Hi to all..I'm creating a application,object QMainWindow. I have created application.in UI form I have dragged QGraphicsView. I have created Graphic scene also. I'm posting the code.i'm able to get scene but it by deafult coming at topleft corner. other than coming inside QGraphicsView.suggest me,where I might have gone wrong.
Qt Code: 
  1. #include <QtGui/QApplication>
  2. #include "mainwindow.h"
  3. int main(int argc, char *argv[])
  4. {
  5.      QApplication a(argc, argv);
  6.      MainWindow w;
  7.      w.show();
  8.     return a.exec();
  9. }
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Qt Code: 
  1. #ifndef MAINWINDOW_H
  2. #define MAINWINDOW_H
  3.  
  4. #include <QMainWindow>
  5. #include <QGraphicsView>
  6. #include <QGraphicsScene>
  7. #include <QBrush>
  8.  
  9.  
  10.  namespace Ui {
  11. class MainWindow;
  12. }
  13.  
  14. class MainWindow : public QMainWindow {
  15. Q_OBJECT
  16. public:
  17. MainWindow(QWidget *parent = 0);
  18. ~MainWindow();
  19.  
  20. protected:
  21. void changeEvent(QEvent *e);
  22.  
  23.  private:
  24. Ui::MainWindow *ui;
  25.  };
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Qt Code: 
  1. #include "mainwindow.h"
  2. #include "ui_mainwindow.h"
  3.  
  4.  MainWindow::MainWindow(QWidget *parent) :
  5.   QMainWindow(parent),
  6.  ui(new Ui::MainWindow)
  7.  {
  8.    ui->setupUi(this);
  9.  
  10.        QGraphicsView *view = new QGraphicsView(this);
  12.     scene->setBackgroundBrush(Qt::red);
  13.     view->setScene(scene);
  14.    }
  15.  
  16.   MainWindow::~MainWindow()
  17.  {
  18.    delete ui;
  19.   }
  20.  
  21.   void MainWindow::changeEvent(QEvent *e)
  22.   {
  23.   QMainWindow::changeEvent(e);
  24.    switch (e->type()) {
  25.    case QEvent::LanguageChange:
  26.       ui->retranslateUi(this);
  27.       break;
  28.    default:
  29.       break;
  30.    }
  31.    }
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I'm insering the image also.image.png