WinCC WinCC user archiving production operation records.

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I'm using wincc 7.5 now ，I want to use the C script from the wincc documentation to create an operation log. but , I don't understand how to set the archive control to display data.

#include "apdefap.h"

void UAWriteToArchive1(const char *object,const char* str_event)

{

UAHCONNECT hConnect = 0;

UAHARCHIVE hArchive = 0;

LONG IndexArchive;

LONG FieldLength;

LONG FieldType;

LONG NumberOfFields;

LONG Index;

float FloatValue;

double DoubleValue;

long IntValue;

char StringField[255];

SYSTEMTIME SysDate;

//******* Connect to Component User Archives ****************************

if (uaConnect( &hConnect ) == FALSE )

{

printf("uaConnect error: %d\n", uaGetLastError() );

return;

}

if (hConnect == NULL)

{

printf("Handle UAHCONNECT equals NULL\n" );

return;

}

//******* Connect to Archive via Name ****************************

if (uaQueryArchiveByName( hConnect, "F_1", &hArchive ) == FALSE )

{

printf("uaQueryArchive Error: %d\n", uaGetLastError() );

goto finish;

}

//******* Opens Archive ******************************************************

if ( uaArchiveOpen( hArchive ) == FALSE )

{

printf("uaArchive Open Error\n" );

goto finish;

}

//******* Get Number of Fields **********************************************

NumberOfFields = uaArchiveGetFields( hArchive );

printf("Number of Fields = %u\n", NumberOfFields );

//******* Read Last Data Set ************************************************

if (uaArchiveMoveLast( hArchive ) == TRUE )

printf("Number of Fields = %u\n", NumberOfFields );

else

{

printf("uaArchiveMoveLast Error: %d\n", uaGetLastError() );

goto finish;

}
//******* Move to First Register *****************************
//******* Write into Data Fields *********************************************

IntValue = 105;//RGB for darkgray

strcpy(StringField, "darkgray" );

GetSystemTime( &SysDate );

for ( Index = 1; Index < NumberOfFields; Index++ )

{

printf("Data of Field %u: \n", Index );

FieldType = uaArchiveGetFieldType( hArchive, Index );

switch ( FieldType )

{

case UA_FIELDTYPE_INTEGER :

printf("Field Type = Integer\n");

if (uaArchiveSetFieldValueLong ( hArchive, Index, IntValue ) == TRUE )

printf( "Field Value = %u\n", IntValue );

else

printf("Error callinguaArchiveSetFieldValueLong: %d\n", uaGetLastError() );

break;

case UA_FIELDTYPE_FLOAT :

printf("Field Type = Float\n");

if (uaArchiveSetFieldValueFloat ( hArchive, Index, FloatValue ) == TRUE )

printf("Field Value = %f\n", FloatValue );

else

printf("Error callinguaArchiveSetFieldValueFloat: %d\n", uaGetLastError() );

break;

case UA_FIELDTYPE_DOUBLE :

printf("Field Type = Double\n");

if (uaArchiveSetFieldValueDouble (hArchive, Index, DoubleValue ) == TRUE )

printf("Field Value = %g\n", DoubleValue );

else

printf("Error calling uaArchiveSetFieldValueDouble: %d\n", uaGetLastError() );

break;

case UA_FIELDTYPE_STRING :

if( Index ==1)
{
if (uaArchiveSetFieldValueString ( hArchive, Index, object ) == TRUE )

printf("Field Value = %s\n", object );

else

printf("Error callinguaArchiveSetFieldValueString: %d\n", uaGetLastError() );

}

else
{

if (uaArchiveSetFieldValueString ( hArchive, Index, str_event) == TRUE )

printf("Field Value = %s\n",str_event );

else

printf("Error callinguaArchiveSetFieldValueString: %d\n", uaGetLastError() );


}
printf("Field Type = String\n");


break;

case UA_FIELDTYPE_DATETIME :

printf("Field Type = Date & Time\n");

if (uaArchiveSetFieldValueDate ( hArchive, Index, &SysDate ) == TRUE )

printf("%d.%d.%d\n ",SysDate.wDay, SysDate.wMonth, SysDate.wYear );

else

printf("Error calling uaArchiveSetFieldValueLong: %d\n", uaGetLastError() );

break;

case -1 :

default:

printf("Error executing uaArchiveSetFieldType\n");

}

FieldLength = uaArchiveGetFieldLength( hArchive, Index );

if ( FieldLength != -1 )

printf("Field Length = %u\n", FieldLength );

else

printf("Error executing uaArchiveGetFieldLength\n");

}

// ******* Update Archive *******************************************

/*if (uaArchiveUpdate(hArchive) == FALSE )

{

printf("uaArchiveUpdate Error:\n" );

}*/

//******* Close all handles and connections ***************************

finish:;

//******* Close Archive *******************************************************

if( NULL != hArchive )

{

if (uaArchiveClose ( hArchive ) == FALSE )

{

printf("error on closing archive\n" );

}

}

//****** Release Connection to Archive *************************************

if( NULL != hArchive )

{

if (uaReleaseArchive ( hArchive ) == FALSE )

{

printf("error on releasing archive\n" );

}

hArchive = 0;

}

//******* Disconnect to Component User Archives *************************

if( NULL != hConnect )

{

if (uaDisconnect ( hConnect ) == FALSE )

{

printf("error on disconnection\n" );

}

hConnect = 0;

}

}