Visual C++ and MFC Programming 2nd Edition

Visual C++ and MFC Fundamentals Chapter 15: Fundamental Controls

private:

CBitmapButton btnBmpOK, btnBmpCancel, btnBmpHelp;

};

4. Use the constructor to load the bitmaps of each button:

CCompanySheet::CCompanySheet(UINT nIDCaption, CWnd* pParentWnd, UINT

iSelectPage)

:CPropertySheet(nIDCaption, pParentWnd, iSelectPage)

{

m_psh.dwFlags |= PSH_NOAPPLYNOW;

AddPage(&Forms);

AddPage(&Projects);

btnBmpOK.LoadBitmaps(IDB_OK_DEF, IDB_OK_SEL,

IDB_OK_FOC, IDB_OK_DIS);

btnBmpCancel.LoadBitmaps(IDB_CANCEL_NRM, IDB_CANCEL_SEL,

IDB_CANCEL_FOC, IDB_CANCEL_DIS);

btnBmpHelp.LoadBitmaps(IDB_HELP_NRM, IDB_HELP_SEL,

IDB_HELP_FOC, IDB_HELP_DIS);

}

5. To customize the existing buttons, implement the OnInitDialog event of the
   CCompanySheet class as follows (most of the code is used because the buttons were
   already created by default; this means that we have to manually change their style):

BOOL CCompanySheet::OnInitDialog()

{

BOOL bResult = CPropertySheet::OnInitDialog();

// TODO: Add your specialized code here

// We need a handle to each

CButton *btnOK, *btnCancel, *btnHelp;

// Get a handle to each of the existing buttons

btnOK = reinterpret_cast<CButton *>(GetDlgItem(IDOK));

btnCancel = reinterpret_cast<CButton *>(GetDlgItem(IDCANCEL));

btnHelp = reinterpret_cast<CButton *>(GetDlgItem(IDHELP));

// Get the style of the button(s)

LONG GWLOK = GetWindowLong(btnOK->m_hWnd, GWL_STYLE);

LONG GWLCancel = GetWindowLong(btnCancel->m_hWnd, GWL_STYLE);

LONG GWLHelp = GetWindowLong(btnHelp->m_hWnd, GWL_STYLE);

// Change the button's style to BS_OWNERDRAW

SetWindowLong(btnOK->m_hWnd, GWL_STYLE, GWLOK | BS_OWNERDRAW);

SetWindowLong(btnCancel->m_hWnd, GWL_STYLE, GWLCancel |

BS_OWNERDRAW);

SetWindowLong(btnHelp->m_hWnd, GWL_STYLE, GWLHelp |

BS_OWNERDRAW);

// Subclass each button

btnBmpOK.SubclassDlgItem(IDOK, this);

btnBmpCancel.SubclassDlgItem(IDCANCEL, this);

btnBmpHelp.SubclassDlgItem(IDHELP, this);

return bResult;

}

6. Test the application: