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# flowlayout.h Example File
layouts/flowlayout/flowlayout.h

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     #ifndef FLOWLAYOUT_H
     #define FLOWLAYOUT_H

     #include <QLayout>
     #include <QRect>
     #include <QWidgetItem>
     class FlowLayout : public QLayout
     {
     public:
         FlowLayout(QWidget *parent, int margin = -1, int hSpacing = -1, int vSpacing = -1);
         FlowLayout(int margin = -1, int hSpacing = -1, int vSpacing = -1);
         ~FlowLayout();

         void addItem(QLayoutItem *item);
         int horizontalSpacing() const;
         int verticalSpacing() const;
         Qt::Orientations expandingDirections() const;
         bool hasHeightForWidth() const;
         int heightForWidth(int) const;
         int count() const;
         QLayoutItem *itemAt(int index) const;
         QSize minimumSize() const;
         void setGeometry(const QRect &rect);
         QSize sizeHint() const;
         QLayoutItem *takeAt(int index);

     private:
         int doLayout(const QRect &rect, bool testOnly) const;
         int smartSpacing(QStyle::PixelMetric pm) const;

         QList<QLayoutItem *> itemList;
         int m_hSpace;
         int m_vSpace;
     };

     #endif