controllerwindow.h Example File
widgets/windowflags/controllerwindow.h
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    ** This file is part of the documentation of the Qt Toolkit.
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    #ifndef CONTROLLERWINDOW_H
    #define CONTROLLERWINDOW_H
    #include <QWidget>
    #include "previewwindow.h"
    class QCheckBox;
    class QGroupBox;
    class QLabel;
    class QPushButton;
    class QRadioButton;
    class ControllerWindow : public QWidget
    {
        Q_OBJECT
    public:
        ControllerWindow();
    private slots:
        void updatePreview();
    private:
        void createTypeGroupBox();
        void createHintsGroupBox();
        QCheckBox *createCheckBox(const QString &text);
        QRadioButton *createRadioButton(const QString &text);
        PreviewWindow *previewWindow;
        QGroupBox *typeGroupBox;
        QGroupBox *hintsGroupBox;
        QPushButton *quitButton;
        QRadioButton *windowRadioButton;
        QRadioButton *dialogRadioButton;
        QRadioButton *sheetRadioButton;
        QRadioButton *drawerRadioButton;
        QRadioButton *popupRadioButton;
        QRadioButton *toolRadioButton;
        QRadioButton *toolTipRadioButton;
        QRadioButton *splashScreenRadioButton;
        QCheckBox *msWindowsFixedSizeDialogCheckBox;
        QCheckBox *x11BypassWindowManagerCheckBox;
        QCheckBox *framelessWindowCheckBox;
        QCheckBox *windowTitleCheckBox;
        QCheckBox *windowSystemMenuCheckBox;
        QCheckBox *windowMinimizeButtonCheckBox;
        QCheckBox *windowMaximizeButtonCheckBox;
        QCheckBox *windowContextHelpButtonCheckBox;
        QCheckBox *windowShadeButtonCheckBox;
        QCheckBox *windowStaysOnTopCheckBox;
    };
    #endif