Carrol Touch Modular Flat Panel Specifications download pdf (Page 185)

Appendix C - TAPI Function Reference CARROLL TOUCH

C-6 Touch System Programmer’s Guide

GetReports (2)

Description

If any reports are available from the touch system, this function

transfers them to the report buffer. The length (in bytes) of the reports

transferred to the report buffer is returned in CX.

Call with

AX = 2 (function number).

BX = Segment of report buffer.

CX = Size of report buffer (in bytes).

DX = Offset of report buffer.

Returns

AX = 2 (function number).

CX = Number of bytes transferred to the report buffer.

0 = No reports available - no bytes transferred.

nonzero = Reports were available - number of bytes

transferred to the report buffer.

Notes

The report buffer is an area of memory in the application program that

is dedicated to receiving Smart-Frame Protocol reports. One or several

reports may be sent to the report buffer. Only complete reports are sent

to the report buffer. No partial reports are sent.

The buffer size value passed in CX is the maximum number of bytes

that the TAPI driver writes to the report buffer. If the number of bytes

that the TAPI driver has available to write to this buffer is greater than

this value, the excess bytes are discarded.

It is recommended that the report buffer be at least 64 bytes long. Since

the TAPI driver transfers a maximum of 512 bytes to the report buffer,

the maximum report buffer size necessary is 512 bytes.

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Carrol Touch Modular Flat Panel Specifications Page 185