哪种字体是 MFC 对话框控件的默认字体?

My code to initialize windows or dialogs generally looks something like this (SystemInfo::IsVistaOrLater is a helper function I've written; the implementation is the obvious):

// Get the system message box font
NONCLIENTMETRICS ncm;
ncm.cbSize = sizeof(ncm);

// If we're compiling with the Vista SDK or later, the NONCLIENTMETRICS struct
// will be the wrong size for previous versions, so we need to adjust it.
#if(_MSC_VER >= 1500 && WINVER >= 0x0600)
if (!SystemInfo::IsVistaOrLater())
{
    // In versions of Windows prior to Vista, the iPaddedBorderWidth member
    // is not present, so we need to subtract its size from cbSize.
    ncm.cbSize -= sizeof(ncm.iPaddedBorderWidth);
}
#endif

SystemParametersInfo(SPI_GETNONCLIENTMETRICS, ncm.cbSize, &ncm, 0);
HFONT hDlgFont = CreateFontIndirect(&(ncm.lfMessageFont));

// Set the dialog to use the system message box font
SetFont(m_DlgFont, TRUE);
SendMessage(hWnd, WM_SETFONT, (WPARAM)hDlgFont, MAKELPARAM(FALSE, 0));

或者在 MFC 中更容易，使用方便的 SendMessageToDescendants 方法
(m_DlgFont 是为类定义的 CFont 对象):

// Get the system message box font
NONCLIENTMETRICS ncm;
ncm.cbSize = sizeof(ncm);
SystemParametersInfo(SPI_GETNONCLIENTMETRICS, ncm.cbSize, &ncm, 0);
LOGFONT lfDlgFont = ncm.lfMessageFont;
m_DlgFont.CreateFontIndirect(&lfDlgFont);

// Set the dialog and all its controls to use the system message box font
SetFont(m_DlgFont, TRUE);
SendMessageToDescendants(WM_SETFONT, (WPARAM)m_DlgFont.m_hFont, MAKELPARAM(FALSE, 0), TRUE);