Store data from edit box

[Newbie79]

have a question to ask:
I am a newbie in mfc programming.
How can I store and save the value enter by user on an edit box and transfer these data onto a new file. The file maybe a database format or even a normal text file. These data might be delete and revise at a later stage.
Anticipating for your brilliant mind. Thanks

 

[sflam]

There are several ways to do it; you can use ClassWizard to add a data member of

CEdit[\code] type or [code]CString[\code] type that is associated to the edit control.  

Assume the ID of your edit control is [code]ID_MY_EDIT[\code].

Using data member of CEdit type:[code]
    // CMyDialog.h
    class CMyDialog : public CDialog
    {
        ...
        CEdit   m_editMyEdit;
        ...
    };
[\code]
[code]
    // CMyDialog.cpp
    void CMyDialog::DoDataExchange(CDataExchange *pDX)
    {
       ...
       DDX_Control(pDX, ID_MY_EDIT, m_editMyEdit);
       ...
    }
[\code]
Note: the data member m_editMyEdit and the entry in DoDataExchange() is added by ClassWizard.
    
Read text from the edit control:[code]
    CString strMyEdit;
    m_editMyEdit.GetWindowText(strMyEdit);
[\code]

Write text to the edit control:[code]
    CString strMyEdit;
    // Set strMyEdit from external file...
    // ...
    m_editMyEdit.SetWindowText(strMyEdit);
[\code]

Using data member of [code]CString[\code] type required a little extra code, and I normally do not recommend if the dialog's UI logic is complicated.  


Here's another way without using additional data member.  

Read text from the edit control:[code]
    CString strMyEdit;
    GetDlgItemText(ID_MY_EDIT, strMyEdit);
[\code]

Write text to the edit control:[code]
    CString strMyEdit;
    // Set strMyEdit from external file...
    // ...
    SetDlgItemText(ID_MY_EDIT, strMyEdit);
[\code]

HTH
Shyan