Ged Mead
Ged Mead (XTab) is a Microsoft Visual Basic MVP who has been working on computer software and design for more than 25 years. His journey has taken him through many different facets of IT. These include training as a Systems Analyst, working in a mainframe software development environment, creating financial management systems and a short time spent on military laptop systems in the days when it took two strong men to carry a 'mobile' system.
Based in an idyllic lochside location in the West of Scotland, he is currently involved in an ever-widening range of VB.NET, WPF and Silverlight development projects. Now working in a consultancy environment, his passion however still remains helping students and professional developers to take advantage of the ever increasing range of sophisticated tools available to them.
Ged is a regular contributor to forums on vbCity and authors articles for DevCity. He is a moderator on VBCity and the MSDN Tech Forums and spends a lot of time answering technical questions there and in several other VB forum sites. Senior Editor for DevCity.NET, vbCity Developer Community Leader and Admin, and DevCity.NET Newsletter Editor. He has written and continues to tutor a number of free online courses for VB.NET developers.
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In this article the original Pie Chart creation code moved closer to a real world scenario, one where the user inputs the data at run time.
The Invalidate method was introduced and we saw how this forces a repaint of the control on which it is called.
A HatchBrush was used to fill the pie segments with patterns selected from the HatchStyle enumeration.
In summary, this article included coverage of the following :
- ArrayList
- Brush
- ColorDialog
- Dispose
- DrawPie
- DrawRectangle
- DrawString
- FillPie
- FillRectangle
- Font object
- HatchBrush
- HatchStyle
- Invalidate
- Pen
- StartAngle
- Structure
- SweepAngle
- System.Enum.GetNames
- System.Enum.Parse
If you have read all three articles in this series so far, I hope you will now be feeling very comfortable with several of the key basic Graphics Class methods, properties and techniques. And I also hope that you will be looking forward to charting some new territory in Part 4 where we return to create a better bar chart.