C ++-WinAPI获取所有已连接USB设备的列表 [英] C++ - WinAPI get list of all connected USB devices
问题描述
我正在尝试创建一个程序，以对所有连接的USB设备及其端口GUID进行分类.
I'm trying to create a program that will categorize all the connected USB devices and their port GUID.
我找到了一个如何从连接的输入设备获取所有信息的示例:
I found an example of how to get all the information from connected input devices:
#include <windows.h>
#include <iostream>
// Namespace
using namespace std;
// Main
int main()
{
// Program
cout << "USB Device Lister." << endl;
// Get Number Of Devices
UINT nDevices = 0;
GetRawInputDeviceList(NULL, &nDevices, sizeof(RAWINPUTDEVICELIST));
// Got Any?
if (nDevices < 1)
{
// Exit
cout << "ERR: 0 Devices?";
cin.get();
return 0;
}
// Allocate Memory For Device List
PRAWINPUTDEVICELIST pRawInputDeviceList;
pRawInputDeviceList = new RAWINPUTDEVICELIST[sizeof(RAWINPUTDEVICELIST) * nDevices];
// Got Memory?
if (pRawInputDeviceList == NULL)
{
// Error
cout << "ERR: Could not allocate memory for Device List.";
cin.get();
return 0;
}
// Fill Device List Buffer
int nResult;
nResult = GetRawInputDeviceList(pRawInputDeviceList, &nDevices, sizeof(RAWINPUTDEVICELIST));
// Got Device List?
if (nResult < 0)
{
// Clean Up
delete[] pRawInputDeviceList;
// Error
cout << "ERR: Could not get device list.";
cin.get();
return 0;
}
// Loop Through Device List
for (UINT i = 0; i < nDevices; i++)
{
// Get Character Count For Device Name
UINT nBufferSize = 0;
nResult = GetRawInputDeviceInfo(pRawInputDeviceList[i].hDevice, // Device
RIDI_DEVICENAME, // Get Device Name
NULL, // NO Buff, Want Count!
&nBufferSize); // Char Count Here!
// Got Device Name?
if (nResult < 0)
{
// Error
cout << "ERR: Unable to get Device Name character count.. Moving to next device." << endl << endl;
// Next
continue;
}
// Allocate Memory For Device Name
WCHAR* wcDeviceName = new WCHAR[nBufferSize + 1];
// Got Memory
if (wcDeviceName == NULL)
{
// Error
cout << "ERR: Unable to allocate memory for Device Name.. Moving to next device." << endl << endl;
// Next
continue;
}
// Get Name
nResult = GetRawInputDeviceInfo(pRawInputDeviceList[i].hDevice, // Device
RIDI_DEVICENAME, // Get Device Name
wcDeviceName, // Get Name!
&nBufferSize); // Char Count
// Got Device Name?
if (nResult < 0)
{
// Error
cout << "ERR: Unable to get Device Name.. Moving to next device." << endl << endl;
// Clean Up
delete[] wcDeviceName;
// Next
continue;
}
// Set Device Info & Buffer Size
RID_DEVICE_INFO rdiDeviceInfo;
rdiDeviceInfo.cbSize = sizeof(RID_DEVICE_INFO);
nBufferSize = rdiDeviceInfo.cbSize;
// Get Device Info
nResult = GetRawInputDeviceInfo(pRawInputDeviceList[i].hDevice,
RIDI_DEVICEINFO,
&rdiDeviceInfo,
&nBufferSize);
// Got All Buffer?
if (nResult < 0)
{
// Error
cout << "ERR: Unable to read Device Info.. Moving to next device." << endl << endl;
// Next
continue;
}
// Mouse
if (rdiDeviceInfo.dwType == RIM_TYPEMOUSE)
{
// Current Device
cout << endl << "Displaying device " << i + 1 << " information. (MOUSE)" << endl;
wcout << L"Device Name: " << wcDeviceName << endl;
cout << "Mouse ID: " << rdiDeviceInfo.mouse.dwId << endl;
cout << "Mouse buttons: " << rdiDeviceInfo.mouse.dwNumberOfButtons << endl;
cout << "Mouse sample rate (Data Points): " << rdiDeviceInfo.mouse.dwSampleRate << endl;
if (rdiDeviceInfo.mouse.fHasHorizontalWheel)
{
cout << "Mouse has horizontal wheel" << endl;
}
else
{
cout << "Mouse does not have horizontal wheel" << endl;
}
}
// Keyboard
else if (rdiDeviceInfo.dwType == RIM_TYPEKEYBOARD)
{
// Current Device
cout << endl << "Displaying device " << i + 1 << " information. (KEYBOARD)" << endl;
wcout << L"Device Name: " << wcDeviceName << endl;
cout << "Keyboard mode: " << rdiDeviceInfo.keyboard.dwKeyboardMode << endl;
cout << "Number of function keys: " << rdiDeviceInfo.keyboard.dwNumberOfFunctionKeys << endl;
cout << "Number of indicators: " << rdiDeviceInfo.keyboard.dwNumberOfIndicators << endl;
cout << "Number of keys total: " << rdiDeviceInfo.keyboard.dwNumberOfKeysTotal << endl;
cout << "Type of the keyboard: " << rdiDeviceInfo.keyboard.dwType << endl;
cout << "Subtype of the keyboard: " << rdiDeviceInfo.keyboard.dwSubType << endl;
}
// Some HID
else // (rdi.dwType == RIM_TYPEHID)
{
// Current Device
cout << endl << "Displaying device " << i + 1 << " information. (HID)" << endl;
wcout << L"Device Name: " << wcDeviceName << endl;
cout << "Vendor Id:" << rdiDeviceInfo.hid.dwVendorId << endl;
cout << "Product Id:" << rdiDeviceInfo.hid.dwProductId << endl;
cout << "Version No:" << rdiDeviceInfo.hid.dwVersionNumber << endl;
cout << "Usage for the device: " << rdiDeviceInfo.hid.usUsage << endl;
cout << "Usage Page for the device: " << rdiDeviceInfo.hid.usUsagePage << endl;
}
// Delete Name Memory!
delete[] wcDeviceName;
}
// Clean Up - Free Memory
delete[] pRawInputDeviceList;
// Exit
cout << endl << "Finnished.";
cin.get();
return 0;
}
我尝试转换此代码以获取所有已连接的USB设备，但失败了.所以我的问题是收集所需数据的最佳方法是什么?
I tried to convert this code to get all the connected USB devices but failed. So my question is what is the best way to collect the data I'm looking for?
推荐答案
如果要使用所有USB设备，而不仅仅是输入"设备，则需要使用与设备管理器相同的API.
If you want all USB devices, not just "input" devices, then you need to use the same APIs that Device Manager does.
For example, all devices shown by Device Manager can be listed with the help of the SetupDiGetClassDevs function.
要列出USB设备，您需要使用设置为"USB" 的枚举器参数(枚举器是连接设备的总线，例如可以是"PCI"，" PCMCIA"，" USB"用于主计算机总线，它也可以是扩展设备提供的辅助总线，例如"SCSI" ，"FTDIBUS" ，依此类推).有时您可能会发现，您对子设备比对USB连接的父设备本身更感兴趣.
For listing USB devices, you'll want to use the enumerator parameter set to "USB" (the enumerator is the bus where the device is attached, for example it can be "PCI", "PCMCIA", "USB" for the main computer busses, and it can also be a secondary bus provided by an expansion device, e.g. "SCSI", "FTDIBUS", and so on). You may sometimes find that you're more interested in child devices than the USB-attached parent device itself.
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