Qt Code: 
  1. #ifndef UI_PRACTICE_H
  2. #define UI_PRACTICE_H
  3.  
  4. #include <QtCore/QVariant>
  5. #include <QtGui/QAction>
  6. #include <QtGui/QApplication>
  7. #include <QtGui/QButtonGroup>
  8. #include <QtGui/QGridLayout>
  9. #include <QtGui/QGroupBox>
  10. #include <QtGui/QHeaderView>
  11. #include <QtGui/QLineEdit>
  12. #include <QtGui/QListWidget>
  13. #include <QtGui/QMainWindow>
  14. #include <QtGui/QMenuBar>
  15. #include <QtGui/QPushButton>
  16. #include <QtGui/QSpacerItem>
  17. #include <QtGui/QStatusBar>
  18. #include <QtGui/QToolBar>
  19. #include <QtGui/QVBoxLayout>
  20. #include <QtGui/QWidget>
  21.  
  22. QT_BEGIN_NAMESPACE
  23.  
  24. class Ui_practiceClass
  25. {
  26. public:
  27.     QWidget *centralWidget;
  28.     QGroupBox *groupBox;
  29.     QGridLayout *gridLayout;
  30.     QListWidget *listWidget;
  31.     QVBoxLayout *verticalLayout;
  32.     QLineEdit *lineEdit;
  33.     QPushButton *pushButton;
  34.     QPushButton *pushButton_2;
  35.     QSpacerItem *verticalSpacer;
  36.     QPushButton *pushButton_3;
  37.     QMenuBar *menuBar;
  38.     QToolBar *mainToolBar;
  39.     QStatusBar *statusBar;
  40.  
  41.     void setupUi(QMainWindow *practiceClass)
  42.     {
  43.         if (practiceClass->objectName().isEmpty())
  44.             practiceClass->setObjectName(QString::fromUtf8("practiceClass"));
  45.         practiceClass->resize(663, 638);
  46.         centralWidget = new QWidget(practiceClass);
  47.         centralWidget->setObjectName(QString::fromUtf8("centralWidget"));
  48.         groupBox = new QGroupBox(centralWidget);
  49.         groupBox->setObjectName(QString::fromUtf8("groupBox"));
  50.         groupBox->setGeometry(QRect(9, 9, 641, 531));
  51.         gridLayout = new QGridLayout(groupBox);
  52.         gridLayout->setSpacing(6);
  53.         gridLayout->setContentsMargins(11, 11, 11, 11);
  54.         gridLayout->setObjectName(QString::fromUtf8("gridLayout"));
  55.         listWidget = new QListWidget(groupBox);
  56.         listWidget->setObjectName(QString::fromUtf8("listWidget"));
  57.  
  58.         gridLayout->addWidget(listWidget, 0, 0, 2, 1);
  59.  
  60.         verticalLayout = new QVBoxLayout();
  61.         verticalLayout->setSpacing(6);
  62.         verticalLayout->setObjectName(QString::fromUtf8("verticalLayout"));
  63.         lineEdit = new QLineEdit(groupBox);
  64.         lineEdit->setObjectName(QString::fromUtf8("lineEdit"));
  65.  
  66.         verticalLayout->addWidget(lineEdit);
  67.  
  68.         pushButton = new QPushButton(groupBox);
  69.         pushButton->setObjectName(QString::fromUtf8("pushButton"));
  70.  
  71.         verticalLayout->addWidget(pushButton);
  72.  
  73.         pushButton_2 = new QPushButton(groupBox);
  74.         pushButton_2->setObjectName(QString::fromUtf8("pushButton_2"));
  75.  
  76.         verticalLayout->addWidget(pushButton_2);
  77.  
  78.  
  79.         gridLayout->addLayout(verticalLayout, 0, 1, 1, 1);
  80.  
  81.         verticalSpacer = new QSpacerItem(20, 409, QSizePolicy::Minimum, QSizePolicy::Expanding);
  82.  
  83.         gridLayout->addItem(verticalSpacer, 1, 1, 1, 1);
  84.  
  85.         pushButton_3 = new QPushButton(centralWidget);
  86.         pushButton_3->setObjectName(QString::fromUtf8("pushButton_3"));
  87.         pushButton_3->setGeometry(QRect(300, 550, 75, 23));
  88.         pushButton_3->setMaximumSize(QSize(75, 16777215));
  89.         practiceClass->setCentralWidget(centralWidget);
  90.         menuBar = new QMenuBar(practiceClass);
  91.         menuBar->setObjectName(QString::fromUtf8("menuBar"));
  92.         menuBar->setGeometry(QRect(0, 0, 663, 21));
  93.         practiceClass->setMenuBar(menuBar);
  94.         mainToolBar = new QToolBar(practiceClass);
  95.         mainToolBar->setObjectName(QString::fromUtf8("mainToolBar"));
  96.         practiceClass->addToolBar(Qt::TopToolBarArea, mainToolBar);
  97.         statusBar = new QStatusBar(practiceClass);
  98.         statusBar->setObjectName(QString::fromUtf8("statusBar"));
  99.         practiceClass->setStatusBar(statusBar);
  100.  
  101.         retranslateUi(practiceClass);
  102.  
  103.         QMetaObject::connectSlotsByName(practiceClass);
  104.     } // setupUi
  105.  
  106.     void retranslateUi(QMainWindow *practiceClass)
  107.     {
  108.         practiceClass->setWindowTitle(QApplication::translate("practiceClass", "practice", 0, QApplication::UnicodeUTF8));
  109.         groupBox->setTitle(QApplication::translate("practiceClass", "GroupBox", 0, QApplication::UnicodeUTF8));
  110.         pushButton->setText(QApplication::translate("practiceClass", "Add", 0, QApplication::UnicodeUTF8));
  111.         pushButton_2->setText(QApplication::translate("practiceClass", "Remove", 0, QApplication::UnicodeUTF8));
  112.         pushButton_3->setText(QApplication::translate("practiceClass", "OK", 0, QApplication::UnicodeUTF8));
  113.     } // retranslateUi
  114.  
  115. };
  116.  
  117. namespace Ui {
  118.     class practiceClass: public Ui_practiceClass {};
  119. } // namespace Ui
  120.  
  121. QT_END_NAMESPACE
  122.  
  123. #endif // UI_PRACTICE_H
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they were declared in the ui_practice file and I assumed through inheritance it should work. (and it did) after fixing the way I was accessing them, I was able to build and run the program but then when trying to add/remove it crashes. Thanks for all of your help everyone.