Here I am again with a new problem on acessing MS Excel with QT, this time involving threads.
I have the folowing code that perform some Excel actions (I've "posted":http://developer.qt.nokia.com/forums/viewthread/13656/ this code regarding another problem before):
@{
QAxObject* excel = new QAxObject( "Excel.Application", 0 );
QAxObject* workbooks = excel->querySubObject( "Workbooks" );
QAxObject* workbook = workbooks->querySubObject( "Open(const QString&)", "C:\Users\LocalDev\teste.xls" );
QAxObject* sheets = workbook->querySubObject( "Worksheets" );

sheets->dynamicCall("Add()");
QAxObject* sheet = sheets->querySubObject( "Item( int )", 1 );
sheet->setProperty("Name","Nova Planilha");

QAxObject * range = sheet->querySubObject("Cells( int, int)",1,1);
range->setProperty("Value", QVariant(1234));

QAxObject * shapes = sheet->querySubObject("Shapes");
shapes->dynamicCall("AddPicture( QString&, bool, bool, double, double, double, double","C:\\Users\\LocalDev\\Pictures\\cvrd1.png",true,true,100,100,70,70);

excel->setProperty("DisplayAlerts", false);
excel->dynamicCall("Save()");

//workbook->dynamicCall("Close()");
//excel->dynamicCall("Quit()");

workbook->dynamicCall("Close (Boolean)", true);
excel->dynamicCall("Quit (void)");

delete shapes;
delete range;
delete sheet;
delete sheets;
delete workbook;
delete workbooks;
delete excel;

}@

As my specifc code may take a long time to finalize I decided to run it in a separate thread. For this task, I subclassed a QThread class and put this code inside the method "run()" of my new inherited class.

When executing the code, if I call the "run()" method of my class directly (this way not executing as a thread) then the code works fine, but if I call the method "start()" (to execute as a thread) then it breaks at line 4 (while trying to open the file) with a popup message reporting an "Exception Triggered". The popup message says:

"The inferior stopped because it triggered an exception.
Stopped in thread 9 by: Exception at 0x45728a, code: 0x0000005, read access violation at:0x0, flags=0x0"

Well, I can't understand why this code does not execute correctly as a separate thread. I may be doing something silly and as I'm not that experienced with QT I'm asking if someone could help me, please.

Thanks for the attention.

Leo