It is generated by the Designer. But I will still post the code here, see if it helps:

Qt Code: 
  1. #ifndef UI_NEW311_H
  2. #define UI_NEW311_H
  3.  
  4. #include <QtCore/QVariant>
  5. #include <QtGui/QAction>
  6. #include <QtGui/QApplication>
  7. #include <QtGui/QButtonGroup>
  8. #include <QtGui/QHBoxLayout>
  9. #include <QtGui/QMainWindow>
  10. #include <QtGui/QPushButton>
  11. #include <QtGui/QSpacerItem>
  12. #include <QtGui/QStatusBar>
  13. #include <QtGui/QToolBar>
  14. #include <QtGui/QWidget>
  15.  
  16. class Ui_New311Class
  17. {
  18. public:
  19.     QWidget *centralWidget;
  20.     QWidget *widget;
  21.     QHBoxLayout *hboxLayout;
  22.     QPushButton *SimpDlg1;
  23.     QSpacerItem *spacerItem;
  24.     QPushButton *SimpDlg2;
  25.     QSpacerItem *spacerItem1;
  26.     QPushButton *SimpDlg3;
  27.     QToolBar *mainToolBar;
  28.     QStatusBar *statusBar;
  29.  
  30.     void setupUi(QMainWindow *New311Class)
  31.     {
  32.     New311Class->setObjectName(QString::fromUtf8("New311Class"));
  33.     centralWidget = new QWidget(New311Class);
  34.     centralWidget->setObjectName(QString::fromUtf8("centralWidget"));
  35.     widget = new QWidget(centralWidget);
  36.     widget->setObjectName(QString::fromUtf8("widget"));
  37.     widget->setGeometry(QRect(80, 50, 423, 25));
  38.     hboxLayout = new QHBoxLayout(widget);
  39.     hboxLayout->setSpacing(6);
  40.     hboxLayout->setMargin(0);
  41.     hboxLayout->setObjectName(QString::fromUtf8("hboxLayout"));
  42.     SimpDlg1 = new QPushButton(widget);
  43.     SimpDlg1->setObjectName(QString::fromUtf8("SimpDlg1"));
  44.  
  45.     hboxLayout->addWidget(SimpDlg1);
  46.  
  47.     spacerItem = new QSpacerItem(81, 20, QSizePolicy::Expanding, QSizePolicy::Minimum);
  48.  
  49.     hboxLayout->addItem(spacerItem);
  50.  
  51.     SimpDlg2 = new QPushButton(widget);
  52.     SimpDlg2->setObjectName(QString::fromUtf8("SimpDlg2"));
  53.  
  54.     hboxLayout->addWidget(SimpDlg2);
  55.  
  56.     spacerItem1 = new QSpacerItem(91, 20, QSizePolicy::Expanding, QSizePolicy::Minimum);
  57.  
  58.     hboxLayout->addItem(spacerItem1);
  59.  
  60.     SimpDlg3 = new QPushButton(widget);
  61.     SimpDlg3->setObjectName(QString::fromUtf8("SimpDlg3"));
  62.  
  63.     hboxLayout->addWidget(SimpDlg3);
  64.  
  65.     New311Class->setCentralWidget(centralWidget);
  66.     mainToolBar = new QToolBar(New311Class);
  67.     mainToolBar->setObjectName(QString::fromUtf8("mainToolBar"));
  68.     mainToolBar->setOrientation(Qt::Horizontal);
  69.     New311Class->addToolBar(static_cast<Qt::ToolBarArea>(4), mainToolBar);
  70.     statusBar = new QStatusBar(New311Class);
  71.     statusBar->setObjectName(QString::fromUtf8("statusBar"));
  72.     New311Class->setStatusBar(statusBar);
  73.  
  74.     retranslateUi(New311Class);
  75.  
  76.     QSize size(600, 400);
  77.     size = size.expandedTo(New311Class->minimumSizeHint());
  78.     New311Class->resize(size);
  79.  
  80.  
  81.     QMetaObject::connectSlotsByName(New311Class);
  82.     } // setupUi
  83.  
  84.     void retranslateUi(QMainWindow *New311Class)
  85.     {
  86.     New311Class->setWindowTitle(QApplication::translate("New311Class", "New311", 0, QApplication::UnicodeUTF8));
  87.     SimpDlg1->setText(QApplication::translate("New311Class", "SimpDlg1", 0, QApplication::UnicodeUTF8));
  88.     SimpDlg2->setText(QApplication::translate("New311Class", "SimpDlg2", 0, QApplication::UnicodeUTF8));
  89.     SimpDlg3->setText(QApplication::translate("New311Class", "SimpDlg3", 0, QApplication::UnicodeUTF8));
  90.     Q_UNUSED(New311Class);
  91.     } // retranslateUi
  92.  
  93. };
  94.  
  95. namespace Ui {
  96.     class New311Class: public Ui_New311Class {};
  97. } // namespace Ui
  98.  
  99. #endif
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The above is the code for the main window, Now I paste the first dialog code below:

Qt Code: 
  1. #ifndef UI_SIMPDLG1_H
  2. #define UI_SIMPDLG1_H
  3.  
  4. #include <QtCore/QVariant>
  5. #include <QtGui/QAction>
  6. #include <QtGui/QApplication>
  7. #include <QtGui/QButtonGroup>
  8. #include <QtGui/QDialog>
  9. #include <QtGui/QLabel>
  10. #include <QtGui/QLineEdit>
  11. #include <QtGui/QPushButton>
  12.  
  13. class Ui_simpDlg1Class
  14. {
  15. public:
  16.     QLabel *orders2;
  17.     QLabel *prime3itself;
  18.     QLabel *prime5itself;
  19.     QLabel *RestrLabel;
  21.     QPushButton *Reset3;
  22.     QLineEdit *lineEdit_2;
  23.     QLineEdit *RestLineEdit;
  24.  
  25.     void setupUi(QDialog *simpDlg1Class)
  26.     {
  27.     simpDlg1Class->setObjectName(QString::fromUtf8("simpDlg1Class"));
  28.     orders2 = new QLabel(simpDlg1Class);
  29.     orders2->setObjectName(QString::fromUtf8("orders2"));
  30.     orders2->setGeometry(QRect(30, 30, 313, 20));
  31.     prime3itself = new QLabel(simpDlg1Class);
  32.     prime3itself->setObjectName(QString::fromUtf8("prime3itself"));
  33.     prime3itself->setGeometry(QRect(350, 60, 20, 20));
  34.     prime5itself = new QLabel(simpDlg1Class);
  35.     prime5itself->setObjectName(QString::fromUtf8("prime5itself"));
  36.     prime5itself->setGeometry(QRect(30, 60, 12, 20));
  37.     RestrLabel = new QLabel(simpDlg1Class);
  38.     RestrLabel->setObjectName(QString::fromUtf8("RestrLabel"));
  39.     RestrLabel->setGeometry(QRect(30, 100, 187, 16));
  40.     OK3 = new QPushButton(simpDlg1Class);
  41.     OK3->setObjectName(QString::fromUtf8("OK3"));
  42.     OK3->setGeometry(QRect(310, 180, 75, 23));
  43.     Reset3 = new QPushButton(simpDlg1Class);
  44.     Reset3->setObjectName(QString::fromUtf8("Reset3"));
  45.     Reset3->setGeometry(QRect(230, 180, 75, 23));
  46.     lineEdit_2 = new QLineEdit(simpDlg1Class);
  47.     lineEdit_2->setObjectName(QString::fromUtf8("lineEdit_2"));
  48.     lineEdit_2->setGeometry(QRect(50, 60, 295, 20));
  49.     RestLineEdit = new QLineEdit(simpDlg1Class);
  50.     RestLineEdit->setObjectName(QString::fromUtf8("RestLineEdit"));
  51.     RestLineEdit->setGeometry(QRect(50, 130, 291, 20));
  52.  
  53.     retranslateUi(simpDlg1Class);
  54.  
  55.     QSize size(400, 300);
  56.     size = size.expandedTo(simpDlg1Class->minimumSizeHint());
  57.     simpDlg1Class->resize(size);
  58.  
  59.  
  60.     QMetaObject::connectSlotsByName(simpDlg1Class);
  61.     } // setupUi
  62.  
  63.     void retranslateUi(QDialog *simpDlg1Class)
  64.     {
  65.     simpDlg1Class->setWindowTitle(QApplication::translate("simpDlg1Class", "simpDlg1", 0, QApplication::UnicodeUTF8));
  66.     orders2->setText(QApplication::translate("simpDlg1Class", "Please input the orders ", 0, QApplication::UnicodeUTF8));
  67.     prime3itself->setText(QApplication::translate("simpDlg1Class", "-3'", 0, QApplication::UnicodeUTF8));
  68.     prime5itself->setText(QApplication::translate("simpDlg1Class", "5'-", 0, QApplication::UnicodeUTF8));
  69.     RestrLabel->setText(QApplication::translate("simpDlg1Class", "Please enter restrictions here(optional)", 0, QApplication::UnicodeUTF8));
  70.     OK3->setText(QApplication::translate("simpDlg1Class", "Ok", 0, QApplication::UnicodeUTF8));
  71.     Reset3->setText(QApplication::translate("simpDlg1Class", "Reset", 0, QApplication::UnicodeUTF8));
  72.     Q_UNUSED(simpDlg1Class);
  73.     } // retranslateUi
  74.  
  75. };
  76.  
  77. namespace Ui {
  78.     class simpDlg1Class: public Ui_simpDlg1Class {};
  79. } // namespace Ui
  80.  
  81. #endif // UI_SIMPDLG1_H
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