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)

SetStyle(STYLE_PIE)

And that’s all.

Downloads

Download demo project – 62 Kb

Download source – 17 Kb