qt 读取windowscpu温度

您可以使用 WMI (Windows Management Instrumentation) 来读取 Windows CPU 温度。以下是一个示例代码片段：

#include <windows.h>
#include <ole2.h>
#include <wbemidl.h>
#include <iostream>
using namespace std;

int main()
{
    HRESULT hr = CoInitializeEx(0, COINIT_MULTITHREADED);
    if (FAILED(hr))
    {
        cerr << "Failed to initialize COM library" << endl;
        return -1;
    }
    hr = CoInitializeSecurity(
        NULL,
        -1,
        NULL,
        NULL,
        RPC_C_AUTHN_LEVEL_DEFAULT,
        RPC_C_IMP_LEVEL_IMPERSONATE,
        NULL,
        EOAC_NONE,
        NULL);
    if (FAILED(hr))
    {
        CoUninitialize();
        cerr << "Failed to initialize security" << endl;
        return -1;
    }
    IWbemLocator* pLoc = NULL;
    hr = CoCreateInstance(CLSID_WbemLocator, 0, CLSCTX_INPROC_SERVER, IID_IWbemLocator, (LPVOID*)&pLoc);
    if (FAILED(hr))
    {
        CoUninitialize();
        cerr << "Failed to create IWbemLocator object" << endl;
        return -1;
    }
    IWbemServices* pSvc = NULL;
    hr = pLoc->ConnectServer(
        _bstr_t(L"ROOT\\WMI"),
        NULL,
        NULL,
        0,
        NULL,
        0,
        0,
        &pSvc);
    if (FAILED(hr))
    {
        pLoc->Release();
        CoUninitialize();
        cerr << "Failed to ConnectServer" << endl;
        return -1;
    }
    hr = CoSetProxyBlanket(
        pSvc,
        RPC_C_AUTHN_WINNT,
        RPC_C_AUTHZ_NONE,
        NULL,
        RPC_C_AUTHN_LEVEL_CALL,
        RPC_C_IMP_LEVEL_IMPERSONATE,
        NULL,
        EOAC_NONE);
    if (FAILED(hr))
    {
        pSvc->Release();
        pLoc->Release();
        CoUninitialize();
        cerr << "Failed to set proxy blanket" << endl;
        return -1;
    }
    IEnumWbemClassObject* pEnumerator = NULL;
    hr = pSvc->ExecQuery(
        _bstr_t(L"WQL"),
        _bstr_t(L"SELECT * FROM MSAcpi_ThermalZoneTemperature"),
        WBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY,
        NULL,
        &pEnumerator);
    if (FAILED(hr))
    {
        pSvc->Release();
        pLoc->Release();
        CoUninitialize();
        cerr << "Failed to execute query" << endl;
        return -1;
    }
    IWbemClassObject* pClsObj = NULL;
    ULONG uReturn = 0;
    while (pEnumerator)
    {
        hr = pEnumerator->Next(WBEM_INFINITE, 1, &pClsObj, &uReturn);
        if (uReturn == 0)
            break;
        VARIANT vtTemperature;
        hr = pClsObj->Get(L"CurrentTemperature", 0, &vtTemperature, NULL, NULL);
        if (SUCCEEDED(hr))
        {
            int nTemperature = vtTemperature.intVal / 10 - 273;
            cout << "CPU temperature: " << nTemperature << "℃" << endl;
        }
        VariantClear(&vtTemperature);
        pClsObj->Release();
    }
    pEnumerator->Release();
    pSvc->Release();
    pLoc->Release();
    CoUninitialize();
    return 0;
}

此代码将读取 `MSAcpi_ThermalZoneTemperature` WMI 类中 `CurrentTemperature` 属性的值，该属性表示当前的温度。由于这个值以 0.1 摄氏度为单位，并且以开尔文为单位，则需要进行适当的计算，以将其转换为摄氏度。