// Creates the native font family object.
// Note: GDI+ creates singleton font family objects (from the corresponding font file) and reference count them.
private void CreateFontFamily(string name, FontCollection fontCollection)
{
IntPtr fontfamily = IntPtr.Zero;
IntPtr nativeFontCollection = (fontCollection == null) ? IntPtr.Zero : fontCollection._nativeFontCollection;
int status = Gdip.GdipCreateFontFamilyFromName(name, new HandleRef(fontCollection, nativeFontCollection), out fontfamily);
if (status != Gdip.Ok)
{
if (_createDefaultOnFail)
{
fontfamily = GetGdipGenericSansSerif(); // This throws if failed.
}
else
{
// Special case this incredibly common error message to give more information.
if (status == Gdip.FontFamilyNotFound)
{
throw new ArgumentException(SR.Format(SR.GdiplusFontFamilyNotFound, name));
}
else if (status == Gdip.NotTrueTypeFont)
{
throw new ArgumentException(SR.Format(SR.GdiplusNotTrueTypeFont, name));
}
else
{
throw Gdip.StatusException(status);
}
}
}
SetNativeFamily(fontfamily);
}