I have a frame in a mod I'm working on. It's set to parent="UIParent"
and has the size set to relative with x="1" and y="1". When I query
GetWidth() and GetHeight() on my frame, it returns 1280 plus a small
fraction for both. Doing the same for UIParent I get the expected
1024 x 768 which is what my current resolution is set to.
Is there a simple way to make sure my frame matches the size and position
of it's parent (in this case UIParent, or possibly WorldFrame)?
This will stretch the frame to cover the whole screen even if it resizes. I commonly use this to stretch a background texture in a frame. Once anchored to both corners there's no need to go back to it if I change the size of the window.