diff options
Diffstat (limited to 'src/corelib/kernel')
| -rw-r--r-- | src/corelib/kernel/qobject.cpp | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/src/corelib/kernel/qobject.cpp b/src/corelib/kernel/qobject.cpp index c0c97b8..e93c6ee 100644 --- a/src/corelib/kernel/qobject.cpp +++ b/src/corelib/kernel/qobject.cpp @@ -3965,11 +3965,19 @@ QDebug operator<<(QDebug dbg, const QObject *o) { \relates QObject This macro registers one or several \l{QFlags}{flags types} to the - meta-object system. + meta-object system. It is typically used in a class definition to declare + that values of a given enum can be used as flags and combined using the + bitwise OR operator. - Example: + For example, in QLibrary, the \l{QLibrary::LoadHints}{LoadHints} flag is + declared in the following way: + + \snippet doc/src/snippets/code/src_corelib_kernel_qobject.cpp 39a + + The declaration of the flags themselves is performed in the public section + of the QLibrary class itself, using the \l Q_DECLARE_FLAGS() macro: - \snippet doc/src/snippets/code/src_corelib_kernel_qobject.cpp 39 + \snippet doc/src/snippets/code/src_corelib_kernel_qobject.cpp 39b \note This macro takes care of registering individual flag values with the meta-object system, so it is unnecessary to use Q_ENUMS() |