TAsyncProcess.HandlePipeInput procedure
Implements asynchronous notifications during execution of the process.
Declaration
procedure HandlePipeInput(AData: PtrInt; AReasons: TPipeReasons)Arguments
AData | Data available on the input handle. |
AReasons | Reason the data was written for the handler. |
Description
HandlePipeInput is a procedure which implements support for
asynchronous notifications which occur during execution of the process.
HandlePipeInput is assigned using
AddPipeEventHandler when
Execute is called.
HandlePipeInput examines values in AReasons to determine the
action for the notification. When AReasons includes the value
prBroken, the pipe has been closed and UnhookPipeHandle
is called. When prDataAvailable is included in AReasons, the
OnReadData event handler is signalled (when assigned).
Use OnReadData to respond to arrival of data on the handle for the
process. Use NumBytesAvailable is determine the number of bytes
available.
See also
An experiment, built from development snapshots. Not the official Free Pascal or Lazarus documentation.