Windows Cosole应用程序，WMI

问题描述

muj.exe中0x00a11e5e处未处理的异常:0xC0000005:访问冲突读取位置0x00000000.

上面指定的运行时错误出现问题.

请帮帮我.

这是生成此类异常的代码

Unhandled exception at 0x00a11e5e in muj.exe: 0xC0000005: Access violation reading location 0x00000000.

Problem with the above specified runtime error.

Please help me out.

Here is the code which generates such an exception

BSTR MethodName = SysAllocString(L"Create");
    BSTR ClassName = SysAllocString(L"Win32_Process");

    IWbemClassObject* pClass = NULL;
    hres = pSvc->GetObject(ClassName, 0, NULL, &pClass, NULL);

    IWbemClassObject* pInParamsDefinition = NULL;
    hres = pClass->GetMethod(MethodName, 0,
        &pInParamsDefinition, NULL);

    IWbemClassObject* pClassInstance = NULL;
    hres = pInParamsDefinition->SpawnInstance(0, &pClassInstance);

    // Create the values for the in parameters
	 VARIANT varComman;
    varComman.vt = VT_BSTR;
	varComman.bstrVal = L"CScript E:/vinay.vbs";

    VARIANT varCommand;
    varCommand.vt = VT_BSTR;
	varCommand.bstrVal = L"CScript E:/mof.vbs";


    // Store the value for the in parameters
	 hres = pClassInstance->Put(L"CommandLine", 0,
        &varComman, 0);
    wprintf(L"The command is: %s\n", V_BSTR(&varComman));

    hres = pClassInstance->Put(L"CommandLine", 0,
        &varCommand, 0);
    wprintf(L"The command is: %s\n", V_BSTR(&varCommand));

	 IWbemClassObject* pOutParam = NULL;
    hres = pSvc->ExecMethod(ClassName, MethodName, 0,
    NULL, pClassInstance, &pOutParam, NULL);

	IWbemClassObject* pOutParams = NULL;
    //hres = pSvc->ExecMethod(ClassName, MethodName, 0,
    //NULL, pClassInstance, &pOutParams, NULL);

    // Execute Method


    if (FAILED(hres))
    {
        cout << "Could not execute method. Error code = 0x"
             << hex << hres << endl;
        VariantClear(&varCommand);
        SysFreeString(ClassName);
        SysFreeString(MethodName);
        pClass->Release();
        pInParamsDefinition->Release();
        pOutParams->Release();
        pSvc->Release();
        pLoc->Release();
        CoUninitialize();
        return 1;               // Program has failed.
    }

    // To see what the method returned,
    // use the following code.  The return value will
    // be in &varReturnValue
    VARIANT varReturnValue;
    hres = pOutParams->Get(_bstr_t(L"ReturnValue"), 0,
        &varReturnValue, NULL, 0);

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