Add missing "We mean it" comments to private headers.

Task-number: QTBUG-48595
Change-Id: I1370d9229b0606582cbd828de84ee2717dca3daf
Reviewed-by: Yoann Lopes <yoann.lopes@theqtcompany.com>

43 files changed, 473 insertions, 0 deletions

diff --git a/src/imports/audioengine/qaudioengine_openal_p.h b/src/imports/audioengine/qaudioengine_openal_p.h
index f534ab8c4..c2cecff40 100644
--- a/src/imports/audioengine/qaudioengine_openal_p.h
+++ b/src/imports/audioengine/qaudioengine_openal_p.h
@@ -34,6 +34,17 @@
 #ifndef QAUDIOENGINE_OPENAL_P_H
 #define QAUDIOENGINE_OPENAL_P_H
 
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
 #include <QObject>
 #include <QList>
 #include <QMap>
diff --git a/src/imports/audioengine/qaudioengine_p.h b/src/imports/audioengine/qaudioengine_p.h
index d62e4de48..dccce09ed 100644
--- a/src/imports/audioengine/qaudioengine_p.h
+++ b/src/imports/audioengine/qaudioengine_p.h
@@ -34,6 +34,17 @@
 #ifndef QAUDIOENGINE_P_H
 #define QAUDIOENGINE_P_H
 
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
 #include <QtCore/QObject>
 #include <QtCore/QMap>
 #include <QtCore/QUrl>
diff --git a/src/imports/audioengine/qdeclarative_attenuationmodel_p.h b/src/imports/audioengine/qdeclarative_attenuationmodel_p.h
index f276757de..d4d12df04 100644
--- a/src/imports/audioengine/qdeclarative_attenuationmodel_p.h
+++ b/src/imports/audioengine/qdeclarative_attenuationmodel_p.h
@@ -34,6 +34,17 @@
 #ifndef QDECLARATIVEATTENUATIONMODEL_P_H
 #define QDECLARATIVEATTENUATIONMODEL_P_H
 
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
 #include <QtQml/qqml.h>
 #include <QVector3D>
 
diff --git a/src/imports/audioengine/qdeclarative_audiocategory_p.h b/src/imports/audioengine/qdeclarative_audiocategory_p.h
index 0345edfdb..cdcd7351c 100644
--- a/src/imports/audioengine/qdeclarative_audiocategory_p.h
+++ b/src/imports/audioengine/qdeclarative_audiocategory_p.h
@@ -34,6 +34,17 @@
 #ifndef QDECLARATIVEAUDIOCATEGORY_P_H
 #define QDECLARATIVEAUDIOCATEGORY_P_H
 
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
 #include <QtQml/qqml.h>
 
 QT_BEGIN_NAMESPACE
diff --git a/src/imports/audioengine/qdeclarative_audioengine_p.h b/src/imports/audioengine/qdeclarative_audioengine_p.h
index 7ae6049f0..497fdecac 100644
--- a/src/imports/audioengine/qdeclarative_audioengine_p.h
+++ b/src/imports/audioengine/qdeclarative_audioengine_p.h
@@ -34,6 +34,17 @@
 #ifndef QDECLARATIVEAUDIOENGINE_P_H
 #define QDECLARATIVEAUDIOENGINE_P_H
 
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
 #include <QtQml/qqml.h>
 #include <QtQml/qqmlcomponent.h>
 #include <QtQml/qqmlpropertymap.h>
diff --git a/src/imports/audioengine/qdeclarative_audiolistener_p.h b/src/imports/audioengine/qdeclarative_audiolistener_p.h
index 057e4c492..907333b83 100644
--- a/src/imports/audioengine/qdeclarative_audiolistener_p.h
+++ b/src/imports/audioengine/qdeclarative_audiolistener_p.h
@@ -34,6 +34,17 @@
 #ifndef QDECLARATIVEAUDIOLISTENER_P_H
 #define QDECLARATIVEAUDIOLISTENER_P_H
 
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
 #include <QtCore/QObject>
 #include <QtGui/qvector3d.h>
 
diff --git a/src/imports/audioengine/qdeclarative_audiosample_p.h b/src/imports/audioengine/qdeclarative_audiosample_p.h
index 5b549e785..2b8d9f8da 100644
--- a/src/imports/audioengine/qdeclarative_audiosample_p.h
+++ b/src/imports/audioengine/qdeclarative_audiosample_p.h
@@ -34,6 +34,17 @@
 #ifndef QDECLARATIVEAUDIOSAMPLE_P_H
 #define QDECLARATIVEAUDIOSAMPLE_P_H
 
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
 #include <QtQml/qqml.h>
 
 QT_BEGIN_NAMESPACE
diff --git a/src/imports/audioengine/qdeclarative_playvariation_p.h b/src/imports/audioengine/qdeclarative_playvariation_p.h
index d0eed0d0a..4a8306d72 100644
--- a/src/imports/audioengine/qdeclarative_playvariation_p.h
+++ b/src/imports/audioengine/qdeclarative_playvariation_p.h
@@ -34,6 +34,17 @@
 #ifndef QDECLARATIVEPLAYVARIATION_P_H
 #define QDECLARATIVEPLAYVARIATION_P_H
 
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
 #include <QtQml/qqml.h>
 
 QT_BEGIN_NAMESPACE
diff --git a/src/imports/audioengine/qdeclarative_sound_p.h b/src/imports/audioengine/qdeclarative_sound_p.h
index 83b1eb2af..494fe2e34 100644
--- a/src/imports/audioengine/qdeclarative_sound_p.h
+++ b/src/imports/audioengine/qdeclarative_sound_p.h
@@ -34,6 +34,17 @@
 #ifndef QDECLARATIVESOUND_P_H
 #define QDECLARATIVESOUND_P_H
 
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
 #include <QtQml/qqml.h>
 #include <QtCore/qlist.h>
 #include "qdeclarative_playvariation_p.h"
diff --git a/src/imports/audioengine/qdeclarative_soundinstance_p.h b/src/imports/audioengine/qdeclarative_soundinstance_p.h
index 55310a3ae..80fe82e47 100644
--- a/src/imports/audioengine/qdeclarative_soundinstance_p.h
+++ b/src/imports/audioengine/qdeclarative_soundinstance_p.h
@@ -34,6 +34,17 @@
 #ifndef QDECLARATIVE_SOUNDINSTANCE_P_H
 #define QDECLARATIVE_SOUNDINSTANCE_P_H
 
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
 #include <QtCore/QObject>
 #include <QtGui/qvector3d.h>
 #include "qsoundinstance_p.h"
diff --git a/src/imports/audioengine/qsoundbuffer_p.h b/src/imports/audioengine/qsoundbuffer_p.h
index 9a98b59ba..9f7af625a 100644
--- a/src/imports/audioengine/qsoundbuffer_p.h
+++ b/src/imports/audioengine/qsoundbuffer_p.h
@@ -34,6 +34,17 @@
 #ifndef QSOUNDBUFFER_P_H
 #define QSOUNDBUFFER_P_H
 
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
 #include <QObject>
 
 QT_BEGIN_NAMESPACE
diff --git a/src/imports/audioengine/qsoundinstance_p.h b/src/imports/audioengine/qsoundinstance_p.h
index 37b252b98..39bab3231 100644
--- a/src/imports/audioengine/qsoundinstance_p.h
+++ b/src/imports/audioengine/qsoundinstance_p.h
@@ -34,6 +34,17 @@
 #ifndef QSOUNDINSTANCE_P_H
 #define QSOUNDINSTANCE_P_H
 
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
 #include <QVector3D>
 #include <QObject>
 #include "qsoundsource_p.h"
diff --git a/src/imports/audioengine/qsoundsource_p.h b/src/imports/audioengine/qsoundsource_p.h
index b9f68ff98..dfe8d0851 100644
--- a/src/imports/audioengine/qsoundsource_p.h
+++ b/src/imports/audioengine/qsoundsource_p.h
@@ -34,6 +34,17 @@
 #ifndef QSOUNDSOURCE_P_H
 #define QSOUNDSOURCE_P_H
 
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
 #include <QVector3D>
 #include <QObject>
 
diff --git a/src/imports/multimedia/qdeclarativetorch_p.h b/src/imports/multimedia/qdeclarativetorch_p.h
index b7ef55755..db7f99ed5 100644
--- a/src/imports/multimedia/qdeclarativetorch_p.h
+++ b/src/imports/multimedia/qdeclarativetorch_p.h
@@ -35,6 +35,17 @@
 #ifndef QDECLARATIVETORCH_P_H
 #define QDECLARATIVETORCH_P_H
 
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
 #include <QtCore/QObject>
 #include <QtQml/qqml.h>
 #include <qcamera.h>
diff --git a/src/multimedia/audio/qaudiobuffer_p.h b/src/multimedia/audio/qaudiobuffer_p.h
index 98e2a1868..a98d6d3bf 100644
--- a/src/multimedia/audio/qaudiobuffer_p.h
+++ b/src/multimedia/audio/qaudiobuffer_p.h
@@ -34,6 +34,17 @@
 #ifndef QAUDIOBUFFER_P_H
 #define QAUDIOBUFFER_P_H
 
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
 #include <qtmultimediadefs.h>
 #include <qmultimedia.h>
 
diff --git a/src/multimedia/gsttools_headers/gstvideoconnector_p.h b/src/multimedia/gsttools_headers/gstvideoconnector_p.h
index 43a56f5d8..1407dcd17 100644
--- a/src/multimedia/gsttools_headers/gstvideoconnector_p.h
+++ b/src/multimedia/gsttools_headers/gstvideoconnector_p.h
@@ -34,6 +34,17 @@
 #ifndef QGSTVIDEOCONNECTOR_H
 #define QGSTVIDEOCONNECTOR_H
 
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
 #include <gst/gst.h>
 
 G_BEGIN_DECLS
diff --git a/src/multimedia/gsttools_headers/qgstappsrc_p.h b/src/multimedia/gsttools_headers/qgstappsrc_p.h
index ec54af0d1..5b32911e4 100644
--- a/src/multimedia/gsttools_headers/qgstappsrc_p.h
+++ b/src/multimedia/gsttools_headers/qgstappsrc_p.h
@@ -34,6 +34,17 @@
 #ifndef QGSTAPPSRC_H
 #define QGSTAPPSRC_H
 
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
 #include <QtCore/qobject.h>
 #include <QtCore/qiodevice.h>
 
diff --git a/src/multimedia/gsttools_headers/qgstcodecsinfo_p.h b/src/multimedia/gsttools_headers/qgstcodecsinfo_p.h
index 8e5867c16..183768a66 100644
--- a/src/multimedia/gsttools_headers/qgstcodecsinfo_p.h
+++ b/src/multimedia/gsttools_headers/qgstcodecsinfo_p.h
@@ -34,6 +34,17 @@
 #ifndef QGSTCODECSINFO_H
 #define QGSTCODECSINFO_H
 
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
 #include <QtCore/qmap.h>
 #include <QtCore/qstringlist.h>
 
diff --git a/src/multimedia/gsttools_headers/qgstreameraudioinputselector_p.h b/src/multimedia/gsttools_headers/qgstreameraudioinputselector_p.h
index 20259f411..75ce9f5ea 100644
--- a/src/multimedia/gsttools_headers/qgstreameraudioinputselector_p.h
+++ b/src/multimedia/gsttools_headers/qgstreameraudioinputselector_p.h
@@ -34,6 +34,17 @@
 #ifndef QGSTREAMERAUDIOINPUTSELECTOR_H
 #define QGSTREAMERAUDIOINPUTSELECTOR_H
 
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
 #include <qaudioinputselectorcontrol.h>
 #include <QtCore/qstringlist.h>
 
diff --git a/src/multimedia/gsttools_headers/qgstreameraudioprobecontrol_p.h b/src/multimedia/gsttools_headers/qgstreameraudioprobecontrol_p.h
index 3246ac2f6..9c25a53a4 100644
--- a/src/multimedia/gsttools_headers/qgstreameraudioprobecontrol_p.h
+++ b/src/multimedia/gsttools_headers/qgstreameraudioprobecontrol_p.h
@@ -34,6 +34,17 @@
 #ifndef QGSTREAMERAUDIOPROBECONTROL_H
 #define QGSTREAMERAUDIOPROBECONTROL_H
 
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
 #include <gst/gst.h>
 #include <qmediaaudioprobecontrol.h>
 #include <QtCore/qmutex.h>
diff --git a/src/multimedia/gsttools_headers/qgstreamerbufferprobe_p.h b/src/multimedia/gsttools_headers/qgstreamerbufferprobe_p.h
index ca1547a87..307d68ea7 100644
--- a/src/multimedia/gsttools_headers/qgstreamerbufferprobe_p.h
+++ b/src/multimedia/gsttools_headers/qgstreamerbufferprobe_p.h
@@ -34,6 +34,17 @@
 #ifndef QGSTREAMERBUFFERPROBE_H
 #define QGSTREAMERBUFFERPROBE_H
 
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
 #include <gst/gst.h>
 
 #include <QtCore/qglobal.h>
diff --git a/src/multimedia/gsttools_headers/qgstreamergltexturerenderer_p.h b/src/multimedia/gsttools_headers/qgstreamergltexturerenderer_p.h
index 5c90fc588..64aaed909 100644
--- a/src/multimedia/gsttools_headers/qgstreamergltexturerenderer_p.h
+++ b/src/multimedia/gsttools_headers/qgstreamergltexturerenderer_p.h
@@ -34,6 +34,17 @@
 #ifndef QGSTREAMERGLTEXTURERENDERER_H
 #define QGSTREAMERGLTEXTURERENDERER_H
 
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
 #include <qvideorenderercontrol.h>
 #include <private/qvideosurfacegstsink_p.h>
 #include <private/qgstreamerbushelper_p.h>
diff --git a/src/multimedia/gsttools_headers/qgstreamermirtexturerenderer_p.h b/src/multimedia/gsttools_headers/qgstreamermirtexturerenderer_p.h
index e1be653cc..a794258c7 100644
--- a/src/multimedia/gsttools_headers/qgstreamermirtexturerenderer_p.h
+++ b/src/multimedia/gsttools_headers/qgstreamermirtexturerenderer_p.h
@@ -34,6 +34,17 @@
 #ifndef QGSTREAMERMIRTEXTURERENDERER_H
 #define QGSTREAMERMIRTEXTURERENDERER_H
 
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
 #include <qmediaplayer.h>
 #include <qvideorenderercontrol.h>
 #include <private/qvideosurfacegstsink_p.h>
diff --git a/src/multimedia/gsttools_headers/qgstreamervideoinputdevicecontrol_p.h b/src/multimedia/gsttools_headers/qgstreamervideoinputdevicecontrol_p.h
index cd03d3257..597567c52 100644
--- a/src/multimedia/gsttools_headers/qgstreamervideoinputdevicecontrol_p.h
+++ b/src/multimedia/gsttools_headers/qgstreamervideoinputdevicecontrol_p.h
@@ -34,6 +34,17 @@
 #ifndef QGSTREAMERVIDEOINPUTDEVICECONTROL_H
 #define QGSTREAMERVIDEOINPUTDEVICECONTROL_H
 
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
 #include <qvideodeviceselectorcontrol.h>
 #include <QtCore/qstringlist.h>
 
diff --git a/src/multimedia/gsttools_headers/qgstreamervideooverlay_p.h b/src/multimedia/gsttools_headers/qgstreamervideooverlay_p.h
index e18a1b5ca..cad04510f 100644
--- a/src/multimedia/gsttools_headers/qgstreamervideooverlay_p.h
+++ b/src/multimedia/gsttools_headers/qgstreamervideooverlay_p.h
@@ -34,6 +34,17 @@
 #ifndef QGSTREAMERVIDEOOVERLAY_P_H
 #define QGSTREAMERVIDEOOVERLAY_P_H
 
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
 #include <private/qgstreamerbushelper_p.h>
 #include <private/qgstreamerbufferprobe_p.h>
 #include <QtGui/qwindowdefs.h>
diff --git a/src/multimedia/gsttools_headers/qgstreamervideoprobecontrol_p.h b/src/multimedia/gsttools_headers/qgstreamervideoprobecontrol_p.h
index c77dae7a2..4b399f59d 100644
--- a/src/multimedia/gsttools_headers/qgstreamervideoprobecontrol_p.h
+++ b/src/multimedia/gsttools_headers/qgstreamervideoprobecontrol_p.h
@@ -34,6 +34,17 @@
 #ifndef QGSTREAMERVIDEOPROBECONTROL_H
 #define QGSTREAMERVIDEOPROBECONTROL_H
 
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
 #include <gst/gst.h>
 #include <gst/video/video.h>
 #include <qmediavideoprobecontrol.h>
diff --git a/src/multimedia/gsttools_headers/qgstreamervideorenderer_p.h b/src/multimedia/gsttools_headers/qgstreamervideorenderer_p.h
index a4cf72a56..f828e14a6 100644
--- a/src/multimedia/gsttools_headers/qgstreamervideorenderer_p.h
+++ b/src/multimedia/gsttools_headers/qgstreamervideorenderer_p.h
@@ -34,6 +34,17 @@
 #ifndef QGSTREAMERVIDEORENDERER_H
 #define QGSTREAMERVIDEORENDERER_H
 
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
 #include <qvideorenderercontrol.h>
 #include <private/qvideosurfacegstsink_p.h>
 #include <qabstractvideosurface.h>
diff --git a/src/multimedia/gsttools_headers/qgstreamervideorendererinterface_p.h b/src/multimedia/gsttools_headers/qgstreamervideorendererinterface_p.h
index cb6ccb15f..3f68fb7d3 100644
--- a/src/multimedia/gsttools_headers/qgstreamervideorendererinterface_p.h
+++ b/src/multimedia/gsttools_headers/qgstreamervideorendererinterface_p.h
@@ -34,6 +34,17 @@
 #ifndef QGSTREAMERVIDEOOUTPUTCONTROL_H
 #define QGSTREAMERVIDEOOUTPUTCONTROL_H
 
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
 #include <gst/gst.h>
 
 #include <QtCore/qobject.h>
diff --git a/src/multimedia/gsttools_headers/qgstreamervideowidget_p.h b/src/multimedia/gsttools_headers/qgstreamervideowidget_p.h
index 4526a8ac9..724c88d16 100644
--- a/src/multimedia/gsttools_headers/qgstreamervideowidget_p.h
+++ b/src/multimedia/gsttools_headers/qgstreamervideowidget_p.h
@@ -34,6 +34,17 @@
 #ifndef QGSTREAMERVIDEOWIDGET_H
 #define QGSTREAMERVIDEOWIDGET_H
 
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
 #include <qvideowidgetcontrol.h>
 
 #include "qgstreamervideorendererinterface_p.h"
diff --git a/src/multimedia/gsttools_headers/qgstreamervideowindow_p.h b/src/multimedia/gsttools_headers/qgstreamervideowindow_p.h
index 8884aa2c0..bf115f48f 100644
--- a/src/multimedia/gsttools_headers/qgstreamervideowindow_p.h
+++ b/src/multimedia/gsttools_headers/qgstreamervideowindow_p.h
@@ -34,6 +34,17 @@
 #ifndef QGSTREAMERVIDEOWINDOW_H
 #define QGSTREAMERVIDEOWINDOW_H
 
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
 #include <qvideowindowcontrol.h>
 
 #include "qgstreamervideorendererinterface_p.h"
diff --git a/src/multimedia/qmediaresourcepolicy_p.h b/src/multimedia/qmediaresourcepolicy_p.h
index ee07c87e3..9877a628e 100644
--- a/src/multimedia/qmediaresourcepolicy_p.h
+++ b/src/multimedia/qmediaresourcepolicy_p.h
@@ -34,6 +34,17 @@
 #ifndef QMEDIARESOURCEPOLICY_H
 #define QMEDIARESOURCEPOLICY_H
 
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
 #include <QObject>
 #include "qtmultimediadefs.h"
 
diff --git a/src/multimedia/qmediaresourcepolicyplugin_p.h b/src/multimedia/qmediaresourcepolicyplugin_p.h
index 938ea9d5d..47596352c 100644
--- a/src/multimedia/qmediaresourcepolicyplugin_p.h
+++ b/src/multimedia/qmediaresourcepolicyplugin_p.h
@@ -34,6 +34,17 @@
 #ifndef QRESOURCEPOLICYPLUGIN_P_H
 #define QRESOURCEPOLICYPLUGIN_P_H
 
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
 #include <QObject>
 #include <qtmultimediadefs.h>
 
diff --git a/src/multimedia/qmediaresourceset_p.h b/src/multimedia/qmediaresourceset_p.h
index cddb380da..ccfa55954 100644
--- a/src/multimedia/qmediaresourceset_p.h
+++ b/src/multimedia/qmediaresourceset_p.h
@@ -33,6 +33,17 @@
 
 #ifndef QMEDIARESOURCESET_P_H
 #define QMEDIARESOURCESET_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
 #include <QObject>
 #include <qtmultimediadefs.h>
 
diff --git a/src/multimedia/qmediaserviceprovider_p.h b/src/multimedia/qmediaserviceprovider_p.h
index 4230c427d..e2b02c8b9 100644
--- a/src/multimedia/qmediaserviceprovider_p.h
+++ b/src/multimedia/qmediaserviceprovider_p.h
@@ -34,6 +34,17 @@
 #ifndef QMEDIASERVICEPROVIDER_H
 #define QMEDIASERVICEPROVIDER_H
 
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
 #include <QtCore/qobject.h>
 #include <QtCore/qshareddata.h>
 #include <qtmultimediadefs.h>
diff --git a/src/multimedia/qmediastoragelocation_p.h b/src/multimedia/qmediastoragelocation_p.h
index c934089d6..56995026a 100644
--- a/src/multimedia/qmediastoragelocation_p.h
+++ b/src/multimedia/qmediastoragelocation_p.h
@@ -34,6 +34,17 @@
 #ifndef QMEDIASTORAGELOCATION_H
 #define QMEDIASTORAGELOCATION_H
 
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
 #include <qtmultimediadefs.h>
 #include <QDir>
 #include <QMap>
diff --git a/src/multimedia/qtmultimediaquicktools_headers/qdeclarativevideooutput_backend_p.h b/src/multimedia/qtmultimediaquicktools_headers/qdeclarativevideooutput_backend_p.h
index 450c0cff5..94d7d15cd 100644
--- a/src/multimedia/qtmultimediaquicktools_headers/qdeclarativevideooutput_backend_p.h
+++ b/src/multimedia/qtmultimediaquicktools_headers/qdeclarativevideooutput_backend_p.h
@@ -35,6 +35,17 @@
 #ifndef QDECLARATIVEVIDEOOUTPUT_BACKEND_P_H
 #define QDECLARATIVEVIDEOOUTPUT_BACKEND_P_H
 
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
 #include <QtCore/qpointer.h>
 #include <QtCore/qsize.h>
 #include <QtQuick/qquickitem.h>
diff --git a/src/multimedia/qtmultimediaquicktools_headers/qdeclarativevideooutput_p.h b/src/multimedia/qtmultimediaquicktools_headers/qdeclarativevideooutput_p.h
index 87565b91b..0f34cc036 100644
--- a/src/multimedia/qtmultimediaquicktools_headers/qdeclarativevideooutput_p.h
+++ b/src/multimedia/qtmultimediaquicktools_headers/qdeclarativevideooutput_p.h
@@ -35,6 +35,17 @@
 #ifndef QDECLARATIVEVIDEOOUTPUT_P_H
 #define QDECLARATIVEVIDEOOUTPUT_P_H
 
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
 #include <QtCore/qrect.h>
 #include <QtCore/qsharedpointer.h>
 #include <QtQuick/qquickitem.h>
diff --git a/src/multimedia/qtmultimediaquicktools_headers/qsgvideonode_p.h b/src/multimedia/qtmultimediaquicktools_headers/qsgvideonode_p.h
index 11d76f6b4..80fdab3b3 100644
--- a/src/multimedia/qtmultimediaquicktools_headers/qsgvideonode_p.h
+++ b/src/multimedia/qtmultimediaquicktools_headers/qsgvideonode_p.h
@@ -34,6 +34,17 @@
 #ifndef QSGVIDEONODE_P_H
 #define QSGVIDEONODE_P_H
 
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
 #include <QtQuick/qsgnode.h>
 #include <private/qtmultimediaquickdefs_p.h>
 
diff --git a/src/multimedia/recording/qmediarecorder_p.h b/src/multimedia/recording/qmediarecorder_p.h
index 9510d2406..598e833ad 100644
--- a/src/multimedia/recording/qmediarecorder_p.h
+++ b/src/multimedia/recording/qmediarecorder_p.h
@@ -34,6 +34,17 @@
 #ifndef QMEDIARECORDER_P_H
 #define QMEDIARECORDER_P_H
 
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
 #include "qmediarecorder.h"
 #include "qmediaobject_p.h"
 #include <QtCore/qurl.h>
diff --git a/src/multimedia/video/qvideooutputorientationhandler_p.h b/src/multimedia/video/qvideooutputorientationhandler_p.h
index 14a0c4a75..252ee2920 100644
--- a/src/multimedia/video/qvideooutputorientationhandler_p.h
+++ b/src/multimedia/video/qvideooutputorientationhandler_p.h
@@ -34,6 +34,17 @@
 #ifndef QVIDEOOUTPUTORIENTATIONHANDLER_P_H
 #define QVIDEOOUTPUTORIENTATIONHANDLER_P_H
 
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
 #include <qtmultimediadefs.h>
 
 #include <QObject>
diff --git a/src/multimedia/video/qvideosurfaceoutput_p.h b/src/multimedia/video/qvideosurfaceoutput_p.h
index 2356a6b44..b9e3960f4 100644
--- a/src/multimedia/video/qvideosurfaceoutput_p.h
+++ b/src/multimedia/video/qvideosurfaceoutput_p.h
@@ -34,6 +34,17 @@
 #ifndef QVIDEOSURFACEOUTPUT_P_H
 #define QVIDEOSURFACEOUTPUT_P_H
 
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
 #include <qmediabindableinterface.h>
 
 #include <QtCore/qsharedpointer.h>
diff --git a/src/qtmultimediaquicktools/qdeclarativevideooutput_render_p.h b/src/qtmultimediaquicktools/qdeclarativevideooutput_render_p.h
index cb1168ee9..d33bc0b11 100644
--- a/src/qtmultimediaquicktools/qdeclarativevideooutput_render_p.h
+++ b/src/qtmultimediaquicktools/qdeclarativevideooutput_render_p.h
@@ -35,6 +35,17 @@
 #ifndef QDECLARATIVEVIDEOOUTPUT_RENDER_P_H
 #define QDECLARATIVEVIDEOOUTPUT_RENDER_P_H
 
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
 #include "qdeclarativevideooutput_backend_p.h"
 #include "qsgvideonode_yuv.h"
 #include "qsgvideonode_rgb.h"
diff --git a/src/qtmultimediaquicktools/qdeclarativevideooutput_window_p.h b/src/qtmultimediaquicktools/qdeclarativevideooutput_window_p.h
index 446ce52cd..68403852e 100644
--- a/src/qtmultimediaquicktools/qdeclarativevideooutput_window_p.h
+++ b/src/qtmultimediaquicktools/qdeclarativevideooutput_window_p.h
@@ -34,6 +34,17 @@
 #ifndef QDECLARATIVEVIDEOOUTPUT_WINDOW_P_H
 #define QDECLARATIVEVIDEOOUTPUT_WINDOW_P_H
 
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
 #include "qdeclarativevideooutput_backend_p.h"
 
 QT_BEGIN_NAMESPACE