get_io_channel_paramT_get_io_channel_paramGetIoChannelParamGetIoChannelParamget_io_channel_param (算子名称)
名称
get_io_channel_paramT_get_io_channel_paramGetIoChannelParamGetIoChannelParamget_io_channel_param — Query specific parameters of I/O channels.
参数签名
描述
get_io_channel_paramget_io_channel_paramGetIoChannelParamGetIoChannelParamGetIoChannelParamget_io_channel_param queries settings of specific I/O
transmission channels. The query parameters are passed in
GenParamNameGenParamNameGenParamNameGenParamNamegenParamNamegen_param_name, the corresponding configuration values are
returned in GenParamValueGenParamValueGenParamValueGenParamValuegenParamValuegen_param_value. IOChannelHandleIOChannelHandleIOChannelHandleIOChannelHandleIOChannelHandleiochannel_handle specifies
the channels returned in open_io_channelopen_io_channelOpenIoChannelOpenIoChannelOpenIoChannelopen_io_channel for a specific
device instance.
Please check the directory doc/html/reference/io for
documentation about your specific I/O device interface, where all
supported channel-specific parameters are listed.
运行信息
- 多线程类型:可重入(与非独占操作符并行运行)。
- 多线程作用域:全局(可以从任何线程调用)。
- 未经并行化处理。
参数表
IOChannelHandleIOChannelHandleIOChannelHandleIOChannelHandleIOChannelHandleiochannel_handle (input_control) io_channel(-array) → HIOChannel, HTupleMaybeSequence[HHandle]HTupleHtuple (handle) (IntPtr) (HHandle) (handle)
Handles of the opened I/O channels.
GenParamNameGenParamNameGenParamNameGenParamNamegenParamNamegen_param_name (input_control) string(-array) → HTupleMaybeSequence[str]HTupleHtuple (string) (string) (HString) (char*)
Parameter names.
Default:
'param_name'
"param_name"
"param_name"
"param_name"
"param_name"
"param_name"
Suggested values:
'io_channel_name'"io_channel_name""io_channel_name""io_channel_name""io_channel_name""io_channel_name", 'param_name'"param_name""param_name""param_name""param_name""param_name"
GenParamValueGenParamValueGenParamValueGenParamValuegenParamValuegen_param_value (output_control) string-array → HTupleSequence[HTupleElementType]HTupleHtuple (string / integer / real / handle) (string / int / long / double / HHandle) (HString / Hlong / double / HHandle) (char* / Hlong / double / handle)
Parameter values.
结果
如果参数均有效，算子
get_io_channel_paramget_io_channel_paramGetIoChannelParamGetIoChannelParamGetIoChannelParamget_io_channel_param 返回值 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 该算子 get_extended_error_infoget_extended_error_infoGetExtendedErrorInfoGetExtendedErrorInfoGetExtendedErrorInfoget_extended_error_info.
可能的前置算子
open_io_channelopen_io_channelOpenIoChannelOpenIoChannelOpenIoChannelopen_io_channel
可能的后置算子
read_io_channelread_io_channelReadIoChannelReadIoChannelReadIoChannelread_io_channel,
write_io_channelwrite_io_channelWriteIoChannelWriteIoChannelWriteIoChannelwrite_io_channel
参考其它
open_io_channelopen_io_channelOpenIoChannelOpenIoChannelOpenIoChannelopen_io_channel,
query_io_devicequery_io_deviceQueryIoDeviceQueryIoDeviceQueryIoDevicequery_io_device,
set_io_channel_paramset_io_channel_paramSetIoChannelParamSetIoChannelParamSetIoChannelParamset_io_channel_param
模块
Foundation