调试发现browser为空,包含ALT相关头文件提示
_CE_ACTIVEX was not defined because this Windows CE SDK does not have DCOM.
_CE_ACTIVEX could be caused to be defined by defining _CE_ALLOW_SINGLE_THREADED_OBJECTS_IN_MTA, but it is recommended that this be done only for single-threaded apps.
_ATL_NO_HOSTING was defined because _CE_ACTIVEX was not defined.