void main(int argc, char *argv[])
{
ESSG_STS_T sts = ESS_STS_NOERR;
ESSG_HGRID_T hGrid;
ESSG_HANDLE_T Handle;
ESSG_INIT_T InitStruct;
/* BEGIN: initialize grid handle and create a new grid */
InitStruct.ulVersion = ESSG_VERSION;
InitStruct.ulMaxRows = 1000;
InitStruct.ulMaxColumns = 200;
InitStruct.pfnMessageFunc = ESS_NULL;
InitStruct.pUserdata = ESS_NULL;
sts = EssGInit(&InitStruct, Handle);
if (sts != ESS_STS_NOERR)
return;
sts = EssGNewGrid(Handle, hGrid);
if (sts != ESS_STS_NOERR)
return;
/* END: initialize grid handle and create a new grid */
ESSG_DTTest(Handle, hGrid);
sts = EssGTerm(Handle);
}
void ESSG_DTTest(ESSG_HANDLE_T Handle, ESSG_HGRID_T hGrid)
{
ESSG_STS_T errsts,
sts = ESS_STS_NOERR;
ESSG_HLRO_T hLRO = 0;
ESSG_PPDATA_T ppDataIn;
/* ESSG_PPDATA_T ppDataOut; */
ESSG_RANGE_T rDataRangeIn,
rDataRangeOut;
ESSG_USHORT_T usCells;
ESSG_USHORT_T usState = 0;
ESSG_RANGE_T Range;
ESSG_PDTHINST_T pDTInst;
ESSG_STR_T ErrMesg;
ESSG_ULONG_T ErrSize = 255;
memset(&rDataRangeOut, 0, sizeof(ESSG_RANGE_T));
ErrMesg = malloc(255);
/* connect the grid to a database on the server */
sts = EssGConnect(hGrid, server, user, pwd, app, db, ESSG_CONNECT_DEFAULT);
if(sts == ESS_STS_NOERR)
{
ppDataIn = BuildTableForDrillThru (&rDataRangeIn);
DisplayOutput(ppDataIn, rDataRangeIn);
usCells = 1;
Range.ulRowStart = 1;
Range.ulColumnStart = 6;
Range.ulNumRows = 1;
Range.ulNumColumns = 1;
sts = EssGBeginDrillOrLink(hGrid, usCells, &Range, ESSG_OPT_ZOOM);
}
if(sts == ESS_STS_NOERR)
/* send the entire grid to define the query */
sts = EssGSendRows(hGrid, &rDataRangeIn, ppDataIn);
if(sts == ESS_STS_NOERR)
{
/* perform the drillorlink operation */
sts = EssGPerformOperation(hGrid, 0);
/* free the built data */
FreeTwoDim(ppDataIn, rDataRangeIn.ulNumRows);
}
if (sts ==ESS_STS_NOERR)
sts = EssGDTRequestDrillThrough(hGrid, usCells, &Range, &pDTInst);
if (sts == ESS_STS_NOERR)
{
/* Get the DT Info corresponding to the DT handle */
sts = ESSGDTGetInfo(pDTInst);
/* Set the password info for executing the drill through report */
sts = ESSGDTSetInfo(pDTInst);
/* determine the list of reports associated with the data cell range. */
sts = ESSGDTListReports(pDTInst);
/* Execute the report. Using index 0 for now as we have only one report */
sts = EssGDTExecuteReport(pDTInst, 0);
if ( sts ) /* Error Condition print error mesg */
errsts = EssDTAPIGetError(pDTInst, &sts, ErrMesg, ErrSize);
/* Get the headers for the report associated with the data cell range. */
sts = ESSGDTGetHeader(pDTInst);
if ( sts ) /* Error Condition print error mesg */
EssDTAPIGetError(pDTInst, &sts, ErrMesg, ErrSize);
/* Get the data for the report associated with the data cell range. */
sts = ESSGDTGetData(pDTInst);
if ( sts ) /* Error Condition print error mesg */
EssDTAPIGetError(pDTInst, &sts, ErrMesg, ErrSize);
}
sts = EssGDTEndDrillThrough(pDTInst);
}See the following functions for more information on Drill-Through: