Debug assertion error on printing - visual-c++

Question

I have a simple text editor that I created in Visual Studio 2010 Professional Edition. Basically I modified the MFC MDI program automatically generated by the VS2010 wizard. The problem is that when i print, it gives me a debug assertion error in viewrich.cpp line 294. I have not modified anything in the code to do with printing, though it could be something wrong with how i used Rich Edit. This is all the information I have. Thanks in advance.
Viewrich.cpp
BOOL CRichEditView::PaginateTo(CDC* pDC, CPrintInfo* pInfo)
// attempts pagination to pInfo->m_nCurPage, TRUE == success
{
ASSERT_VALID(this);
ASSERT_VALID(pDC);
CRect rectSave = pInfo->m_rectDraw;
UINT nPageSave = pInfo->m_nCurPage;
ASSERT(nPageSave > 1); // LINE 294
ASSERT(nPageSave >= (UINT)m_aPageStart.GetSize());
VERIFY(pDC->SaveDC() != 0);
pDC->IntersectClipRect(0, 0, 0, 0);
pInfo->m_nCurPage = (int)m_aPageStart.GetSize();
while (pInfo->m_nCurPage < nPageSave)
{
ASSERT(pInfo->m_nCurPage == (UINT)m_aPageStart.GetSize());
OnPrepareDC(pDC, pInfo);
ASSERT(pInfo->m_bContinuePrinting);
pInfo->m_rectDraw.SetRect(0, 0,
pDC->GetDeviceCaps(HORZRES), pDC->GetDeviceCaps(VERTRES));
pDC->DPtoLP(&pInfo->m_rectDraw);
OnPrint(pDC, pInfo);
if (pInfo->m_nCurPage == (UINT)m_aPageStart.GetSize())
break;
++pInfo->m_nCurPage;
}
BOOL bResult = pInfo->m_nCurPage == nPageSave;
pDC->RestoreDC(-1);
pInfo->m_nCurPage = nPageSave;
pInfo->m_rectDraw = rectSave;
ASSERT_VALID(this);
return bResult;
}
EmergenceView.cpp
IMPLEMENT_DYNCREATE(CEmergenceView, CRichEditView)
BEGIN_MESSAGE_MAP(CEmergenceView, CRichEditView)
// Standard printing commands
ON_COMMAND(ID_FILE_PRINT, &CRichEditView::OnFilePrint)
ON_COMMAND(ID_FILE_PRINT_DIRECT, &CRichEditView::OnFilePrint)
ON_COMMAND(ID_FILE_PRINT_PREVIEW, &CEmergenceView::OnFilePrintPreview)
ON_WM_CONTEXTMENU()
ON_WM_RBUTTONUP()
ON_COMMAND(ID_MUTATE_GROUP, &CEmergenceView::OnMutateGroup)
ON_UPDATE_COMMAND_UI(ID_MUTATE_GROUP, &CEmergenceView::OnUpdateMutateGroup)
ON_COMMAND(ID_MUTATE_RANDOMISE, &CEmergenceView::OnMutateRandomise)
ON_UPDATE_COMMAND_UI(ID_MUTATE_RANDOMISE, &CEmergenceView::OnUpdateMutateRandomise)
ON_COMMAND(ID_HELP_STATISTICS, &CEmergenceView::OnHelpStatistics)
ON_UPDATE_COMMAND_UI(ID_HELP_STATISTICS, &CEmergenceView::OnUpdateHelpStatistics)
ON_COMMAND(ID_MUTATE_POETRIZE, &CEmergenceView::OnMutatePoetrize)
ON_COMMAND(ID_EDIT_SELECTALL, &CEmergenceView::OnEditSelectall)
END_MESSAGE_MAP()
// CEmergenceView construction/destruction
CEmergenceView::CEmergenceView()
{
// TODO: add construction code here
}
CEmergenceView::~CEmergenceView()
{
}
BOOL CEmergenceView::PreCreateWindow(CREATESTRUCT& cs)
{
// TODO: Modify the Window class or styles here by modifying
// the CREATESTRUCT cs
return CRichEditView::PreCreateWindow(cs);
}
// CEmergenceView drawing
void CEmergenceView::OnDraw(CDC* /*pDC*/)
{
CEmergenceDoc* pDoc = GetDocument();
ASSERT_VALID(pDoc);
if (!pDoc)
return;
// TODO: add draw code for native data here
}
// CEmergenceView printing
void CEmergenceView::OnFilePrintPreview()
{
#ifndef SHARED_HANDLERS
AFXPrintPreview(this);
#endif
}
BOOL CEmergenceView::OnPreparePrinting(CPrintInfo* pInfo)
{
// default preparation
return DoPreparePrinting(pInfo);
}
void CEmergenceView::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
// TODO: add extra initialization before printing
}
void CEmergenceView::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
// TODO: add cleanup after printing
}

Answer 1

The ASSERT says it all:
UINT nPageSave = pInfo->m_nCurPage;
ASSERT(nPageSave > 1);
This is a value for the current page to print/paginate. It is set to 1 in CPrintInfo's constructor. But something changed it and made it 0 or negative. Usually this value is completely controlled by the RTF printout. So you must done something that manipulates it.
You have to set the Minimum page and the Maximum page value (SetMinPage and SetMaxPage) in CPrintInfo.