What does this command mean?

[mr.dct]

Hi aamer4yu. I tried to do like you sad but it return this:

#include <QMainWindow>
#include "ui_ShapeChangingDialog.h"
 
class ShapeChangingDialog : public QMainWindow
{
    Q_OBJECT
public:
    ShapeChangingDialog(QWidget *parent = 0);
    void setColumnRange(QChar first, QChar last);
private:
    Ui::ShapeChangingDialog ui;
}

#include <QMainWindow>
#include "ui_ShapeChangingDialog.h"

class ShapeChangingDialog : public QMainWindow
{
    Q_OBJECT
public:
    ShapeChangingDialog(QWidget *parent = 0);
    void setColumnRange(QChar first, QChar last);
private:
    Ui::ShapeChangingDialog ui;
}

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;

ShapeChangingDialog.h:14: error: ‘ShapeChangingDialog’ in namespace ‘Ui’ does not name a type

ShapeChangingDialog.h:14: error: ‘ShapeChangingDialog’ in namespace ‘Ui’ does not name a type

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Can you help me fix this. Thanks !