dialog.h Example File
layouts/basiclayouts/dialog.h

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 #ifndef DIALOG_H
 #define DIALOG_H

 #include <QDialog>

 class QAction;
 class QDialogButtonBox;
 class QGroupBox;
 class QLabel;
 class QLineEdit;
 class QMenu;
 class QMenuBar;
 class QPushButton;
 class QTextEdit;

 class Dialog : public QDialog
 {
     Q_OBJECT

 public:
     Dialog();

 private:
     void createMenu();
     void createHorizontalGroupBox();
     void createGridGroupBox();
     void createFormGroupBox();

     enum { NumGridRows = 3, NumButtons = 4 };

     QMenuBar *menuBar;
     QGroupBox *horizontalGroupBox;
     QGroupBox *gridGroupBox;
     QGroupBox *formGroupBox;
     QTextEdit *smallEditor;
     QTextEdit *bigEditor;
     QLabel *labels[NumGridRows];
     QLineEdit *lineEdits[NumGridRows];
     QPushButton *buttons[NumButtons];
     QDialogButtonBox *buttonBox;

     QMenu *fileMenu;
     QAction *exitAction;
 };

 #endif