Real basic problem with distortion

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I'm using C# to experiment with graphics, something I've never worked with
before. I used the graphics DrawEllipse( ) method to draw a circle. For
example, g.DrawEllipse(myPen, 0,0,300,300 ). However, my "circle" comes out
stretched, measuring (for example) about 2" side-to-side and 2 1/4"
up-and-down. Experiments with other methods give similar results. I know
this is related to the screen resolution, because changing screen resolution
changes the amount of distortion.

There must be a way to correct for this stretching but I can't find it. Can
anyone enlighten me?

Much obliged.


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