Proportional Transformation

I have a form where user can add and position charts and co开发者_JS百科ntrols for a presentation like app. User can then change it to FullScreen mode, How do I change the size and position of controls to keep a relative position and size?

Store the control sizes / positions as percentages of form width, and use these percentages when the form is resized to programmatically size the controls - that's a simple enough solution that should work nicely.