为啥在对话画框的回调函数里调用创建消息框函数会死机进入硬件错误

kassandra · 发表于 2014-3-14 14:04:19

/**********************************************************************************************************
** Function name:      FileBrowserCallBack
** Descriptions:       文件浏览对话框回调函数
** input parameters:   WM_MESSAGE *pMsg：消息
** output parameters: 无
** Returned value:     无
**********************************************************************************************************/
static void FileBrowserCallBack(WM_MESSAGE *pMsg)
{
int Id,NCode;
char buf[30],i,*DIRinf;
u16   file_num = 0;
LISTBOX_Handle hFileBrowseListBox;
WM_HWIN hWin = pMsg->hWin;
hFileBrowseListBox = WM_GetDialogItem(hWin,GUI_ID_LISTBOX0);
switch(pMsg -> MsgId) {

  case WM_INIT_DIALOG:
   MenuDisnable++;
    LISTBOX_SetAutoScrollV (hFileBrowseListBox, 1);
//     FRAMEWIN_AddCloseButton(pMsg->hWin, FRAMEWIN_BUTTON_RIGHT,0);
      FRAMEWIN_AddMaxButton(pMsg->hWin, FRAMEWIN_BUTTON_RIGHT, 0);
      FRAMEWIN_AddMinButton(pMsg->hWin, FRAMEWIN_BUTTON_RIGHT, 0);
   WINDOW_SetDefaultBkColor(GUI_GREEN);
   if(device == SPIFlash)
   {
    FRAMEWIN_SetText(pMsg->hWin,"SPIFlash存储设备");
    strcpy(FilePath,"1:");
    FatFs_Open("1:");
   }
   else if(device == SDCard)
   {
    FRAMEWIN_SetText(pMsg->hWin,"SDCard存储设备");
    strcpy(FilePath,"0:");
    FatFs_Open("0:");//打开SD卡，获取根目录列表
   }
   for(Id = 0;Id < filecount;Id++){
      LISTBOX_AddString(hFileBrowseListBox, (char*)FileList[Id]);
     }
   break;
   case WM_NOTIFY_PARENT:
    Id = WM_GetId(pMsg ->hWinSrc);
    NCode = pMsg ->Data.v;
    switch(NCode) {

      case WM_NOTIFICATION_RELEASED:
       if(Id == Button_ID6){
      file_num = LISTBOX_GetSel(hFileBrowseListBox);//返回值即为选中项所在的行数
          LISTBOX_GetItemText(hFileBrowseListBox,file_num,buf,30);
      FilePath_process(FilePath,buf);
      DIRinf = mymalloc(SRAMEX,30);
      sprintf(DIRinf,"文件夹的大小是%dBytes",exf_fdsize(FilePath));

      MESSAGEBOX_Create("sdfa","dsef",0);                      -------------------------------------------------》》》执行到这一步会死机进入硬件错误，怎么回事呀，硬件错误寄存器信息如下：
      myfree(SRAMEX,DIRinf);
     }
     else if (Id == Button_ID7) {
      FileOpen(hFileBrowseListBox,"..");     //返回上一级
      FRAMEWIN_SetText(pMsg->hWin, (const char*)FilePath);
     } else if (Id == Button_ID8) {
       file_num = LISTBOX_GetSel(hFileBrowseListBox);//返回值即为选中项所在的行数
           LISTBOX_GetItemText(hFileBrowseListBox,file_num,buf,30);
       FileOpen(hFileBrowseListBox,buf);
       FRAMEWIN_SetText(pMsg->hWin, (const char*)FilePath);
     } else if(Id == Button_ID9) {

      ClearPath(FilePath);
      GUI_EndDialog(pMsg->hWin, 1);
      MenuDisnable--;
     }
     break;
    default:
      break;
    }
      break;
  default:
      WM_DefaultProc(pMsg);
    break;
}
}