I know it is possible to re-size some front panel Objects...As for ALL i don't know that. For Example, you can re-size a Tab Control object with 'Tab Control Pane Dimension'...Buttons have 'Button Size'. Unfortunately they are all object specific properties so if you are trying to do all types you will have to deal with a whole bunch of individual cases.
If in Doubt, create a property node and drag it down to show all possible properties and then do a change all to write. Then look for any property name that looks reasonable with an input instead of an output connector.
