新增qwt源码版本

qwtdemo/qwt/qwt_point_3d.cpp

@@ -0,0 +1,22 @@
+/* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
+ * Qwt Widget Library
+ * Copyright (C) 1997   Josef Wilgen
+ * Copyright (C) 2002   Uwe Rathmann
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the Qwt License, Version 1.0
+ *****************************************************************************/
+
+#include "qwt_point_3d.h"
+
+#ifndef QT_NO_DEBUG_STREAM
+
+QDebug operator<<( QDebug debug, const QwtPoint3D &point )
+{
+    debug.nospace() << "QwtPoint3D(" << point.x() 
+        << "," << point.y() << "," << point.z() << ")";
+    return debug.space();
+}
+
+#endif
+