Chapter 6-Lesson 2

• Image is an abstract class.
• Image class uses static methods to create objects to/from image files.
• Bitmap class inherits from Image class and is used for still images.
• MetaFile class also inherits from Image class and is used for Animated images.
• Graphics class is still more complex than Bitmap class. We can always use Graphics.FromImage( ) method to represent a Bitmap as a Graphics object and use Graphics methods over it.
• To save images to a file, use Bitmap.Save( ) method.
• ImageFormat enum specifies supported image formats (BMP, GIF, JPEG, TIFF, etc) for saving images.
• SystemIcons class exposes standard windows icons (of size 40 x 40) as properties.

Chapter 6-Lesson 1

• Brush is an abstract class. Brushes is a sealed class.
• ColorConverter and ColorTranslator are used to convert colour value from one format to another.
• Graphics is a sealed class.
• Pen (and related) classes are used to draw shapes and Brush (and related classes) are used to fill regions with colours.
• All classes suffixed with Converter are accessed through TypeDescriptor.
• Color, Rectangle, Point and Size are structures and not classes.
• Color names in Color structure are actually properties inside the structure.
• DrawString( ) method of the Graphics class may be used to draw a string using a specified Brush and Font objects.
• By default Pen class draws solid lines
• Usually System.Drawing.Drawing2D namespace is required for Graphics programming.
• LineCap enumeration defines possible values to set edges of a line.
• Draw methods usuallu require a Pen type object and Fill methods usually require a Brush type object.
• Brush is an abstract class. Use one the childrens instead.