diff options
Diffstat (limited to 'src/testlib/qsignalspy.qdoc')
| -rw-r--r-- | src/testlib/qsignalspy.qdoc | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/testlib/qsignalspy.qdoc b/src/testlib/qsignalspy.qdoc index 0c22868852..83dcccede2 100644 --- a/src/testlib/qsignalspy.qdoc +++ b/src/testlib/qsignalspy.qdoc @@ -62,7 +62,11 @@ /*! \fn QSignalSpy::QSignalSpy(QObject *object, const char *signal) Constructs a new QSignalSpy that listens for emissions of the \a signal - from the QObject \a object. Neither \a signal nor \a object can be null. + from the QObject \a object. If QSignalSpy is not able to listen for a + valid signal (for example, because \a object is null or \a signal does + not denote a valid signal of \a object), an explanatory warning message + will be output using qWarning() and subsequent calls to \c isValid() will + return false. Example: \snippet doc/src/snippets/code/doc_src_qsignalspy.cpp 4 |