我试图将一个简单的.mp3文件添加到iTunes库,但当我调用AddFile()时,程序不断崩溃。但是,当我调用get_Tracks()时,它返回一个有效的指针,所以我认为指向IITLibraryPlaylist的指针是有效的。我究竟做错了什么?iTunes COM接口 - 无法将歌曲添加到库
IiTunes* p_iTunes;
IITLibraryPlaylist* p_Library;
IITOperationStatus* status;
IITTrackCollection* iTrackCollection;
CoInitialize(0);
if (FAILED(CoCreateInstance(CLSID_iTunesApp, NULL, CLSCTX_LOCAL_SERVER, IID_IiTunes, (PVOID *)&p_iTunes))){
p_iTunes->Release();
CoUninitialize();
}
else{
p_iTunes->get_LibraryPlaylist(&p_Library);
p_Library->get_Tracks(&iTrackCollection); // This works, so I suppose p_Library is valid..
long trackCount = 0;
iTrackCollection->get_Count(&trackCount);
p_Library->AddFile(L"C:\\asd\asd.mp3",&status); // crashes here
}
顺便说一句,你有错误处理做错了。如果'CoCreateInstance()'失败'p_iTunes'将会为空,因此调用'Release()'会导致程序崩溃。 – sharptooth 2011-05-16 12:51:10