>>>>>On a form I take into account the the font, fontsize and field size to determine the .Width setting for controls. How do I do the same thing in the Report Designer?
>>>>
>>>>use Format/Font options of Report Designer menu.
>>>
>>>What about calculated and concatenated values that aren't created by drag and drop? Also, what about when I need to change the font size of different fields?
>>
>>To be honest, I don't create report fileds by drag and drop at all. If you need to change some filed font individually then you just select it individually and use Format/Font option.
>
>I'm probably not asking this right, so let me try another way. You place a field control on the report that will contain a value of type C10. The field control now takes up a certain amount of space on the report. Now you want to size the control big enough to allow for the maximum value and also small enough to prevent dead space on the report. How do I determine the size of the control?

Usually, by testing. I consider it as Q/A issue, i.e. it might be done after actual development is finished, and not necessarily by developer.