Visual C++ and MFC Programming 2nd Edition

Visual C++ and MFC Fundamentals Chapter 17: Track-Based Controls

The above caret appears gray. If you want the caret to be completely black, you can call

the CWnd::CreateSolidCaret() method. Its syntax is:

void CreateSolidCaret( int nWidth, int nHeight );

This method creates a rectangular caret of nWidth x nHeight dimensions. Here is an

example:

BOOL CSolidCaretDlg::OnInitDialog()

{

CDialog::OnInitDialog();

// TODO: Add extra initialization here

m_Username.CreateSolidCaret(5, 15);

m_Username.ShowCaret();

return TRUE; // return TRUE unless you set the focus to a control

// EXCEPTION: OCX Property Pages should return FALSE

}

To provide a better designed caret, you can call the CWnd::CreateCaret() method. Its

syntax is:

void CreateCaret(CBitmap* pBitmap);

Before calling this method, you can first design a bitmap, load it, and then pass it as the

pBitmap argument. After initializing and loading the bitmap, to display it in the edit box,

call the CWnd::ShowCaret() method. Here is an example:

BOOL CDialogCaret::OnInitDialog()

{

CDialog::OnInitDialog();

// TODO: Add extra initialization here

CEdit *edtBookTitle;

CBitmap *pBitmap = new CBitmap;

edtBookTitle = reinterpret_cast<CEdit *>(GetDlgItem(IDC_BOOK_TITLE));

pBitmap->LoadBitmap(IDB_BMP_CARET);

edtBookTitle->CreateCaret(pBitmap);

edtBookTitle->ShowCaret();

return TRUE; // return TRUE unless you set the focus to a control

// EXCEPTION: OCX Property Pages should return FALSE

}