Qt enum to string / string to enum / flag to string / string to flag

Was recently changing the way one of my application stored values in it's configuration. Entries that were presented to the user via QComboBoxes were stored by index in the configuration, which made it impossible to understand the configuration without having the application running next to it.
I came up with a couple of macros, utilizing QMetaObject / QMetaEnum. The QMetaEnum class provides functionalities to translate an enum or flag value into a string and vice versa. The problem is that the way of achieving this would involve syntax like

auto metaObject = ObjectName::staticMetaObject();

auto enumIndex = metaObject.indexOfEnumerator("MyFencyEnum");

auto metaEnum = metaObject.enumerator(enumIndex);

auto enumString = metaEnum.valueToKey(MyFencyEnum::EnumVal1);

OR

auto enumValue = metaEnum.keyToValue("EnumVal1");

Thus, I`ve created the following macros that make the code a whole lot cleaner:

// c = class name; e = enum name; v = enum value
#define ENUM_TO_STRING(c, e, v) \
    (c::staticMetaObject.enumerator(c::staticMetaObject.indexOfEnumerator(#e)).valueToKey(v))
// c = class name; e = enum name; s = string value
#define STRING_TO_ENUM(c, e, s) \
    (c::e)(c::staticMetaObject.enumerator(c::staticMetaObject.indexOfEnumerator(#e)).keyToValue(s.toAscii()))
// c = class name; f = flag name, v = flag value
#define FLAG_TO_STRING(c, f, v) \
    (c::staticMetaObject.enumerator(c::staticMetaObject.indexOfEnumerator(#f)).valueToKeys(v))
// c = class name; f = flag name; s = string value
#define STRING_TO_FLAG(c, f, s) \
    (c::f)(c::staticMetaObject.enumerator(c::staticMetaObject.indexOfEnumerator(#f)).keysToValue(s.toAscii()))

And here is another useful macro, helping to get the number of values in an enum:

//c = class name; e = enum name
#define ENUM_KEY_COUNT(c,e) \
    (c::staticMetaObject.enumerator(c::staticMetaObject.indexOfEnumerator(#e)).keyCount())

Maybe someone out there can also utilize these.