceQueryIoDevicequery_io_deviceQueryIoDeviceQueryIoDevice,
set_io_channel_paramset_io_channel_paramSetIoChannelParamset_io_channel_paramSetIoChannelParamSetIoChannelParam
Foundation