Delete a row from Excel

void CTimerDlg::OnOK()
{//follow Q178749 to new class from typelib (For Excel 2003, it is excel.exe)
try
{
_Application app; // app is an _Application object.
_Workbook book; // More object declarations.
_Worksheet sheet;
Workbooks books;
Worksheets sheets;
Range range; // Used for Microsoft Excel 97 components.
LPDISPATCH lpDisp; // Often reused variable.
COleVariant
covTrue((short)TRUE),
covFalse((short)FALSE),
covOptional((long)DISP_E_PARAMNOTFOUND, VT_ERROR);
if(!app.CreateDispatch("Excel.Application"))
{
AfxMessageBox("Couldn't CreateDispatch() for Excel");
return;
}
app.SetVisible(TRUE);
lpDisp = app.GetWorkbooks(); // Get an IDispatch pointer.
ASSERT(lpDisp);
books.AttachDispatch(lpDisp); // Attach the IDispatch pointer
// to the books object.
lpDisp = books.Open("D:\\Onega\\Book2.xls", // Test.xls is a workbook.
covOptional, covOptional, covOptional, covOptional, covOptional,
covOptional, covOptional, covOptional, covOptional, covOptional,
covOptional, covOptional, covOptional, covOptional ); // Return Workbook's IDispatch
// pointer.
book.AttachDispatch( lpDisp );
lpDisp = book.GetSheets();
ASSERT(lpDisp);
sheets.AttachDispatch(lpDisp);
lpDisp = sheets.GetItem( COleVariant((short)(1)) );
ASSERT(lpDisp);
sheet.AttachDispatch(lpDisp);
// Delete Row of A13, Onega(www.fruitfruit.com)
// VC6.0 SP6, Excel2003
lpDisp = sheet.GetRange(COleVariant("A13"), COleVariant("A13"));
range.AttachDispatch(lpDisp);
lpDisp = range.GetEntireRow();
Range entire_row;
entire_row.AttachDispatch(lpDisp);
long xlUp = -4162;
entire_row.Delete(COleVariant(xlUp));
book.Save();
app.Quit();
} // End of processing.

catch(COleException *e)
{
char buf[1024]; // For the Try...Catch error message.
sprintf(buf, "COleException. SCODE: %08lx.", (long)e->m_sc);
::MessageBox(NULL, buf, "COleException", MB_SETFOREGROUND | MB_OK);
}
catch(COleDispatchException *e)
{
char buf[1024]; // For the Try...Catch error message.
sprintf(buf,
"COleDispatchException. SCODE: %08lx, Description: \"%s\".",
(long)e->m_wCode,(LPSTR)e->m_strDescription.GetBuffer(512));
::MessageBox(NULL, buf, "COleDispatchException",
MB_SETFOREGROUND | MB_OK);
}
catch(...)
{
::MessageBox(NULL, "General Exception caught.", "Catch-All",
MB_SETFOREGROUND | MB_OK);
}
}