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When overriding an OnPaint or OnPaintBackground method in an inheritor of System.Windows.Forms.Control, one argument is always a System.Windows.Forms.PaintEventArgs object. The partial object structure: PaintEventArgs ClipRectangle (System.Drawing.Rectangle) Graphics (System.Drawing.Graphics) Clip (System.Drawing.Region) ClipBounds (System.Drawing.RectangleF) VisibleClipBounds (System.Drawing.RectangleF) Graphics.Clip appears to be a 1-bit map of applicable pixels to influence in subsequent paint operations. MSDN: "Gets or sets a Region that limits the drawing region of this Graphics." Graphics.ClipBounds is a read only rectangle that appears to be the minimum rectangle to fully contain the Clip region. MSDN: "Gets a RectangleF structure that bounds the clipping region of this Graphics." Graphics.VisibleClipBounds seems to be a more 'intelligent' clip, though I cannot understand how it operates. MSDN: "Gets the bounding rectangle of the visible clipping region of this Graphics." ClipRectangle appears to in all cases duplicate the Graphics.ClipBounds property. MSDN: "Gets the rectangle in which to paint." Can someone please answer the main question and potentially shed light on what all the various boundary objects are for? Edit: added MSDN's descriptions as per Dan-o's answer.

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