Re: Pen problem (bug?) when using ScaleTransform.

From: Bob Powell [MVP] (bob_at__spamkiller_bobpowell.net)
Date: 07/16/04 

Date: Fri, 16 Jul 2004 17:18:11 +0200

Is the pen width really 1 pixel or 1 page unit?

If you want a 1pixel pen, not a 1/2 pixel pen you can use a pen-width of -1
or scale the pen to the inverse of the drawing scale. 

-- 
Bob Powell [MVP]
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"Peter Erikson" <PeterErikson@discussions.microsoft.com> wrote in message
news:CAEBA6EC-C172-4674-BA6B-7E88E5F75051@microsoft.com...
> Hi,
>
> I have a problem drawing lines (with the Pen object) on a derived Panel
when I scale the graphics object in OnPaint. It only happens when i scale
down (or zoom out).
>
> e.Graphics.ScaleTranstorm(0.5F, 0.5F); // for example
>
> The problem is that sometimes when a line is drawn on or very close to the
cliprectangles edge (but still within the cliprectangle) the line won´t show
up. This behaviour is somewhat iregular tho.
>
> If I for instance draw a an rectangle with an outline/border and the Pen
with is 1 pixel. And I invalidate a recttangle with its edge very close to
the rectangles edge the outline of the rectangle won´t show up. Even thoug
the rectangle is drawn.
>
> This only seems to happen with lines (graphic object drawn with Pen).
>
> Has someone else experienced this?
>
> /Peter

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