' Centers the form onscreen.
' If WidthPerCent > 0 then value is the width of the form relative to the width of the screen.
' For example, 65 says make the form centered ont he screen with the width 65% of the
' screen regardless of the size and resolution of the screen.
' If WidthPerCent is < 0 then it is assumed that the negative of the value is the % multiplier
' of the original form size. For example, -200 says make the width 200% of the original form.
' HeightPerCent is the same as WidthPerCent except (obviously) it is for height, not width.
' Note that if KeepRatio is True then the height setting is ignored and it is set to whatever
' necessary to maintain the original height:width ratio.
' If Limit2Screen is True then the dimensinos might be adjusted to keep the form totally onscreen.