I really like this feature, since it means apps can always fill the screen, as long as you are careful about calculated values for X/Y/H/W. All the common controls behave nicely in this configuration, but RTE is an exception.
I want to make sure I'm understanding you correctly. Are you trying to make a responsive app where the RTE and controls resize as the window resizes? If so, I can help to guide you. If I'm misunderstanding you, can you provide a sketch or screenshot of what you want to happen?
See below for example:
@Mr-Dang-MSFTYes that's it exactly. Layout of controls on the screen is dynamic, so screen looks good (within reason) regardless of window size and aspect ratio.
I can set position and size of all regular controls to variables that depend on current screen width and height, EXCEPT for Rich Text Control.
@JonathanGibbs , can you share an app that has the kinds of formulas you're using? I want to see how you're referencing the variable.
Attached is the test app I made that includes how I set up the app to be responsive.
I'd walk through more, but the docs for making a responsive app are very thorough already:
Please see sections on settings including switching scale to fit off, lock aspect ratio off.
Thank you @Mr-Dang-MSFT I think that's solved the problem. Your test app had Scale to Fit Off, Lock aspect ratio Off, Lock Orientation On, whereas I have been using Scale to Fit On, Lock aspect ratio Off, Lock Orientation On. When using formulas for X/Y/H/W, controls other than Rich Text Editor appear to resize correctly whether Scale to Fit is On or Off; Rich Text Editor, however, MUST have Scale to Fit Off in order to resize correctly.
This is a huge relief!
thank you very much for your help.