I typically create app on Windows XP Pro.
They are run on Win XP Pro and Windows 7 Pro.

I use Arial Bold and Lucida Console Bold (due to vision problems).

On Win XP Pro all looks good.
On Windows 7 Pro many text displayed are wrapping on controls.

I use AutoSize for labels.

What causes this since the Font is the same on both Windows.

Is there a way to fix this ?
Is there some "magic" amount to make something wider while in Win XP Pro that will compensate for Windows 7 Pro?