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-rw-r--r--src/datavisualization/utils/camerahelper_p.h2
-rw-r--r--src/datavisualization/utils/shaderhelper_p.h2
-rw-r--r--src/datavisualization/utils/utils_p.h2
3 files changed, 4 insertions, 2 deletions
diff --git a/src/datavisualization/utils/camerahelper_p.h b/src/datavisualization/utils/camerahelper_p.h
index 5b317b00..f4e16774 100644
--- a/src/datavisualization/utils/camerahelper_p.h
+++ b/src/datavisualization/utils/camerahelper_p.h
@@ -32,8 +32,10 @@
#include "datavisualizationglobal_p.h"
#include "q3dcamera.h"
+QT_BEGIN_NAMESPACE
class QMatrix4x4;
class QPoint;
+QT_END_NAMESPACE
QT_BEGIN_NAMESPACE_DATAVISUALIZATION
diff --git a/src/datavisualization/utils/shaderhelper_p.h b/src/datavisualization/utils/shaderhelper_p.h
index 3b399e81..9cd7cf14 100644
--- a/src/datavisualization/utils/shaderhelper_p.h
+++ b/src/datavisualization/utils/shaderhelper_p.h
@@ -31,7 +31,7 @@
#include "datavisualizationglobal_p.h"
-class QOpenGLShaderProgram;
+QT_FORWARD_DECLARE_CLASS(QOpenGLShaderProgram)
QT_BEGIN_NAMESPACE_DATAVISUALIZATION
diff --git a/src/datavisualization/utils/utils_p.h b/src/datavisualization/utils/utils_p.h
index 12e70095..f845d894 100644
--- a/src/datavisualization/utils/utils_p.h
+++ b/src/datavisualization/utils/utils_p.h
@@ -31,7 +31,7 @@
#include "datavisualizationglobal_p.h"
-class QLinearGradient;
+QT_FORWARD_DECLARE_CLASS(QLinearGradient)
QT_BEGIN_NAMESPACE_DATAVISUALIZATION