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# window.cpp Example File
opengl/hellogl/window.cpp

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     #include <QtGui>

     #include "glwidget.h"
     #include "window.h"

     Window::Window()
     {
         glWidget = new GLWidget;

         xSlider = createSlider();
         ySlider = createSlider();
         zSlider = createSlider();

         connect(xSlider, SIGNAL(valueChanged(int)), glWidget, SLOT(setXRotation(int)));
         connect(glWidget, SIGNAL(xRotationChanged(int)), xSlider, SLOT(setValue(int)));
         connect(ySlider, SIGNAL(valueChanged(int)), glWidget, SLOT(setYRotation(int)));
         connect(glWidget, SIGNAL(yRotationChanged(int)), ySlider, SLOT(setValue(int)));
         connect(zSlider, SIGNAL(valueChanged(int)), glWidget, SLOT(setZRotation(int)));
         connect(glWidget, SIGNAL(zRotationChanged(int)), zSlider, SLOT(setValue(int)));

         QHBoxLayout *mainLayout = new QHBoxLayout;
         mainLayout->addWidget(glWidget);
         mainLayout->addWidget(xSlider);
         mainLayout->addWidget(ySlider);
         mainLayout->addWidget(zSlider);
         setLayout(mainLayout);

         xSlider->setValue(15 * 16);
         ySlider->setValue(345 * 16);
         zSlider->setValue(0 * 16);
         setWindowTitle(tr("Hello GL"));
     }

     QSlider *Window::createSlider()
     {
         QSlider *slider = new QSlider(Qt::Vertical);
         slider->setRange(0, 360 * 16);
         slider->setSingleStep(16);
         slider->setPageStep(15 * 16);
         slider->setTickInterval(15 * 16);
         slider->setTickPosition(QSlider::TicksRight);
         return slider;
     }