这肯定是VS2012的bug了：
当在metro开发中使用如下lambda表达式获取本地媒体资源，而项目工程的manifest文件中的caps中并没有勾选music libs、Pictures libs以及Video libs等几个复选框时，VS光荣的，挂掉了。必现，crash！
FileStruct* f =new FileStruct();
try
{
volatile int status = 0;
task<StorageFile^>(StorageFile::GetFileFromPathAsync(ShowbizUtil::ANSI_2_Unicode(szFileFullPath))).then([=] (StorageFile^ file)
{
f->file = file;
return file->OpenAsync(FileAccessMode::Read);
}).then([=, &status] (Streams::IRandomAccessStream^ fileStream)//Streams::IRandomAccessStream^ stream)
{
status = 1;
try
{
f->stream = fileStream;
if(f->stream)
{
f->size = f->stream->Size;
}
}
catch (Exception^ e)
{
return;
}
}).wait();