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TIdIOHandler.ReadBytes Method

TIdIOHandler Class   TIdIOHandler Members
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Perform a read request for IOHandler.

procedure ReadBytes(
    var VBuffer: TIdBytes; 
    AByteCount: Integer; 
    AAppend: boolean = true
); virtual;
Parameters
Description
VBuffer
Storage for values read from the IOHandler.
AByteCount
Number of bytes expected in the read request.
AAppend
Indicates if values are appended to exisitng data in the buffer.

ReadBytes is a virtual procedure used to perform a read request for the IOHandler.

VBuffer is the variable argument used to store values read from the data source for the IOHandler connection.

AByteCount indicates the number of byte values expected for the read request. When AByteCount contains 0 (zero), no data is read from the data source for the IOHandler. when AByteCount contains -1, data is read from the data source until it is disconnected or the ReadTimeout value has elapsed.

ReadBytes reads data from the IOHandler data source until the number of bytes in AByteCount has been accumulated in InputBuffer, or CheckForDisconnect interrupts the read request.

On successful completion of the read request, values are extracted from InputBuffer into VBuffer.

AAppend indicates that values extracted from the input buffer should be appended to existing data in VBuffer. When AAppend is False, any values in VBuffer are discarded during extraction of data from InputBuffer.

TIdBytes

TIdIOHandler.InputBuffer

TIdIOHandler.CheckForDisconnect

TIdIOHandler Class
TIdIOHandler Members
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Referred to:




http://www.indyproject.org/docsite/html/frames.html?frmname=
topic&frmfile=TIdIOHandler_ReadBytes@TIdBytes@Integer@boolean.html
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