qt - QAxObject -- not creating excel in right format -

i working qaxobject , able open existing file & read different sheets & cells.

but when creating new excel file using qaxobject. creating test_1.xls file. when open file gives me error. using ms-excel-2007 .

code :---

   qaxwidget excel_1("excel.application");    excel_1.setproperty("visible", false);     qaxobject * workbooks_1 = excel_1.querysubobject("workbooks");     workbooks_1->dynamiccall("add");    qaxobject * workbook_1 = excel_1.querysubobject("activeworkbook");    qaxobject * worksheets = workbook_1->querysubobject("worksheets");     excel_1.setproperty("displayalerts", 0);    workbook_1->dynamiccall("saveas (const qstring&)", qstring("d:\\temp\\test_1.xls"));    workbook_1->dynamiccall("close (boolean)", false);    excel_1.setproperty("displayalerts", 1);    excel_1.dynamiccall("quit (void)"); 

error message when try open file :-----

the file trying open diffrent format xls.  verify file corrupted or not want open file or not 

please suggest missing create .xls file in correct format ?

ok,i solved problem. because install office2007, "save" function save file in 2007 format, save "*.xls", format can not recognized correctly.

so solution is, use "saveas" save excel 2003 format.

how set excel column format though qt?

qlist<qvariant> lstparam; lstparam.append("d:\\temp\\test_1.xls"); lstparam.append(-4143); lstparam.append(""); lstparam.append(""); lstparam.append(false); lstparam.append(false); lstparam.append(1); lstparam.append(2); lstparam.append(false); lstparam.append(false); lstparam.append(false); lstparam.append(false);  workbook_1->dynamiccall("saveas(qvariant, qvariant, qvariant, qvariant, qvariant, qvariant, qvariant, qvariant, qvariant, qvariant, qvariant, qvariant)", lstparam);