Creating Charts and Pie Graphs using Data with Holes





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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

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