trying WinVerify fail

From: bayern (bayern_at_discussions.microsoft.com)
Date: 11/26/04 

Date: Fri, 26 Nov 2004 02:25:04 -0800

hi, I have try WinVerify to verify a signed dll.My program is as following.

If the input file doesn't not exist. I can got the routine exit normally. if
the file is exist, I got a messagebox: instruction is refer to '0xcccccccc'
memory, the memory can't be 'read'.

I am using VS.net 1.0, and the platform is win2000. anyone can help?

BOOL VerifyTrust(char * cFileName)
{
    if(cFileName == NULL ) return FALSE;
    WINTRUST_DATA fTrust;
    WINTRUST_FILE_INFO finfo;

    wchar_t wFileName[260];
        HRESULT ret;

    mbstowcs(wFileName, cFileName, 260);

    fTrust.pPolicyCallbackData = NULL;
    fTrust.pSIPClientData = NULL;
    fTrust.dwUIChoice = WTD_UI_NONE;
    fTrust.fdwRevocationChecks = WTD_REVOKE_NONE;
    fTrust.dwUnionChoice = WTD_CHOICE_FILE;
    fTrust.pFile = &finfo;
    fTrust.dwStateAction = 0;
    fTrust.hWVTStateData = NULL;
        fTrust.dwProvFlags = 0;

    fTrust.cbStruct = sizeof(fTrust);
    finfo.cbStruct = sizeof(finfo);
    finfo.pcwszFilePath= wFileName;
    finfo.hFile = NULL;

        GUID trustAction = WINTRUST_ACTION_GENERIC_VERIFY_V2;

        ret = WinVerifyTrust(NULL,&trustAction, &fTrust);

    if(ret == ERROR_SUCCESS)
        return TRUE;

        else
        {
                char cBuf[40];
                sprintf(cBuf, "%X", GetLastError());
                ::MessageBox(NULL, cBuf, "", MB_OK);
        }

    return FALSE;
}

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