[2/4] ole32: Implement DataCache_InitCache

[Huw Davies]

On Tue, May 02, 2017 at 06:11:22PM +0800, Wei Xie wrote:
> diff --git a/dlls/ole32/datacache.c b/dlls/ole32/datacache.c
> index 441a874..51a67e2 100644
> --- a/dlls/ole32/datacache.c
> +++ b/dlls/ole32/datacache.c
> @@ -2052,8 +2052,45 @@ static HRESULT WINAPI DataCache_InitCache(
>  	    IOleCache2*     iface,
>  	    IDataObject*    pDataObject)
>  {
> -  FIXME("stub\n");
> -  return E_NOTIMPL;
> +    HRESULT hr;
> +    FORMATETC fmt;
> +    STGMEDIUM med;
> +
> +    FIXME("semi-stub\n");
> +
> +    hr = IDataObject_GetData(pDataObject, &fmt, &med);
> +    if (FAILED(hr))
> +    {
> +        return CACHE_E_NOCACHE_UPDATED;
> +    }
> +
> +    if (!fmt.cfFormat || !fmt.tymed ||
> +        (check_valid_clipformat_and_tymed(fmt.cfFormat, fmt.tymed, FALSE)
> +        && TYMED_NULL != med.tymed))
> +    {
> +        switch(med.tymed)
> +        {
> +            case TYMED_GDI:
> +            {
> +                fmt.cfFormat = CF_BITMAP;
> +                fmt.ptd = NULL;
> +                fmt.dwAspect = DVASPECT_CONTENT;
> +                fmt.lindex = -1;
> +                fmt.tymed = TYMED_GDI;
> +            }
> +            break;
> +            default:
> +                FIXME("Fill formatetc\n");
> +        }
> +    }
> +
> +    hr = IOleCache2_SetData(iface, &fmt, &med, FALSE);
> +    if (FAILED(hr))
> +    {
> +        return CACHE_E_NOCACHE_UPDATED;
> +    }
> +
> +    return hr;
>  }

This isn't correct.  What I think the tests will show you is that it
looks something like the pseudo-code:

    for_each_cached_format( &fmt ) /* some function that returns the fmt of each cache entry */
    {
        IDataObject_GetData(pDataObject, &fmt, &med);
        IOleCache2_SetData(iface, &fmt, &med);                        
    }

Of course there needs to be error handling, tests if the cache has already been
initialized, etc.

However for now I suggest you just concerntrate on getting the tests
in, and come back to this and the subsequent patches later on.

Huw.