Implement OnDesignerChanged to work for Components

Hello

// TODO vinz: Implement OnDesignerChanged to work for Components. This currently is just a virtual function for UWidgets.
//#if WITH_EDITOR
//      TOptional<FVector2D> DesignerSize;
//#endif

for my use case I would need to be able to use DesignerSize in my UIComponent.

Would it be possible to implement it, like this comment seem to point too ?

Thank you,

- Alban

Steps to Reproduce

Hi,

It shouldn’t be too heavy of a lift to hook that placeholder up, I’ll see if I can get that checked in and share a CL once it’s available. Note that the change will be made in the UE6 branch, but you could cherrypick it back to stay in sync.

Best,

Cody

Hi,

Closing the loop here, sorry for the delay but this should now be checked in at CL# 58161889. Let me know if you run into any issues!

Best,

Cody

Thank you !