Carrol Touch Modular Flat Panel Specifications download pdf (Page 249)

Appendix E - Dynamic Link Library (DLL) Function Reference CARROLL TOUCH

E-12 Touch System Programmer’s Guide

SetCalibInfo (7)

Description

This function sets the calibration parameters that the driver uses to

convert raw touch coordinates to touch coordinates that correspond to

the 65535 x 65535 Windows virtual display screen. To calculate the

correct calibration parameter values, you must first get the raw touch

coordinates that correspond to the upper left and lower right corners of

the video image. This is typically done by displaying touch targets in

the corners and using the GetTouchStateandCoord function to get the

raw touch information. You then calculate the calibration parameters as

shown in the CalculateCalibInfo function and send them to the driver

via SetCalibInfo.

IMPORTS Statement in the Definition File

SetCalibInfo=MOUSE.7

Functions Prototype

void FAR PASCAL SetCalibInfo(LPSTR);

Data Structure and Parameter Variable

typedef struct tagCALIBINFO {

long int Xmag;

long int Xoff;

long int Ymag;

long int Yoff;

} CALIBINFO_TYPE calibinfo;

static CALIBINFO_TYPE calibinfo;

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Carrol Touch Modular Flat Panel Specifications Page 249