widgetgallery.h Example File
widgets/styles/widgetgallery.h

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 #ifndef WIDGETGALLERY_H
 #define WIDGETGALLERY_H

 #include <QDialog>

 class QCheckBox;
 class QComboBox;
 class QDateTimeEdit;
 class QDial;
 class QGroupBox;
 class QLabel;
 class QLineEdit;
 class QProgressBar;
 class QPushButton;
 class QRadioButton;
 class QScrollBar;
 class QSlider;
 class QSpinBox;
 class QTabWidget;
 class QTableWidget;
 class QTextEdit;

 class WidgetGallery : public QDialog
 {
     Q_OBJECT

 public:
     WidgetGallery(QWidget *parent = 0);

 private slots:
     void changeStyle(const QString &styleName);
     void changePalette();
     void advanceProgressBar();

 private:
     void createTopLeftGroupBox();
     void createTopRightGroupBox();
     void createBottomLeftTabWidget();
     void createBottomRightGroupBox();
     void createProgressBar();

     QPalette originalPalette;

     QLabel *styleLabel;
     QComboBox *styleComboBox;
     QCheckBox *useStylePaletteCheckBox;
     QCheckBox *disableWidgetsCheckBox;

     QGroupBox *topLeftGroupBox;
     QRadioButton *radioButton1;
     QRadioButton *radioButton2;
     QRadioButton *radioButton3;
     QCheckBox *checkBox;

     QGroupBox *topRightGroupBox;
     QPushButton *defaultPushButton;
     QPushButton *togglePushButton;
     QPushButton *flatPushButton;

     QTabWidget *bottomLeftTabWidget;
     QTableWidget *tableWidget;
     QTextEdit *textEdit;

     QGroupBox *bottomRightGroupBox;
     QLineEdit *lineEdit;
     QSpinBox *spinBox;
     QDateTimeEdit *dateTimeEdit;
     QSlider *slider;
     QScrollBar *scrollBar;
     QDial *dial;

     QProgressBar *progressBar;
 };

 #endif