try/catch

Lisa Pearlson · Joined: 15 Aug 2007 Posts: 446

Hi,

My debug output shows an exception when using CArchive::ReadString() beyond
the end of the file.
I thought that by handling exceptions, I could prevent the debug output for
them:

CFile f;
if (f.Open(_T("\\Temp\\test.txt"), CFile::modeRead)) {
CArchive ar(&f, CArchive::load);
CString s;
try {
while (ar.ReadString(s)) {
DEBUGMSG(1, (_T("ReadString: %s\r\n"), s));
}
} catch (CArchiveException* e) {
e->ReportError(); // never gets called!
e->Delete();
}
}

However, output is still shown for CArchiveException::endOfFile, and my
exception handler is never called.
Yes, I provided the /EHsc (and tried deprecated /GX) compiler options, set
via Project Settings/C++/Exception Handling in VS 2005.

Any clues?

Lisa

Archived from group: microsoft>public>pocketpc>developer

dbgrick · Joined: 15 Aug 2007 Posts: 173

Try putting your CArchive ar(...) in your try catch. The error may be at the
archive constructor.

Regards,
Rick D.

"Lisa Pearlson" wrote:

> Hi,
>
> My debug output shows an exception when using CArchive::ReadString() beyond
> the end of the file.
> I thought that by handling exceptions, I could prevent the debug output for
> them:
>
> CFile f;
> if (f.Open(_T("\\Temp\\test.txt"), CFile::modeRead)) {
> CArchive ar(&f, CArchive::load);
> CString s;
> try {
> while (ar.ReadString(s)) {
> DEBUGMSG(1, (_T("ReadString: %s\r\n"), s));
> }
> } catch (CArchiveException* e) {
> e->ReportError(); // never gets called!
> e->Delete();
> }
> }
>
> However, output is still shown for CArchiveException::endOfFile, and my
> exception handler is never called.
> Yes, I provided the /EHsc (and tried deprecated /GX) compiler options, set
> via Project Settings/C++/Exception Handling in VS 2005.
>
> Any clues?
>
> Lisa
>
>
>
>

James Hayhurst · Joined: 28 Sep 2007 Posts: 3

Does it throw an actual object, a ref to an object or a pointer to an
object?

"Lisa Pearlson" wrote in message @TK2MSFTNGP03.phx.gbl...
> Hi,
>
> My debug output shows an exception when using CArchive::ReadString()
> beyond
> the end of the file.
> I thought that by handling exceptions, I could prevent the debug output
> for
> them:
>
> CFile f;
> if (f.Open(_T("\\Temp\\test.txt"), CFile::modeRead)) {
> CArchive ar(&f, CArchive::load);
> CString s;
> try {
> while (ar.ReadString(s)) {
> DEBUGMSG(1, (_T("ReadString: %s\r\n"), s));
> }
> } catch (CArchiveException* e) {
> e->ReportError(); // never gets called!
> e->Delete();
> }
> }
>
> However, output is still shown for CArchiveException::endOfFile, and my
> exception handler is never called.
> Yes, I provided the /EHsc (and tried deprecated /GX) compiler options, set
> via Project Settings/C++/Exception Handling in VS 2005.
>
> Any clues?
>
> Lisa
>
>
>

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