Hi,

Don't know if I can explain this well enough but:

I have a sub-classed Canvas where I want to track FontFamily and FontWeight so I've added DependencyProperties using AddOwner():

private static readonly DependencyProperty FontFamilyProperty;
private static readonly DependencyProperty FontWeightProperty;
static LLCanvas
{
     FontFamilyProperty = TextElement.FontFamilyProperty.AddOwner(typeof(LLCanvas));
     FontWeightProperty = TextElement.FontWeightProperty.AddOwner(typeof(LLCanvas));
}

For testing I nest a couple of these inside a third instance.
If I set the TextWeight on one of these instances it works impecably - drag in, say, a TextBlock and it picks up the setting, drag it out and it reverts to the setting for the outer container.
But if I set the TextFamily property I get odd results. If I drag in a TextBlock then it picks up the font as expected - but from that point the BaseValueSource for his property is no longer 'Inherited' but 'Local' so when I drag it back out the FontFamily is fixed.

I've read that AddOwner() doesn't inherit Metadata from the 'source' DependencyProperty so I also tried this adding new Metadata with Inherits=true but this made no difference.

IAC, why would this work with FontWeightProperty but not with FontFamilyProperty?
TIA,
Viv