Structure of the Pen Calibration Applet Source Code

The functional structure of the pen calibration DLL is reflected in the entry points that it exports:

EXPORTS
WEP                @1 RESIDENTNAME
CalDlg             @2
Calibrate          @3
VerifyChangesDlg   @4
ErrMsgDlg          @5

The pen calibration application

Presents a calibration dialog to the user on the non-opaque tablet which prompts the user to touch targets displayed on the tablet.
Uses the touch input information to fill in a DRV_CALBSTRUCT data structure for use by the pen Unidriver.
Presents a calibration changes dialog and error message dialog to the user, if necessary.

The source modules that make up the pen calibration applet source code are listed in the following table along with a description of each module.

Module	Description
CAL.H	General header file for PENCAL.DLL
CALDLG.C	Conducts the calibration dialog with the user and writes the new configuration information to the pen driver key in the Registry.
CALERR.C	Calibration error handling routine.
CALERR.H	Defines the error messages that can be output by PENCAL.DLL; header file for CALERR.C.
CALINIT.C	Contains LibMain and WEP functions.
MAKEFILE	16-bit makefile for the DLL.
PENCAL.DEF	Definitions file.
PENCAL.DLG	Defines the pen calibration dialog box.
PENCAL.RC	Resources file.
PENCAL.RCV	Contains version strings read by the operating system.
RES.H	Resource header file for PENCAL.DLL.
UMULDIV.ASM	Multiplies signed 16.16 by 16.16 and returns 16.16 result.
_CALDLG.H	Dialog header file for PENCAL.DLL