FIX: Edit Control in Property Page Does Not Get Return Keys

RESOLUTION

To work around this problem, you can override the PreTranslateMessage function in your CPropertyPage derived class. In this function, you can check whether the control is an edit control and determine whether it should receive the WM_KEYDOWN message when the ENTER key is pressed.

NOTE: This problem may occur with other controls as well. You can check whether they need the message by sending a WM_GETDLGCODE message to the control and looking for DLGC_WANTALLKEYS or DLGC_WANTMESSAGE. The PreTranslateMessage function, which would accomplish both of these tasks, is included here:

BOOL CMyPropertyPage::PreTranslateMessage(MSG *pMsg)
    {
    if(pMsg->message==WM_KEYDOWN && pMsg->wParam==VK_RETURN)
        {
        static const TCHAR szEdit[] = _T("edit");
        TCHAR szCompare[sizeof(szEdit)+1];
        HWND hFocus = ::GetFocus();

        // Check for "edit" controls which want the RETURN key.
        // If it doesn't want the return key then let it be
        // translated by just calling
        // CPropertyPage::PreTranslateMessage
        ::GetClassName(hFocus, szCompare, sizeof(szCompare));
        if (lstrcmpi(szCompare, szEdit) == 0)
            {
            if(::GetWindowLong(hFocus, GWL_STYLE) & ES_WANTRETURN)
                return FALSE;    // Don't translate...just send on
                                 // to control
            else
                return CPropertyPage::PreTranslateMessage(pMsg);
            }

        // Check for other controls which want the return key
        if (::SendMessage(hFocus,WM_GETDLGCODE,0,0) &
           (DLGC_WANTALLKEYS | DLGC_WANTMESSAGE))
            return FALSE;        // Don't translate it
        };

    return CPropertyPage::PreTranslateMessage(pMsg);
    }