VS2010 集成标准com组件

#include <Windows.h>
#include <stdio.h>
 
// import后，会提示找不到对应的SignCtrl.tlh文件，只需要对项目重新编译一下，在项目的Debug目录下，就会有SignCtrl.tlh文件
#import "C:/Users/Administrator/Desktop/jzbank/CallComSln/CallCom/CallCom/SignCtrl.ocx" no_namespace
 
extern "C"
{
    typedef HRESULT (__stdcall *pFunc)(REFCLSID rclsid,REFIID riid,LPVOID * ppv);
}    
 
void main(){
 
     //谨记谨记,必须先调用 CoInitialize(NULL);
    if (!SUCCEEDED(CoInitialize(NULL)))
    {
        return;
    }
 
    HINSTANCE hdllInst = LoadLibrary("SignCtrl.ocx");  
 
    pFunc func=(pFunc)GetProcAddress(hdllInst,"DllGetClassObject");  
 
    if (func != NULL)
    {  
 
        CLSID CLSID_SignCtrl_ocx;
        HRESULT hr = CLSIDFromString(L"{7CDD83B9-75FA-4C7A-89A6-1ABC55126D57}", &CLSID_SignCtrl_ocx);
        if (!SUCCEEDED(hr))
        {
            return;
        }
 
        IClassFactory* pcf = NULL;
        hr = func(CLSID_SignCtrl_ocx, IID_IClassFactory,(void**)&pcf);  
 
        if (SUCCEEDED(hr) && (pcf != NULL))
        {
            // 创建 IID
            IID CLSID_DSignCtrl;
 
            //_DSignCtrl的标识{05c0ba8b-20f1-40ee-ae8c-cb78d9809203} 在tlh文件里
            CLSID_DSignCtrl.Data1=0x05c0ba8b;
            CLSID_DSignCtrl.Data2=0X20f1;
            CLSID_DSignCtrl.Data3=0X40ee;  
 
            CLSID_DSignCtrl.Data4[]=0Xae;
            CLSID_DSignCtrl.Data4[]=0X8c;
            CLSID_DSignCtrl.Data4[]=0Xcb;
            CLSID_DSignCtrl.Data4[]=0X78;
            CLSID_DSignCtrl.Data4[]=0Xd9;
            CLSID_DSignCtrl.Data4[]=0X80;
            CLSID_DSignCtrl.Data4[]=0X92;
            CLSID_DSignCtrl.Data4[]=0X03;  
 
            // SignCtrl.ocx向外暴露的
            _DSignCtrl* pCall = NULL;
 
            // 拿到实例
            hr = pcf->CreateInstance(NULL, CLSID_DSignCtrl, (void**)&pCall);  
 
            if (SUCCEEDED(hr)   && (pCall != NULL))
            {
                pCall->AboutBox();
            }
 
            pcf->Release();
 
        } else{
            printf("false");
 
        }
    }   
 
    FreeLibrary(hdllInst);
 
    // 谨记谨记, 调用 CoInitialize(NULL);后要销毁
    CoUninitialize(); 
 
    getchar();
}