RAWINPUT.Keyboard: NUMLOCK=ON 时如何检测方向键？

Question

当NUMLOCK=ON时

按键ARROW_UP按下：

data.keyboard.MakeCode = 42;
data.keyboard.VKey = 255;
data.keyboard.Flags = 2;
data.keyboard.Message = 256 (WM_KEYDOWN)

按键ARROW_DOWN按下：

data.keyboard.MakeCode = 42;
data.keyboard.VKey = 255;
data.keyboard.Flags = 2;
data.keyboard.Message = 256 (WM_KEYDOWN)

按键ARROW_LEFT按下：

data.keyboard.MakeCode = 42;
data.keyboard.VKey = 255;
data.keyboard.Flags = 2;
data.keyboard.Message = 256 (WM_KEYDOWN)

按键ARROW_RIGHT按下：

data.keyboard.MakeCode = 42;
data.keyboard.VKey = 255;
data.keyboard.Flags = 2;
data.keyboard.Message = 256 (WM_KEYDOWN)

NUMLOCK=ON时如何检测方向键？

• 当NUMLOCK=OFF时一切正常；
• DirectInput（来自 DirectX 8.0）在这两种情况下都运行良好；

Answer 1

添加标志：RIDEV_NOLEGACY 并过滤 VKey == 255

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