The view class CWordView has only two fields. The field m_pWordDoc is a pointer to the document class object. Similar to the Calc application, we need to keep track of double-clicks. The field m_bDoubleclick is first set to false when the user clicks the mouse key, and then set to true if is followed by a double-click. When the user drags the mouse, we note the first and last position. However, in the case of a double-click, a word will be marked, and we should not finish the marking process by calling MouseUp in the document class.

const int LINE_WIDTH = 500;
const int LINE_HEIGHT = 500;

class CWordView : public CView
{
  private:
    DECLARE_DYNCREATE(CWordView)
    DECLARE_MESSAGE_MAP()
    CWordView();

  public:
    afx_msg int OnCreate(LPCREATESTRUCT lpCreateStruct);

    virtual void OnInitialUpdate();
    virtual void OnPrepareDC(CDC* pDC,
                             CPrintInfo* pInfo = NULL);

    afx_msg void OnSize(UINT uType, int cxClient,
        ...