This is the third in a series of videos about how to build an RGB colour mixer using Visual Basic.NET. This series covers the use of the VB.NET graphics object, along with a range of related objects and their methods for drawing and filling shapes on a Windows Form. This particular video includes step by step instructions on how to write VB.NET code to define a point using X and Y co-ordinates. Points can be used when drawing using lines and basic shapes such as rectangles. Points can also be used when drawing special shapes such as Bézier curves. You can even use an array of point objects to draw a more complex curve.