[Overview][Types][Classes][Procedures and functions][Variables][Index] | Reference for unit 'process' (#fcl)

# TProcess.Stderr

Stream connected to standard diagnostic output of the process.

## Declaration

Source position: process.pp line 130

`public property TProcess.Stderr: TInputPipeStream read FStderrStream;`

## Description

StdErr is a stream which is connected to the process' standard diagnostic output file handle (StdErr). Anything written to standard diagnostic output by the created process can be read from this stream.

The StdErr stream is only instantiated when the poUsePipes flag is used in Options.

The Output stream equals the Output when the poStdErrToOutPut flag is used in Options.

Note that reading from the stream may cause the calling process to be suspended when the created process is not writing anything to standard output, or to cause errors when the process has terminated.

## See also

TProcess.InPut |  | Stream connected to standard input of the process.
TProcess.Output |  | Stream connected to standard output of the process.
TProcess.Options |  | Options to be used when starting the process.
TProcessOption |  | Options to be used when a process is started.

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