Creating Charts and Pie Graphs using Data with Holes



Click here for larger image



Click here for larger image

Environment: VC 6, SP 4, Windows 2000

Introduction

In my work, I always want to display several data series with holes together. Massimo Colurcio has developed a control to display data with a hole, but it is not easy to use, especially when the data is very sparse, so I decided to develop my own control based on his work. At the same time, I also want to show this data series in a pie chart fashion.

How to Use the Application

Follow these steps to set up and use the Chart and Pie project:

  1. Add the files in the source package to your project.
  2. Do initilization. See CChartView::OnInitialUpdate().
  3. Call Add of CDataChart to add datasets to the control.

Use the following code as shown below:

void Add(int nDatasetID, int nIndex, double nData);

SetStyle(STYLE_LINE)
to display a line chart, or
SetStyle(STYLE_PIE)
to display a pie chart.

And that's all.

Downloads

Download demo project - 62 Kb
Download source - 17 Kb


Comments

  • Debug Assertion Failed

    Posted by Legacy on 01/20/2003 12:00am

    Originally posted by: Allen.WeiHao

    When you resize the chart view to a comparable small size, the program corrupt.

    Reply
  • Detected memory leaks!

    Posted by Legacy on 05/11/2002 12:00am

    Originally posted by: Chile

    Detected memory leaks!
    Dumping objects ->
    F:\MyProject\VC\ChartnPie\DataChart.cpp(1433) : {267} normal block at 0x00347CD0, 28 bytes long.
    Data: < > 02 00 00 00 02 00 00 00 02 00 00 00 01 00 00 00
    Object dump complete.

    Reply
Leave a Comment
  • Your email address will not be published. All fields are required.

Top White Papers and Webcasts

  • With JRebel, developers get to see their code changes immediately, fine-tune their code with incremental changes, debug, explore and deploy their code with ease (both locally and remotely), and ultimately spend more time coding instead of waiting for the dreaded application redeploy to finish. Every time a developer tests a code change it takes minutes to build and deploy the application. JRebel keeps the app server running at all times, so testing is instantaneous and interactive.

  • Live Event Date: May 6, 2014 @ 1:00 p.m. ET / 10:00 a.m. PT While you likely have very good reasons for remaining on WinXP after end of support -- an estimated 20-30% of worldwide devices still are -- the bottom line is your security risk is now significant. In the absence of security patches, attackers will certainly turn their attention to this new opportunity. Join Lumension Vice President Paul Zimski in this one-hour webcast to discuss risk and, more importantly, 5 pragmatic risk mitigation techniques …

Most Popular Programming Stories

More for Developers

Latest Developer Headlines

RSS Feeds