Advanced MFC Programming

Chapter 9. Font
{
}
POSITION pos;
CGDIView *ptrView;
pos=GetFirstViewPosition();
do
{
ptrView=(CGDIView *)GetNextView(pos);
}while(!ptrView->IsKindOf(RUNTIME_CLASS(CGDIView)));
return ptrView;
We will implement function CGDIView::RedrawCaret() later.
In the sample, member variable m_nCaretIndex is initialized in the constructor along with m_szText:
CGDIDoc::CGDIDoc()
{
m_szText="This is just a test string";
m_nCaretIndex=0;
}
Also, when the document is first created or when a new font is selected, we need to update the value of
m_nCaretVerSize, so functions CGDIDoc::OnNewDocument() and CGDIDoc::OnDialogFont() are updated
as follows:
Old version of CGDIDoc::OnNewDocument():
BOOL CGDIDoc::OnNewDocument()
{
CClientDC dc(NULL);
LOGFONT lf;
CFont *ptrFont;
if(!CDocument::OnNewDocument())return FALSE;
ptrFont=dc.GetCurrentFont();
ptrFont->GetLogFont(&lf);
VERIFY(m_ftDraw.CreateFontIndirect(&lf));
}
return TRUE;
New version of CGDIDoc::OnNewDocument():
BOOL CGDIDoc::OnNewDocument()
{
CClientDC dc(NULL);
LOGFONT lf;
CFont *ptrFont;
TEXTMETRIC tm;
if(!CDocument::OnNewDocument())return FALSE;
ptrFont=dc.GetCurrentFont();
ptrFont->GetLogFont(&lf);
VERIFY(m_ftDraw.CreateFontIndirect(&lf));
dc.GetOutputTextMetrics(&tm);
m_nCaretVerSize=tm.tmHeight;
}
return TRUE;
Old version of CGDIDoc::OnDialogFont():
void CGDIDoc::OnDialogFont()
{
CFontDialog dlg;
LOGFONT lf;
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