Fired when data (complete lines) come in through stderr.
type TStderrEvent = procedure ( Sender: TObject; Text: String; TextB: TBytes; EOL: Boolean ) of Object;
property OnStderr: TStderrEvent read FOnStderr write FOnStderr;
The Stderr event is fired every time the process on the remote host outputs a line in its error output. The incoming data is provided through the Text parameter.
When the error stream is closed by the server, a string containing only one NULL character is delivered through this event.