Forums | NoesisGUI

Posted: **23 Jul 2021, 23:33**

Hi, I'm trying to register a property of type Noesis::TreeViewItem* in my TreeView-derived custom control, but I can't for the life of me figure out why this doesn't work:

data->RegisterProperty<TreeViewItem*>(SelectedItemsStartProperty, "SelectedItemsStart", FrameworkPropertyMetadata::Create<TreeViewItem*>(nullptr));

It builds, but I get the runtime error left of '.GetHashCode' must have class/struct/union.
The examples in the documentation are only for floats, and in general, it'd be nice to see better examples beyond the most basic use case.

I'm running Noesis 2.2 C++ SDK, if that's any help.

Posted: **24 Jul 2021, 01:33**

For ref counted objects (inheriting from BaseComponent) we are storing the dependency property using a Ptr and the definition should look like this:

data->RegisterProperty<Ptr<TreeViewItem>>(SelectedItemsStartProperty, "SelectedItemsStart",
    FrameworkPropertyMetadata::Create<Ptr<TreeViewItem>>(nullptr));

Posted: **24 Jul 2021, 03:01**

Thank you so much!
I swear I tried it before but I must've gotten something wrong. :)

Forums | NoesisGUI

How to register attached property of complex type?

How to register attached property of complex type?

Re: How to register attached property of complex type?

Re: How to register attached property of complex type?