Re: document class

From:

mfc <mfcprog@googlemail.com>

Newsgroups:

microsoft.public.vc.mfc

Date:

Mon, 27 Sep 2010 13:00:25 -0700 (PDT)

Message-ID:

<09e88a3c-c70f-4624-a965-acea4b5be6c3@k10g2000yqa.googlegroups.com>

Here`s my document class implementation so far with the CProperty
class.

class CProperty
{
public:
    CProperty();
    ~CProperty();

    void SetValue(const CString & name, int value)
    {
        CString svalue;
        svalue.Format(_T("%d"), value);
        SetValue(name, svalue);
    }

    virtual CString GetValue(const CString & name);

    virtual void SetValue(const CString & name, const CString & value);
};

class CMIAppDoc : public CDocument
{
protected:
    CMIAppDoc();
    DECLARE_DYNCREATE(CMIAppDoc)
public:
    virtual BOOL OnNewDocument();
    CProperty *GetProp() {return &XmlFile;};
    void Init(CWnd *wnd);

protected:
    CXmlFile XmlFile;

    DECLARE_MESSAGE_MAP()
};

The document class has the only member of the xml file class (CXmlFile
XmlFile). In the OnNewDocument I will load the xml file. I also set
the CProperty variable pointer in the CDisplay class, so that the
CDisplay class has access to the xml file class if a query will
arrive.

BOOL CMIAppDoc::OnNewDocument()
{
    if (!CDocument::OnNewDocument())
        return FALSE;

    //load xml file
    //XmlFile.LoadUserXml(_T("userdata.xml"));
    XmlFile.LoadUserXml(_T("userdata.xml"));

    //global display class varialbe g_DispInfo -> set CProperty varialbe
in CDisplay class
    g_DispInfo.Init(XmlFile);

    //test: get value from the xml file
    CString value = g_DispInfo.GetValue(_T("display:brightness"));

    return TRUE;
}

In the view, there`s one button installed (so far), and if the user
clicks on this button the following method will be called to open the
CDisplaydialog from the document class.

void CMIAppView::OnBnClickedMenuDisplay()
{
    GetDocument()->Init(this);
}

Before starting the dialog, I will transmit the xmlfile class pointer
from the document class (CXmlFile XmlFile).

void CMIAppDoc::Init(CWnd *wnd)
{
    CDmxDialog dlg(wnd);

    dlg.Init(XmlFile);
    dlg.DoModal();
}

And that`s my dialog class:

class CDmxDialog :
    public CDialog
{
public:
    CDmxDialog(CWnd* pParent = NULL);
    ~CDmxDialog(void);

    virtual BOOL PreTranslateMessage(MSG* pMsg);

    enum { IDD = IDD_DLG_DMX };

    virtual void DoDataExchange(CDataExchange* pDX);
    void Init(CProperty& propdlg);

protected:

    virtual BOOL OnInitDialog();
    //}}AFX_MSG
    DECLARE_MESSAGE_MAP()

    CProperty *propdlg;

};

void CDmxDialog::Init(CProperty& prop)
{
    propdlg = &prop;
}

With the CProperty pointer I have the possiblilty to call the xml file
class to get a name/value pair.

BOOL CDmxDialog::OnInitDialog()
{
    CDialog::OnInitDialog();

    //get value from the xml file class
    CString value = propdlg->GetValue(_T("display::brightness"));

    return TRUE;
}

I`m not sure if it is the way you would suggest... and I didn`t
install the std::map so far, because I do not know which would be the
best way to do that (see one of my earlier posts from today).

best regards
Hans