?
Solved

VB.Net Graphics Question DrawPie

Posted on 2009-07-09
2
Medium Priority
?
329 Views
Last Modified: 2013-11-07
Hi using the graphics objects I managed to a draw a pie segment on the screen.

I'm now stuck because when I hover over the pie segment I need to display some text. Any ideas?

I have tried many things, I even tried to get the pixel color at a mouse point so that I could compare that colour with the colour I painted the segment with. But at the moment I battling to even get the colour from a pixel.
0
Comment
Question by:dfincham28
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
2 Comments
 
LVL 86

Accepted Solution

by:
Mike Tomlinson earned 2000 total points
ID: 24820955
Build a GraphicsPath() instance for each slice of the pie and build it up using the coordinates and associated drawing methods.  Then when the mouse moves over the pie you iterate over the GraphicsPath (store them in a List) and see if one contains the current position with the IsVisible() method.  If a match is found then display your tooltip or message in some control.

See: http://msdn.microsoft.com/en-us/library/system.drawing.drawing2d.graphicspath.aspx
0
 

Author Closing Comment

by:dfincham28
ID: 31601962
This was very helpful thank you idle mind
0

Featured Post

Free Backup Tool for VMware and Hyper-V

Restore full virtual machine or individual guest files from 19 common file systems directly from the backup file. Schedule VM backups with PowerShell scripts. Set desired time, lean back and let the script to notify you via email upon completion.  

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

It’s quite interesting for me as I worked with Excel using vb.net for some time. Here are some topics which I know want to share with others whom this might help. First of all if you are working with Excel then you need to Download the Following …
More often than not, we developers are confronted with a need: a need to make some kind of magic happen via code. Whether it is for a client, for the boss, or for our own personal projects, the need must be satisfied. Most of the time, the Framework…
Monitoring a network: how to monitor network services and why? Michael Kulchisky, MCSE, MCSA, MCP, VTSP, VSP, CCSP outlines the philosophy behind service monitoring and why a handshake validation is critical in network monitoring. Software utilized …
Have you created a query with information for a calendar? ... and then, abra-cadabra, the calendar is done?! I am going to show you how to make that happen. Visualize your data!  ... really see it To use the code to create a calendar from a q…
Suggested Courses

764 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question