/// <summary>
///
/// </summary>
public object GetQuery(String query)
{
int hr;
if (query == null)
{
throw new System.ArgumentNullException("query");
}
EnsureBitmapMetadata();
PROPVARIANT propVar = new PROPVARIANT();
try
{
propVar.Init(null);
lock (_syncObject)
{
hr = UnsafeNativeMethods.WICMetadataQueryReader.GetMetadataByName(
_metadataHandle,
query,
ref propVar
);
}
if (hr != (int)WinCodecErrors.WINCODEC_ERR_PROPERTYNOTFOUND)
{
HRESULT.Check(hr);
object objValue = propVar.ToObject(_syncObject);
if (IsFrozenInternal)
{
BitmapMetadata metadata = objValue as BitmapMetadata;
if (metadata != null)
{
metadata.Freeze();
}
}
return(objValue);
}
}
finally
{
propVar.Clear();
}
return(null);
}
