c++ - 打开simul8文件时出错

Question

我想使用 c++ 打开 simul8 文件我做了以下

#include "stdafx.h"
#include "windows.h"
#import "C:\Program Files\SIMUL8\S8.exe" named_guids
using namespace SIMUL8;

int _tmain(int argc, _TCHAR* argv[])
{

IS8Simulation* MYSIMUL8 = NULL;
IUnknown* pUnk = NULL;
HRESULT hr = ::CoCreateInstance(SIMUL8::CLSID_S8Simulation,NULL,CLSCTX_ALL,__uuidof(IUnknown),(void**)&pUnk);
_bstr_t bstrFileName = ::SysAllocString(L"D:\\Demo1.s8");

hr = MYSIMUL8->Open(bstrFileName); 
MYSIMUL8->RunSim(2400);
}

我在 SimTest.exe 中的 0x004017e7 处收到错误消息未处理的异常：0xC0000005：访问冲突读取位置 0x00000000。在 s8.tli

inline HRESULT IS8Simulation::Open ( _bstr_t FileName ) {
    HRESULT _hr = raw_Open(FileName); ON THIS LINE
    if (FAILED(_hr)) _com_issue_errorex(_hr, this, __uuidof(this));
    return _hr;
}

请帮助我做错了什么

Answer 1

我已经解决了这个问题..错误是我没有初始化COM对象我修改了代码如下......

// SimTest.cpp : Defines the entry point for the console application.
//
#include "stdafx.h"
#include "windows.h"
#include "stdio.h"
#import "C:\Program Files\SIMUL8\S8.exe" named_guids
using namespace SIMUL8;

int _tmain(int argc, _TCHAR* argv[])
{
//Simul8.Simulation8 *pObject;
IS8Simulation * MYSIMUL8;
MYSIMUL8=(struct IS8Simulation *) malloc(sizeof(struct IS8Simulation ));


IUnknown * pUnk ;

CoInitialize( NULL );
HRESULT hr = ::CoCreateInstance(SIMUL8::CLSID_S8Simulation ,NULL,CLSCTX_ALL,__uuidof(IUnknown),(void**)&pUnk);


hr = pUnk->QueryInterface(__uuidof(IS8Simulation), (void**)&MYSIMUL8);

_bstr_t bstrFileName = ::SysAllocString(L"D:\\Demo1.s8");


MYSIMUL8->Open(bstrFileName);
MYSIMUL8->Visible = true;
MYSIMUL8->RunSim(2400);



// Uninitialize COM.
//CoUninitialize();
} 

现在我的 Simul8 Demo 正在运行 :-)