Querying media library

[Ghantu]

I'm working on my plugin again, and seem to be failing to understand the IPC interface to query the media library. Based on what I read in ml.h I was thinking I could do something along these lines:

code:
	wsprintf( queryString, L"(artist == \"%s\")", artistName );

	trackQuery.query = queryString;	

	trackQuery.max_results = 0; // 0 for unlimited

	SendMessage( Plugin.hwndWinampParent, WM_ML_IPC, (WPARAM)(&trackQuery), ML_IPC_DB_RUNQUERYW );

	wsprintf( queryMsg, L"Query string '%s' got %d matches.", queryString, trackQuery.results.Size );

But it seems like no matter what I put for artistName, I end up with zero matches. Am I missing something fundamental here? I've read through Media Library Plugin and Media Library API on the wiki and I felt like I understood them. My plugin's working; I can attach to process in Visual Studio and step through, etc. Just Size == 0 on my queries.

[thinktink]

I thought you had to SendMessage to the ML Window, not the main Winamp window?

[Benski]

Send the message to

code:
Plugin.hwndLibraryParent

instead