IDebugBinder3::GetMemoryContext64

Applies to: Visual Studio Visual Studio for Mac

Note

This article applies to Visual Studio 2017. If you're looking for the latest Visual Studio documentation, see Visual Studio documentation. We recommend upgrading to the latest version of Visual Studio. Download it here

Converts either an object location or a 64-bit memory address to a memory context.

Syntax

HRESULT GetMemoryContext64 (
    IDebugField*           pField,
    UINT64                 uConstant,
    IDebugMemoryContext2** ppMemCxt
);

int GetMemoryContext64 (
    IDebugField              pField,
    ulong                    uConstant,
    out IDebugMemoryContext2 ppMemCxt
);

Parameters

pField
[in] An IDebugField that describes the object to locate. If NULL, then use dwConstant instead.

uConstant
[in] A 64-bit memory address, such as 0x50000000.

ppMemCxt
[out] Returns the IDebugMemoryContext2 interface that represents the address of the object, or the address in memory.

Return Value

If successful, returns S_OK; otherwise, returns an error code.

Example

The following examples creates an object that implements the IDebugBinder3 interface and uses this method to retrieve the memory context.

HRESULT CValueProperty::GetMemoryContext ( IDebugMemoryContext2** out_ppMemoryContext )
{
    // precondition
    REQUIRE( NULL != out_ppMemoryContext );

    if (NULL == out_ppMemoryContext)
        return E_POINTER;

    *out_ppMemoryContext = NULL;

    INVARIANT( this );

    if (!this->ClassInvariant())
        return E_UNEXPECTED;

    if (VT_EMPTY == this->m_VarValue.vt)
    {
        return E_FAIL;
    }

    // function body
    if (NULL != this->m_pBinder)
    {
        UINT64 dwOffset = 0;

        DEBUG_PROPERTY_INFO dpInfo;
        HRESULT HR = this->GetPropertyInfo(DEBUGPROP_INFO_VALUE,
                                           10, // RADIX
                                           DEFAULT_TIMEOUT,
                                           NULL,
                                           0,
                                           &dpInfo);
        if (ENSURE( S_OK == HR ))
        {
            REQUIRE( NULL != dpInfo.bstrValue );
            REQUIRE( NULL == dpInfo.bstrName );
            REQUIRE( NULL == dpInfo.bstrFullName );
            REQUIRE( NULL == dpInfo.bstrType );
            REQUIRE( NULL == dpInfo.pProperty );

            wchar_t * end;
            dwOffset = _wcstoui64(dpInfo.bstrValue, &end, 0); // base 0 to allow 0x if it's ever output
            ::SysFreeString(dpInfo.bstrValue);
        }

        if (CComQIPtr<IDebugBinder3> binder3 = this->m_pBinder)
            HR = binder3->GetMemoryContext64(NULL, dwOffset, out_ppMemoryContext);
        else
            HR = this->m_pBinder->GetMemoryContext(NULL, (DWORD)(__int32)dwOffset, out_ppMemoryContext);

        if (ENSURE( S_OK == HR ))
        {
            REQUIRE( NULL != *out_ppMemoryContext );
        }
    }

    // postcondition
    INVARIANT( this );

    HRESULT HR = E_FAIL;

    if (NULL != *out_ppMemoryContext)
    {
        HR = S_OK;
    }

    return HR;
}

See also

• IDebugBinder3