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Andy O'Meara · Guest

I'm trying to add cover art support into visual plugin that I author for WMP
10. So far I've got the IWMPMedia3 object, but when I call
getItemInfoByType() and try to use the VARIANT I get back as a
IWMPMetadataPicture*, I crash:

BSTR coverArtURL = NULL;
IWMPMetadataPicture* albumArt = NULL;

HRESULT result = Media3 -> getItemInfobyType( L"WM/Picture", NULL, 0,
(VARIANT*) &albumArt ); // the value of albumArt is junk
if ( albumArt && result == S_OK ) {
result = albumArt -> get_URL( &coverArtURL ); // crash
}

It's possible I'm doing something totally dumb? -- my primary platform is
Mac OS. If you see what I have wrong or if there's some sample code
out there that retrieves album cover art for the current track, then I'd love to
get a hold of it.

Thanks,
Andy

Jim Travis [ms] · Guest

Andy, as we discussed, a VARIANT is a struct union, so you have to
dereference it. The pdispVal member has an IDispatch pointer that you can QI
for IWMPMetadataPicture.

Hope that helps someone else as well.

--
Jim Travis
Microsoft Corp.
Windows Media Player SDK

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"Andy O'Meara" <andy55@ureach.com> wrote in message
news:614e01c492c5$227608f0$a501280a@phx.gbl...
I'm trying to add cover art support into visual plugin that I author for WMP
10. So far I've got the IWMPMedia3 object, but when I call
getItemInfoByType() and try to use the VARIANT I get back as a
IWMPMetadataPicture*, I crash:

BSTR coverArtURL = NULL;
IWMPMetadataPicture* albumArt = NULL;

HRESULT result = Media3 -> getItemInfobyType( L"WM/Picture", NULL, 0,
(VARIANT*) &albumArt ); // the value of albumArt is junk
if ( albumArt && result == S_OK ) {
result = albumArt -> get_URL( &coverArtURL ); // crash
}

It's possible I'm doing something totally dumb? -- my primary platform is
Mac OS. If you see what I have wrong or if there's some sample code
out there that retrieves album cover art for the current track, then I'd
love to
get a hold of it.

Thanks,
Andy

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