A trouble with EnumFontFamiliesProc

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Hi every body!
I have a trouble, help me please!
I am a beginner in MFC programming. I have coded a progam using font system. Through a book, I knew the way to lists font system by using two functions:

int CALLBACK EnumFontFamExProc(ENUMLOGFONTEX *lpelfe, NEWTEXTMETRICEX *lpntme, DWORD nFontType, LPARAM lParam)
{
    CFontDlg *pWnd = (CFontDlg*) lParam;
    //CFontDlg is the class base on the interface-dialog of my program
    pWnd->m_lbFont.AddString(lpelfe->elfLogFont.lfFaceName);
    //m_lbFont is a variable to control ListBox, which on I want to lists font system
    return 1;
}

void CFontDlg::FillFontList(void)
{
    LOGFONT lf;
    lf.lfCharSet = DEFAULT_CHARSET;
    lstrcpy(lf.lfFaceName, _T(""));
    m_lbFont.ResetContent();
    CClientDC dc(this);
    ::EnumFontFamiliesEx((HDC) dc, &lf, (FONTENUMPROC) EnumFontFamExProc, (LPARAM) this, 0);
}

When I build the program, there is a error:
error C2440: 'type cast' : cannot convert from 'overloaded-function' to 'FONTENUMPROC'
I can't understand what is happended. Please help me!
My address: maidinhduong_2179 [at] yahoo.com.vn
Thankyou!

Posted 19-Jan-10 5:15am

duong2179

Updated 19-Jan-10 23:26pm

Richard MacCutchan

v3

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Graham Breach · Answer 1 · 2010-01-19T09:29:00

There's a ready-made MFC class called CFontDialog you can use to get a font selection from the user, but to answer your question...

It sounds like the signature of your function definition doesn't match a function prototype, which is why the error says 'overloaded-function'.

A simple way to check would be to rename it in the two places you have shown (the name doesn't really matter) - try replacing EnumFontFamExProc with MyEnumFontFamExProc or something similar.

Richard MacCutchan · Answer 2 · 2010-01-19T23:24:00

Solution 2

Is this the only place that EnumFontFamExProc is defined? It looks as though the compiler has another definition from somewhere; perhaps you could post some more of the code, including the CFontDlg class definition.

ps I also put your code in <pre></pre> tags to make it more readable.

Posted 19-Jan-10 23:24pm