创建的纯资源DLL（电量图标）系统始终加载不上是什么原因？内付代码

首先是注册表的修改：
[HKEY_LOCAL_MACHINE\Security\ResOver\Bitmaps]
"BaseDll"=string:"batteryIcon.dll"
"BatteryIconIdStart"=dword:100
"BatteryIconLevels"=dword:1


BaseDll points to the DLL from which overridden bitmaps and icons will be loaded. BatteryIconIdStart is the resource ID where the battery icons begin. BatteryIconLevels is the number of levels of granularity to be implemented.

In the override dll, the overridden icons must be in consecutive order so that empty would be at BatteryIconIdStart, then the next level at BatteryIconIdStart + 1, etc.

资源代码：resource.h
#define IDI_ICON1                       101
#define IDI_ICON2                       102
#define IDI_ICON3                       103
#define IDI_ICON4                       104
#define IDI_ICON5                       105
#define IDI_ICON6                       106
#define IDI_ICON7                       107

def文件好像写不写都可以，我还是写了，虽然没有导出函数

大侠帮忙！！为啥？