EMWIN数字软键盘设计

最近学习stm32的emwin界面，编写了一个数字软键盘的功能，其中遇到了一些问题，也学到了一些经验。我想要实现的功能是在如图所示的界面下，点击文本框弹出软键盘，能够通过软键盘输入0到9和小数点，tab键实现下一格，
输入完毕后点击enter关闭软键盘。
一开始用FRAMWIN工具做了窗口和键盘两个界面，通过判断点击文本框调用软键盘本身是没有输入聚焦的，当采用BUTTON_SetFocussable(hItem, 0)将按键禁止聚焦后，就可以将焦点聚集在文本框上，而如果使用FRAMWIN控件，无法对FRAMWIN窗口禁止聚焦，所以在输入时焦点会聚集在键盘从而无法将键值发送到文本框。
下面是键盘与界面的回调函数

   static void _cbDialogKeyboard(WM_MESSAGE * pMsg) {
  GUI_RECT r;
  unsigned i;
  int     NCode;
  unsigned Id;
  int     Pressed;
  WM_HWIN hItem;
  WM_HWIN hDlg;

    Pressed = 0;
    hDlg = pMsg->hWin;
  switch (pMsg->MsgId) {
        case WM_PAINT:
        WM_GetClientRect(&r); 
        GUI_SetColor(0x000000);
        GUI_DrawRect(r.x0, r.y0, r.x1, r.y1);
        GUI_SetColor(0xffffff);
        GUI_DrawHLine(r.y0 + 1, r.x0 + 1, r.x1 - 2);    
        GUI_DrawVLine(r.x0 + 1, r.y0 + 1, r.y1 - 2);
        GUI_SetColor(0x555555);
        GUI_DrawHLine(r.y1-1, r.x0 + 1, r.x1 - 1); 
        GUI_DrawVLine(r.x1-1, r.y0 + 1, r.y1 - 2); 
        break;

        case WM_INIT_DIALOG:  
            for (i = 0; i < GUI_COUNTOF(_aDialogKeyboard) - 1; i++) {
                hItem = WM_GetDialogItem(hDlg, GUI_ID_USER + i);
                BUTTON_SetFocussable(hItem, 0); 

    }
    WM_GetDialogItem(hDlg, GUI_ID_USER + 12);      //ʲôÒâ˼
    break;  
        case WM_NOTIFY_PARENT:
        Id  = WM_GetId(pMsg->hWinSrc);  
        NCode = pMsg->Data.v;   
        switch (NCode) {
            case WM_NOTIFICATION_CLICKED:   
                Pressed = 1;
            case WM_NOTIFICATION_RELEASED:  
                if ((Id >= GUI_ID_USER) && (Id <= (GUI_ID_USER + GUI_COUNTOF(_aDialogKeyboard) - 2))) {
        int Key;
        if (Id < GUI_ID_USER + 11) {
          char acBuffer[10];
          BUTTON_GetText(pMsg->hWinSrc, acBuffer, sizeof(acBuffer)); /* Get the text of the button */
          Key = acBuffer[0];
        } 
        if (Id == GUI_ID_USER + 11) {
            Key = GUI_KEY_DELETE; 
        }
        if (Id == GUI_ID_USER + 12) {
            Key = GUI_KEY_TAB;    
        }
        GUI_SendKeyMsg(Key, Pressed);                                
      }
      if (Id == GUI_ID_USER + 13){
          WM_DeleteWindow(hDlg);
      }
      break;
    }
  default:
    WM_DefaultProc(pMsg);
  }
}



static void _cbDialogPZT(WM_MESSAGE * pMsg) 
{
    int     i;  
    int     NCode;
    int     Id;
    WM_HWIN hDlg;
    WM_HWIN hItem;


    hDlg = pMsg->hWin;
  switch (pMsg->MsgId) 
    {
    case WM_INIT_DIALOG:
    FRAMEWIN_SetFont(hDlg,&GUI_Font24B_ASCII);
    FRAMEWIN_SetTextAlign(hDlg,GUI_TA_VCENTER|GUI_TA_CENTER);
    FRAMEWIN_AddCloseButton(hDlg, FRAMEWIN_BUTTON_RIGHT, 0);
    FRAMEWIN_AddMaxButton(hDlg, FRAMEWIN_BUTTON_RIGHT, 1);
    FRAMEWIN_AddMinButton(hDlg, FRAMEWIN_BUTTON_RIGHT, 2);
    FRAMEWIN_SetTitleHeight(hDlg,30);
    for (i = 14; i < 30; i++) {
            EDIT_EnableBlink(WM_GetDialogItem(hDlg, GUI_ID_USER + i), 500, 1);
            hItem = WM_GetDialogItem(hDlg, GUI_ID_USER + i);  
            EDIT_SetText(hItem, "");   
        }               
        break;
    case WM_NOTIFY_PARENT:
       Id = WM_GetId(pMsg->hWinSrc); 
       NCode = pMsg->Data.v;        
    switch (NCode) {
        case WM_NOTIFICATION_RELEASED:      
            if ((Id >= GUI_ID_USER + 14) && (Id <= GUI_ID_USER + 29))  {
                Keyboard();
            }
            if (Id == GUI_ID_OK){
                WM_DeleteWindow(hDlg);
            }
            break;
    }
    break;
   default:
       WM_DefaultProc(pMsg);
    }
}

在模拟器上调试成功后，烧进stm32时发现按键盘按键时，按一下按键键盘界面就会隐藏到显示界面后面去了，于是采用WM_SetStayOnTop(hWin, 1)函数使键盘界面始终保持在最前面。