新增qwt源码版本

qwtdemo/examples/controls/wheeltab.cpp

@@ -0,0 +1,28 @@
+#include "wheeltab.h"
+#include "wheelbox.h"
+#include <qlayout.h>
+
+WheelTab::WheelTab( QWidget *parent ):
+    QWidget( parent )
+{
+    const int numBoxes = 4;
+
+    QGridLayout *layout1 = new QGridLayout();
+    for ( int i = 0; i < numBoxes; i++ )
+    {
+        WheelBox *box = new WheelBox( Qt::Vertical, i );
+        layout1->addWidget( box, i / 2, i % 2 );
+    }
+
+    QGridLayout *layout2 = new QGridLayout();
+    for ( int i = 0; i < numBoxes; i++ )
+    {
+        WheelBox *box = new WheelBox( Qt::Horizontal, i + numBoxes );
+        layout2->addWidget( box, i / 2, i % 2 );
+    }
+
+    QHBoxLayout *layout = new QHBoxLayout( this );
+    layout->addLayout( layout1, 2 );
+    layout->addLayout( layout2, 5 );
+}
+