MFC List Box Control Example

#include <afxwin.h>

#define ID_ADDBUTTON     1000
#define ID_DELETEBUTTON  1001
#define ID_AMENDBUTTON   1002
#define ID_EDIT          1003
#define IDC_LIST1        1004

class CSimpleApp : public CWinApp
{
public:
    BOOL InitInstance();
};

class CMainFrame : public CFrameWnd
{
public:
    CMainFrame();

    afx_msg void wAddButtonOnClick();
    afx_msg void wDeleteButtonOnClick();
    afx_msg void wAmendButtonOnClick();
    afx_msg void wListBoxChange();

    DECLARE_MESSAGE_MAP()

    // Child controls
    CButton  wAddButton;
    CButton  wDeleteButton;
    CButton  wAmendButton;
    CEdit    wEdit;
    CListBox wListBox;
};

BOOL CSimpleApp::InitInstance()
{
    m_pMainWnd = new CMainFrame();
    m_pMainWnd->ShowWindow(m_nCmdShow);
    return TRUE;
}

CMainFrame::CMainFrame()
{
    Create(NULL,
           TEXT("MFC List Box Example"),
           WS_OVERLAPPEDWINDOW,
           CRect(25,25,410,250));

    // Create list box
    wListBox.Create(WS_CHILD | WS_VISIBLE | LBS_STANDARD,
                    CRect(10,10,300,110),
                    this,
                    IDC_LIST1);

    // Add initial items
    wListBox.AddString(TEXT("Apple"));
    wListBox.AddString(TEXT("Orange"));
    wListBox.AddString(TEXT("Pear"));

    // Create edit control
    wEdit.Create(WS_CHILD | WS_VISIBLE | WS_BORDER,
                 CRect(10,110,300,140),
                 this,
                 ID_EDIT);

    // Create buttons
    wAddButton.Create(TEXT("Add"),
                      BS_PUSHBUTTON | WS_CHILD | WS_VISIBLE,
                      CRect(10,150,70,180),
                      this,
                      ID_ADDBUTTON);

    wDeleteButton.Create(TEXT("Delete"),
                         BS_PUSHBUTTON | WS_CHILD | WS_VISIBLE,
                         CRect(80,150,140,180),
                         this,
                         ID_DELETEBUTTON);

    wAmendButton.Create(TEXT("Amend"),
                        BS_PUSHBUTTON | WS_CHILD | WS_VISIBLE,
                        CRect(150,150,220,180),
                        this,
                        ID_AMENDBUTTON);
}

BEGIN_MESSAGE_MAP(CMainFrame, CFrameWnd)
    ON_BN_CLICKED(ID_ADDBUTTON, wAddButtonOnClick)
    ON_BN_CLICKED(ID_DELETEBUTTON, wDeleteButtonOnClick)
    ON_BN_CLICKED(ID_AMENDBUTTON, wAmendButtonOnClick)
    ON_LBN_SELCHANGE(IDC_LIST1, wListBoxChange)
END_MESSAGE_MAP()

CSimpleApp MFCApp1;

// Add an item to the list box
afx_msg void CMainFrame::wAddButtonOnClick()
{
    CString strText;
    wEdit.GetWindowText(strText);

    if (!strText.IsEmpty())
    {
        int index = wListBox.AddString(strText);
        wListBox.SetCurSel(index);
        wEdit.SetWindowText(TEXT(""));
    }
}

// Delete the selected item
afx_msg void CMainFrame::wDeleteButtonOnClick()
{
    int index = wListBox.GetCurSel();

    if (index != LB_ERR)
    {
        wListBox.DeleteString(index);
        wEdit.SetWindowText(TEXT(""));
    }
}

// Amend the selected item
afx_msg void CMainFrame::wAmendButtonOnClick()
{
    CString strText;
    wEdit.GetWindowText(strText);

    int index = wListBox.GetCurSel();

    if (!strText.IsEmpty() && index != LB_ERR)
    {
        wListBox.DeleteString(index);
        wListBox.InsertString(index, strText);
        wListBox.SetCurSel(index);
        wEdit.SetWindowText(TEXT(""));
    }
}

// Display the selected list box item in the edit control
afx_msg void CMainFrame::wListBoxChange()
{
    int index = wListBox.GetCurSel();

    if (index != LB_ERR)
    {
        CString strText;
        wListBox.GetText(index, strText);
        wEdit.SetWindowText(strText);
    }
}