#include有关Windows，原始鼠标数据的代码的内容 [英] What to #include for code about windows,raw mouse data

问题描述

我发现以下帖子对我自己的项目非常有用.那么这就是新手的问题:要使它起作用，我必须包括什么?

I find the following post very useful to do a project of my own. Here's the newbie question then: what must I include for this to work?

链接: 如何准确测量具有已知DPI的鼠标的英寸或厘米的鼠标移动

内容:

以下代码注册了RAWINPUTDEVICE，因此可以在WM_INPUT中使用.

The following code registers the RAWINPUTDEVICE so it can be used in WM_INPUT.

RAWINPUTDEVICE Rid[1];
Rid[0].usUsagePage = HID_USAGE_PAGE_GENERIC;
Rid[0].usUsage = HID_USAGE_GENERIC_MOUSE; 
Rid[0].dwFlags = RIDEV_INPUTSINK;   
Rid[0].hwndTarget = hWnd;
RegisterRawInputDevices(Rid, 1, sizeof(Rid[0]);

以下代码手动使用Rid变量，两个参数确定自上次启动WM_INPUT以来鼠标移动了多少像素.

The following code acutally uses the Rid variable two determine how many pixels the mouse has moved since the last time WM_INPUT was initiated.

case WM_INPUT: 
{
    UINT dwSize = 40;
    static BYTE lpb[40];

    GetRawInputData((HRAWINPUT)lParam, RID_INPUT, 
                    lpb, &dwSize, sizeof(RAWINPUTHEADER));

    RAWINPUT* raw = (RAWINPUT*)lpb;

    if (raw->header.dwType == RIM_TYPEMOUSE) 
    {
        int xPosRelative = raw->data.mouse.lLastX; // Could be 1, or could be more than 1
        int yPosRelative = raw->data.mouse.lLastY; // Could be 1, or could be more than 1!
    } 
    break;
}

推荐答案

我刚刚找到它.
#include "hidusage.h"

I just found it.
#include "hidusage.h"

这里有一些定义

#define HID_USAGE_GENERIC_POINTER ((USAGE) 0x01)
#define HID_USAGE_GENERIC_MOUSE ((USAGE) 0x02)
#define HID_USAGE_GENERIC_JOYSTICK ((USAGE) 0x04)
#define HID_USAGE_GENERIC_GAMEPAD ((USAGE) 0x05)
#define HID_USAGE_GENERIC_KEYBOARD ((USAGE) 0x06)
#define HID_USAGE_GENERIC_KEYPAD ((USAGE) 0x07)
#define HID_USAGE_GENERIC_SYSTEM_CTL ((USAGE) 0x80)

typedef USHORT USAGE,*PUSAGE;

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