Please excuse this elementary question...but I am just dumb....

I have taken a simplistic Dialog Box and added a Progress Control.
When I did that, my Dialog Box was no longer able to intialize using the
DialogBox macro.

If I remove the Progress Control from the form, the form displays
appropriately.  

Is there something that needs to be done in addition to providing a callback
function for the dialog?

Here is a brief outline of the code (which is quite simplistic).

LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM
lParam)
{
    int wmId, wmEvent, rtn_val = 0;
    PAINTSTRUCT ps;
    HDC hdc;

    switch (message)
    {
    case WM_COMMAND:
        wmId    = LOWORD(wParam);
        wmEvent = HIWORD(wParam);
        // Parse the menu selections:
        switch (wmId)
        {
        case IDM_ABOUT:
            rtn_val = (int)DialogBox(hInst, (LPCTSTR)IDD_FORMVIEW, hWnd,
(DLGPROC)Formview);

            break;
        case IDM_EXIT:
            DestroyWindow(hWnd);
            break;
        default:
            return DefWindowProc(hWnd, message, wParam, lParam);
        }
        break;
    case WM_PAINT:

        hdc = BeginPaint(hWnd, &ps);
        // TODO: Add any drawing code here...
        EndPaint(hWnd, &ps);
        break;
    case WM_DESTROY:
        PostQuitMessage(0);
        break;
    default:
        return DefWindowProc(hWnd, message, wParam, lParam);
    }
    return 0;
}

// Message handler for progress bar form.
LRESULT CALLBACK Formview(HWND hDlg, UINT message, WPARAM wParam, LPARAM
lParam)
{
    switch (message)
    {
    case WM_INITDIALOG:
        return TRUE;

    case WM_COMMAND:
        if (LOWORD(wParam) == IDOK || LOWORD(wParam) == IDCANCEL)
        {
            EndDialog(hDlg, LOWORD(wParam));
            return TRUE;
        }
        break;
    }
    return FALSE;
}

The resource (IDD_FORMVIEW) is a simplistic dialog box with a couple of
Static Text fields and a "STOP" Button.

So I am stuck with the following:
1.) How can I get the form to display (i.e. should I ditch the DialogBox
macro?)
2.) How do I dynamically change the progress bar appearance (i.e. how do I
directly call into the form to change the appearance of  the bar)?

Any help or shove in the right direction would be appreciated.