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Vista 无法设置游戏控制器

症状：
系统Vista，几周前DMC4还玩得好好的，这几天突然发现不行了。不论是dx9还是dx10的，就一直黑屏。DMC4Launcher可以进入，但是一设置手柄就卡死。

分析：
起初认为是显卡驱动的问题，更新后无果。 后来想起了dxdiag，载入后发现每次到input那个tab就会卡死（好像中间有几次成功了），于是认为是手柄问题，但是在别的游戏（如smynes）中就工作正常。 后来进入控制面板设置游戏控制器，没有反应。

用VS调试DMC4Launcher以及主程序，前者断在dinput8.dll的一个类似EnumDevices的函数里，后者则是一个奇怪的死循环。后来又调式了游戏控制器选项的rundll32.exe， 跟DMC4Launcher情况一样。

于是去Device Manager，到Human Interfaces Devices中逐个删除，发现一个比较奇怪的设备 Root Enumerated Hid Device。删除之后需要重启，而后竟工作正常了。

想想这几天，更新过Tooya Pro绘图板的驱动，于是打开Painter一看，果然绘图板的压感没了。重装驱动后那个Root Enumerated Hid Device再度出现，而DMC4也随之再次不能进入了。

结论:
Tooya Pro的驱动会导致冲突，影响游戏控制器及有关程序（可能主要是dinput8.dll里的那个函数）。不知道哪里的bug，完全google不到。

临时解决办法就是禁掉Root Enumerated Hid Device，仅当需要用绘图板时才启用。不过老得重启还是很麻烦的。
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