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Drawing Functions

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Summary

In this chapter, we walked through the key classes related to drawing using managed code. The following is a summary of some of the key points related to executing common programming tasks with the .NET Framework Class Library:

  • GDI+ is the underlying technology used by the managed code to execute drawing tasks.

  • By default, a graphic's surface has its origin in the upper-left corner.

  • The Graphics class is used to execute nearly all drawing tasks. You use its methods like DrawLine, DrawEllipse, and FillRectangle to render shapes and colors to the drawing surface.

  • Classes derived from Brush can be used to fill the interior of shapes. Brush classes include SolidBrush, TextureBrush, and HatchBrush.

  • The GraphicsPath class is used to group shapes. This allows you to manipulate various shapes as a whole.

  • The Region class allows you to define areas of your drawing surface for clipping and hit testing.

  • The Bitmap class encapsulates an image. You can use the DrawImage method of the Graphics class to render it to the surface.

  • The Matrix class provides a number of ways to transform images and shapes.

  • The following methods of the Graphics class can be used to transform shapes: RotateTransform, ScaleTransform, MultiplyTransform.

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