break;
  }
  WM_DefaultProc(pMsg);
}

/*********************************************************************
*
*       Exported routines:  Create
*
**********************************************************************
*/
/*********************************************************************
*
*       DROPDOWN_CreateEx
*/
DROPDOWN_Handle DROPDOWN_CreateEx(int x0, int y0, int xsize, int ysize, WM_HWIN hParent,
                                  int WinFlags, int ExFlags, int Id)
{
  DROPDOWN_Handle hObj;
  hObj = WM_CreateWindowAsChild(x0, y0, xsize, -1, hParent, WinFlags, _DROPDOWN_Callback,
                                sizeof(DROPDOWN_Obj) - sizeof(WM_Obj));
  if (hObj) {
    DROPDOWN_Obj* pObj;
    WM_LOCK();
    pObj = DROPDOWN_H2P(hObj);
    /* Init sub-classes */
    GUI_ARRAY_CREATE(&pObj->Handles);
    /* init widget specific variables */
    WIDGET__Init(&pObj->Widget, Id, WIDGET_STATE_FOCUSSABLE);
    pObj->Flags          = ExFlags;
    pObj->Props          = DROPDOWN__DefaultProps;
    pObj->ScrollbarWidth = 0;
    INIT_ID(pObj);
    pObj->ySizeEx = ysize;
    DROPDOWN__AdjustHeight(hObj, pObj);
    WM_UNLOCK();
  }
  return hObj;
}

/*********************************************************************
*
*       Exported routines:  Various methods
*
**********************************************************************
*/

/*********************************************************************
*
*       DROPDOWN_Collapse
*/
void DROPDOWN_Collapse(DROPDOWN_Handle hObj) {
  DROPDOWN_Obj* pObj;
  if (hObj) {
    WM_LOCK();
    pObj = DROPDOWN_H2P(hObj);
    if (pObj->hListWin) {
      WM_DeleteWindow(pObj->hListWin);
      pObj->hListWin = 0;
    }
    WM_UNLOCK();
  }
}

/*********************************************************************
*
*       DROPDOWN_Expand
*/
void DROPDOWN_Expand(DROPDOWN_Handle hObj) {
  int xSize, ySize, i, NumItems;
  WM_HWIN hLst;
  GUI_RECT r;
  WM_HWIN hParent;
  WM_Obj* pParent;
  DROPDOWN_Obj* pObj;
  if (hObj) {
    WM_LOCK();
    pObj = DROPDOWN_H2P(hObj);
    if  (pObj->hListWin == 0) {
      hParent = WM_GetParent(hObj);
      pParent = WM_H2P(hParent);
      xSize = WM__GetWindowSizeX(&pObj->Widget.Win);
      ySize = pObj->ySizeEx;
      NumItems = _GetNumItems(pObj);
      /* Get coordinates of window in client coordiantes of parent */
      r = pObj->Widget.Win.Rect;
      GUI_MoveRect(&r, -pParent->Rect.x0, -pParent->Rect.y0);
      if (pObj->Flags & DROPDOWN_CF_UP) {
        r.y0 -= ySize;
      } else {
        r.y0 = r.y1;
      }
      hLst = LISTBOX_CreateAsChild(NULL, WM_GetParent(hObj), r.x0, r.y0
                         , xSize, ySize, WM_CF_SHOW);
      if (pObj->Flags & DROPDOWN_SF_AUTOSCROLLBAR) {
        LISTBOX_SetScrollbarWidth(hLst, pObj->ScrollbarWidth);
        LISTBOX_SetAutoScrollV(hLst, 1);
      }
      for (i = 0; i< NumItems; i++) {
        LISTBOX_AddString(hLst, _GetpItem(pObj, i));
      }
      for (i = 0; i < GUI_COUNTOF(pObj->Props.aBackColor); i++) {
        LISTBOX_SetBkColor(hLst, i, pObj->Props.aBackColor[i]);
      }
      for (i = 0; i < GUI_COUNTOF(pObj->Props.aTextColor); i++) {
        LISTBOX_SetTextColor(hLst, i, pObj->Props.aTextColor[i]);
      }
      LISTBOX_SetItemSpacing(hLst, pObj->ItemSpacing);
      LISTBOX_SetFont(hLst, pObj->Props.pFont);
      WM_SetFocus(hLst);
      pObj->hListWin = hLst;
      LISTBOX_SetOwner(hLst, hObj);
      LISTBOX_SetSel(hLst, pObj->Sel);
      WM_NotifyParent(hObj, WM_NOTIFICATION_CLICKED);
    }
    WM_UNLOCK();
  }
}

/*********************************************************************
*
*       DROPDOWN_AddKey
*/
void DROPDOWN_AddKey(DROPDOWN_Handle hObj, int Key) {
  if (hObj) {
    WM_LOCK();
    switch (Key) {
      case GUI_KEY_DOWN:
        DROPDOWN_IncSel(hObj);
        break;
      case GUI_KEY_UP:
        DROPDOWN_DecSel(hObj);
        break;
      default:
        _SelectByKey(hObj, Key);
        break;
    }
    WM_UNLOCK();
  }
}

/*********************************************************************
*
*       DROPDOWN_AddString
*/
void DROPDOWN_AddString(DROPDOWN_Handle hObj, const char* s) {
  DROPDOWN_Obj* pObj;
  if (hObj && s) {
    WM_LOCK();
    pObj = DROPDOWN_H2P(hObj);
    GUI_ARRAY_AddItem(&pObj->Handles, s, strlen(s) + 1);
    DROPDOWN_Invalidate(hObj);
    WM_UNLOCK();
  }
}

/*********************************************************************
*
*       DROPDOWN_GetNumItems
*/
int DROPDOWN_GetNumItems(DROPDOWN_Handle hObj) {
  DROPDOWN_Obj* pObj;
  int r = 0;
  if (hObj) {
    WM_LOCK();
    pObj = DROPDOWN_H2P(hObj);
    ASSERT_IS_VALID_PTR(pObj);
    r = _GetNumItems(pObj);
    WM_UNLOCK();
  }
  return r;
}

/*********************************************************************
*
*       DROPDOWN_SetFont
*/
void DROPDOWN_SetFont(DROPDOWN_Handle hObj, const GUI_FONT GUI_UNI_PTR * pfont) {
  int OldHeight;
  DROPDOWN_Obj* pObj;
  if (hObj) {
    WM_LOCK();
    pObj = DROPDOWN_H2P(hObj);
    ASSERT_IS_VALID_PTR(pObj);
    OldHeight = GUI_GetYDistOfFont(pObj->Props.pFont);
    pObj->Props.pFont = pfont;
    DROPDOWN__AdjustHeight(hObj, pObj);
    DROPDOWN_Invalidate(hObj);
    if (pObj->hListWin) {
      if (OldHeight != GUI_GetYDistOfFont(pObj->Props.pFont)) {
        DROPDOWN_Collapse(hObj);
        DROPDOWN_Expand(hObj);
      }
      LISTBOX_SetFont(pObj->hListWin, pfont);
    }
    WM_UNLOCK();
  }
}

/*********************************************************************
*
*       DROPDOWN_SetBkColor
*/
void DROPDOWN_SetBkColor(DROPDOWN_Handle hObj, unsigned int Index, GUI_COLOR color) {
  DROPDOWN_Obj* pObj;
  if (hObj) {
    if (Index < GUI_COUNTOF(pObj->Props.aBackColor)) {
      WM_LOCK();
      pObj = DROPDOWN_H2P(hObj);
      ASSERT_IS_VALID_PTR(pObj);
      pObj->Props.aBackColor[Index] = color;
      DROPDOWN_Invalidate(hObj);
      if (pObj->hListWin) {
        LISTBOX_SetBkColor(pObj->hListWin, Index, color);
      }
      WM_UNLOCK();
    }
  }
}

/*********************************************************************
*
*       DROPDOWN_SetTextColor
*/
void DROPDOWN_SetTextColor(DROPDOWN_Handle hObj, unsigned int Index, GUI_COLOR color) {
  DROPDOWN_Obj* pObj;
  if (hObj) {
    if (Index < GUI_COUNTOF(pObj->Props.aBackColor)) {
      WM_LOCK();
      pObj = DROPDOWN_H2P(hObj);
      ASSERT_IS_VALID_PTR(pObj);
      pObj->Props.aTextColor[Index] = color;
      DROPDOWN_Invalidate(hObj);
      if (pObj->hListWin) {
        LISTBOX_SetTextColor(pObj->hListWin, Index, color);
      }
      WM_UNLOCK();
    }
  }
}

/*********************************************************************
*
*       DROPDOWN_SetSel
*/
void DROPDOWN_SetSel(DROPDOWN_Handle hObj, int Sel) {
  int NumItems, MaxSel;
  DROPDOWN_Obj* pObj;
  if (hObj) {
    WM_LOCK();
    pObj = DROPDOWN_H2P(hObj);
    ASSERT_IS_VALID_PTR(pObj);
    NumItems = _GetNumItems(pObj);
    MaxSel = NumItems ? NumItems-1 : 0;
    if (Sel > MaxSel) {
      Sel = MaxSel;
    }
    if (Sel != pObj->Sel) {
      pObj->Sel = Sel;
      DROPDOWN_Invalidate(hObj);
      WM_NotifyParent(hObj, WM_NOTIFICATION_SEL_CHANGED);
    }
    WM_UNLOCK();
  }
}

/*********************************************************************
*
*       DROPDOWN_IncSel
*/
void DROPDOWN_IncSel(DROPDOWN_Handle hObj) {
  int Sel = DROPDOWN_GetSel(hObj);
  DROPDOWN_SetSel(hObj, Sel+1);
}

/*********************************************************************
*
*       DROPDOWN_DecSel
*/
void DROPDOWN_DecSel(DROPDOWN_Handle hObj) {
  int Sel = DROPDOWN_GetSel(hObj);
  if (Sel)
	  Sel--;
  DROPDOWN_SetSel(hObj, Sel);
}

int  DROPDOWN_GetSel (DROPDOWN_Handle hObj) {
  int r = 0;
  DROPDOWN_Obj* pObj;
  if (hObj) {
    WM_LOCK();
    pObj = DROPDOWN_H2P(hObj);
    ASSERT_IS_VALID_PTR(pObj);
    r = pObj->Sel;
    WM_UNLOCK();
  }
  return r;
}

/*********************************************************************
*
*       DROPDOWN_SetScrollbarWidth
*/
void DROPDOWN_SetScrollbarWidth(DROPDOWN_Handle hObj, unsigned Width) {
  DROPDOWN_Obj* pObj;
  if (hObj) {
    WM_LOCK();
    pObj = DROPDOWN_H2P(hObj);
    ASSERT_IS_VALID_PTR(pObj);
    if (Width != (unsigned)pObj->ScrollbarWidth) {
      pObj->ScrollbarWidth = Width;
      if (pObj->hListWin) {
        LISTBOX_SetScrollbarWidth(pObj->hListWin, Width);
      }
    }
    WM_UNLOCK();
  }  
}

/*********************************************************************
*
*       DROPDOWN_SetDefaultFont
*/
void DROPDOWN_SetDefaultFont(const GUI_FONT* pFont) {
  DROPDOWN__DefaultProps.pFont = pFont;
}

/*********************************************************************
*
*       DROPDOWN_GetDefaultFont
*/
const GUI_FONT GUI_UNI_PTR * DROPDOWN_GetDefaultFont(void) {
  return DROPDOWN__DefaultProps.pFont;
}


#else                            /* Avoid problems with empty object modules */
  void DROPDOWN_C(void) {}
#endif