Getting font from CFontDialog - c++

Question

I'm creating a simple GUI for changing the input text formatting in Visual C++ and would like to know how to fetch font type from CFontDialog.
Input text is fetched from EditBox to the m_txtEdit and then passed to m_text.
void CTxtDlg::OnOK()
{
m_txtEdit.GetWindowText(m_text);
CDialog::OnOK();
}
m_text is a member of a CDoc class and should be formatted according to what the user selects in the CFontDialog.
The selected font is passed to the LOGFONT m_lf variable which is a member of CTxtDlg class.
The CFont m_font should be made equal to LOGFONT m_lf.
void CTxtDlg::OnBnClickedButton1()
{
CFontDialog dlg;
int response = dlg.DoModal();
dlg.GetCurrentFont(&m_lf);
}
The CView class should output the CString m_text formatted according to what is set in CFont m_font.
How do I accomplish this?

Answer 1

Essentially, your question is completely unrelated to the CFontDialog. Your comment is asking, how to create a CFont object given a LOGFONT structure. That's what the CFont::CreateFontIndirect member function is for:
if ( !m_font.CreateFontIndirect( &m_lf ) ) {
// handle error
}
// use m_font

Answer 2

First add a CFont to your CTxtDlg:
class CTxtDlg {
....
CFont m_font;
}
Then create and use the font:
void CTxtDlg::OnBnClickedButton1()
{
CFontDialog dlg;
int response = dlg.DoModal();
if(response == IDOK) {
dlg.GetCurrentFont(&m_lf);
VERIFY(m_font.CreateFontIndirect(&m_lf));
SetFont(&m_font);
}
}
Please note that as far as I understand it the font must remain valid after SetFont, so you cannot easily destroy the font and recreate it if it is still set in the dialog.