Visual C++ and MFC Programming 2nd Edition

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

BOOL CClientAreaDlg::OnInitDialog()

{

CDialog::OnInitDialog();

SetIcon(m_hIcon, TRUE); // Set big icon

SetIcon(m_hIcon, FALSE); // Set small icon

// TODO: Add extra initialization here

CWnd* stcLogo = new CWnd;

stcLogo->CreateEx(WS_EX_DLGMODALFRAME, "STATIC", NULL,

WS_CHILD | WS_VISIBLE | WS_BORDER,

240, 90, 90, 40, m_hWnd, 0x1888);

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

}

In the same way, to get a handle to any control of your application, access its m_hWnd

member variable.

If you had created a window using the Win32 API’s CreateWindow() or

CreateWindowEx() function, or if for any reason an HWND object exists in your

application, you can convert such a window to a CWnd pointer using the

CWnd::FromHandle() method. Its syntax is:

static CWnd* PASCAL FromHandle(HWND hWnd);

Here is an example:

BOOL CDialog1Dlg::OnInitDialog()

{

CDialog::OnInitDialog();

// Set the icon for this dialog. The framework does this automatically

// when the application's main window is not a dialog

SetIcon(m_hIcon, TRUE); // Set big icon

SetIcon(m_hIcon, FALSE); // Set small icon

// TODO: Add extra initialization here

HWND ThisWnd;

ThisWnd = CreateWindow("EDIT", NULL,

WS_CHILD | WS_VISIBLE | WS_BORDER,

20, 100, 140, 200, m_hWnd, NULL, AfxGetInstanceHandle(), NULL);

CWnd *NewWnd;

NewWnd->FromHandle(ThisWnd);

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

}

14.4 Getting Access to a Control.......................................................................