Introduction - If you have any usage issues, please Google them yourself
A control to draw a pie chart and an instance
The steps are as follows:
1. Use the MS Visual c ++ dialog editor to place the custom control into the dialog box and enter PIE_CHART_CTRL as the class name.
2. Add cpiechartctrl-class members to the header file
# include "PieChartCtrl. H"
...
CPieChartCtrl m_wndChart