MFC Dialog Font Substitution Under DBCS System

MORE INFORMATION

CDialog::DoModal eventually calls the following code (excerpt from MFC source code dlgcore.cpp):

   // On DBCS systems, also change "MS Sans Serif" or "Helv" to system
           font.
   if ((!bSetSysFont) && GetSystemMetrics(SM_DBCSENABLED))
   {
      bSetSysFont = ((strFace == _T("MS Sans Serif")) ||
         (strFace == _T("Helv")));
      if (bSetSysFont && (wSize == 8))
         wSize = 0;
   }
   if (bSetSysFont)
   {
      CDialogTemplate dlgTemp(lpDialogTemplate);
      dlgTemp.SetSystemFont(wSize);
      hTemplate = dlgTemp.Detach();
   }
				

"MS Sans Serif" and "Helv" cannot correctly display double-byte strings. Therefore, under a DBCS-enabled system, dialog boxes need to use the system font instead.

This font substitution does not occur on non-DBCS versions of Windows NT or Windows 95.