在WIN10中c读取cpu温度

在Windows 10中，要读取CPU温度需要使用WMI（Windows Management Instrumentation）接口来获取硬件信息。以下是一个简单的C语言程序示例，可以读取CPU温度：

#include <stdio.h>
#include <wbemidl.h>

#pragma comment(lib, "wbemuuid.lib")

int main() {
    HRESULT hres;

    // Step 1: Initialize COM.
    hres = CoInitializeEx(0, COINIT_MULTITHREADED);
    if (FAILED(hres)) {
        printf("Failed to initialize COM library\n");
        return -1;
    }

    // Step 2: Set general COM security levels.
    hres = CoInitializeSecurity(
        NULL,
        -1,
        NULL,
        NULL,
        RPC_C_AUTHN_LEVEL_DEFAULT,
        RPC_C_IMP_LEVEL_IMPERSONATE,
        NULL,
        EOAC_NONE,
        NULL
    );
    if (FAILED(hres)) {
        CoUninitialize();
        printf("Failed to initialize security\n");
        return -1;
    }

    // Step 3: Obtain the initial locator to WMI.
    IWbemLocator* pLoc = NULL;
    hres = CoCreateInstance(
        CLSID_WbemLocator,
        0,
        CLSCTX_INPROC_SERVER,
        IID_IWbemLocator,
        (LPVOID*)&pLoc
    );
    if (FAILED(hres)) {
        CoUninitialize();
        printf("Failed to create IWbemLocator object\n");
        return -1;
    }

    // Step 4: Connect to WMI through the IWbemLocator::ConnectServer method.
    IWbemServices* pSvc = NULL;
    hres = pLoc->ConnectServer(
        _bstr_t(L"ROOT\\WMI"),
        NULL,
        NULL,
        0,
        NULL,
        0,
        0,
        &pSvc
    );
    if (FAILED(hres)) {
        pLoc->Release();
        CoUninitialize();
        printf("Could not connect\n");
        return -1;
    }

    // Step 5: Set security levels for the proxy.
    hres = 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(hres)) {
        pSvc->Release();
        pLoc->Release();
        CoUninitialize();
        printf("Could not set proxy blanket\n");
        return -1;
    }

    // Step 6: Use the IWbemServices pointer to make requests of WMI.
    IEnumWbemClassObject* pEnumerator = NULL;
    hres = pSvc->ExecQuery(
        _bstr_t("WQL"),
        _bstr_t("SELECT * FROM MSAcpi_ThermalZoneTemperature"),
        WBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY,
        NULL,
        &pEnumerator
    );
    if (FAILED(hres)) {
        pSvc->Release();
        pLoc->Release();
        CoUninitialize();
        printf("Query failed\n");
        return -1;
    }

    // Step 7: Get the data from the query in step 6.
    IWbemClassObject* pclsObj;
    ULONG uReturn = 0;
    while (pEnumerator) {
        hres = pEnumerator->Next(WBEM_INFINITE, 1, &pclsObj, &uReturn);
        if (uReturn == 0) {
            break;
        }

        VARIANT vtProp;
        hres = pclsObj->Get(L"CurrentTemperature", 0, &vtProp, 0, 0);
        if (FAILED(hres)) {
            VariantClear(&vtProp);
            pclsObj->Release();
            continue;
        }

        double temp = (double)(vtProp.lVal - 2732.15) / 10.0;
        printf("CPU temperature: %.1lf C\n", temp);

        VariantClear(&vtProp);
        pclsObj->Release();
    }

    // Cleanup.
    pEnumerator->Release();
    pSvc->Release();
    pLoc->Release();
    CoUninitialize();

    return 0;
}

该程序通过WMI接口连接到ROOT\\WMI命名空间，执行查询语句"SELECT * FROM MSAcpi_ThermalZoneTemperature"，获取CPU温度信息。其中，温度值单位为0.1K，需要将其转换为摄氏度（℃）输出。程序中的查询语句是针对Intel CPU的，如果是其他品牌的CPU，可能需要使用不同的查询语句。