public static bool TryGetMetadataByName(this IWICMetadataQueryReader meta, string name, out PropVariant val)
{
val = null;
int hr = ProxyFunctions.GetMetadataByName(meta, name, IntPtr.Zero);
if (hr >= 0)
{
val = new PropVariant();
meta.GetMetadataByName(name, val);
}
return(hr >= 0);
}
public static bool TryGetMetadataByName(this IWICMetadataQueryReader meta, string name, [NotNullWhen(true)] out PropVariant?value)
{
value = null;
int hr = ProxyFunctions.GetMetadataByName(meta, name, IntPtr.Zero);
if (hr >= 0)
{
value = new PropVariant();
var pvMarshal = PropVariant.Marshaler.GetInstance(null);
var pvNative = pvMarshal.MarshalManagedToNative(value);
hr = ProxyFunctions.GetMetadataByName(meta, name, pvNative);
pvMarshal.MarshalNativeToManaged(pvNative);
pvMarshal.CleanUpNativeData(pvNative);
}
return(hr >= 0);
}