Retrieving doc templates in MFC - visual-c++

Question

I am using MFC MDI application and i am adding two doc templates as shown in code below:
BOOL CEmuDiagnosticsClientApp::InitInstance()
{
INITCOMMONCONTROLSEX InitCtrls;
InitCtrls.dwSize = sizeof(InitCtrls);
// Set this to include all the common control classes you want to use
// in your application.
InitCtrls.dwICC = ICC_WIN95_CLASSES;
InitCommonControlsEx(&InitCtrls);
CWinAppEx::InitInstance();
// Initialize OLE libraries
if (!AfxOleInit())
{
AfxMessageBox(IDP_OLE_INIT_FAILED);
return FALSE;
}
AfxEnableControlContainer();
//Added new code
CMultiDocTemplate* pDocTemplate;
pDocTemplate = new CMultiDocTemplate(IDR_STRING_FILTERWINDOW,
RUNTIME_CLASS(CEmuDiagnosticsClientDoc),
RUNTIME_CLASS(CChildFrame), // custom MDI child frame
RUNTIME_CLASS(CFilterWindow));
if (!pDocTemplate)
return FALSE;
AddDocTemplate(pDocTemplate);
SetRegistryKey(_T("Local AppWizard-Generated Applications"));
LoadStdProfileSettings(4); // Load standard INI file options (including MRU)
InitContextMenuManager();
InitKeyboardManager();
InitTooltipManager();
CMFCToolTipInfo ttParams;
ttParams.m_bVislManagerTheme = TRUE;
theApp.GetTooltipManager()->SetTooltipParams(AFX_TOOLTIP_TYPE_ALL,
RUNTIME_CLASS(CMFCToolTipCtrl), &ttParams);
AddDocTemplate(new CMultiDocTemplate(IDR_STRING_SIGNALWINDOW,
RUNTIME_CLASS(CEmuDiagnosticsClientDoc),
RUNTIME_CLASS(CChildFrame), // custom MDI child frame
RUNTIME_CLASS(CSignalWindow)));
// create main MDI Frame window
CMainFrame* pMainFrame = new CMainFrame;
if (!pMainFrame || !pMainFrame->LoadFrame(IDR_MAINFRAME))
{
delete pMainFrame;
return FALSE;
}
m_pMainWnd = pMainFrame;
// Parse command line for standard shell commands, DDE, file open
CCommandLineInfo cmdInfo;
ParseCommandLine(cmdInfo);
// Dispatch commands specified on the command line. Will return FALSE if
// app was launched with /RegServer, /Register, /Unregserver or /Unregister.
if (!ProcessShellCommand(cmdInfo))
return FALSE;
// The main window has been initialized, so show and update it
pMainFrame->ShowWindow(m_nCmdShow);
pMainFrame->UpdateWindow();
return TRUE;
}
I am using this code to iterate over documents and get view classes's reference in my CMainFrame class.
CFilterWindow* p = NULL;
CSignalWindow* p1 = NULL;
for( POSITION pos = AfxGetApp()->GetFirstDocTemplatePosition(); pos != NULL; )
{
CDocTemplate* pTempl = AfxGetApp()->GetNextDocTemplate( pos );
for( POSITION pos1 = pTempl->GetFirstDocPosition(); pos!= NULL; )
{
CDocument* pDoc = pTempl->GetNextDoc( pos1 );
for( POSITION pos2 = pDoc->GetFirstViewPosition(); pos2 != NULL; )
{
CView* pView = pDoc->GetNextView( pos2 );
if( pView->IsKindOf( RUNTIME_CLASS(CFilterWindow) ) )
{
p = (CFilterWindow*)pView;
p->UpdateUI();
// Do what you need with the view...
}
else
{
p1 = (CSignalWindow*)pView;
p1->UpdateUI();
}
}
}
}
Problem is with loop for( POSITION pos2 = pDoc->GetFirstViewPosition(); pos2 != NULL; )
as pDoc->GetFirstViewPosition(); always returning NULL.
It is puzzling me why it is returning NULL.
Can anybody suggest where I am wrong?