>On 19/12/2018 11:09, Tom Isaacson wrote:
>> Is it possible to use QMetaEnum::keyCount() to initialise an array?
>> Something like:
>>
>> const QMetaEnum metaEnum = QMetaEnum::fromType<MyArray>();
>> int MyArray[metaEnum.keyCount()];
>>
>> It seems like Q_ENUM declares functions with Q_DECL_CONSTEXPR in C++11
>> but I can't figure out how to get this to work.
>
>Are you sure they're constexpr? From what I can see in Qt 5.12,
>keyCount() is not constexpr. It's just const.
You're right, keyCount() isn't. My confusion is that Q_ENUM declares its
functions as constexpr:
#define Q_ENUM(ENUM) \
friend Q_DECL_CONSTEXPR const QMetaObject
*qt_getEnumMetaObject(ENUM) Q_DECL_NOEXCEPT { return &staticMetaObject; } \
friend Q_DECL_CONSTEXPR const char *qt_getEnumName(ENUM)
Q_DECL_NOEXCEPT { return #ENUM; }
But I don't understand why if the functions that then use them aren't.
Tom Isaacson
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