WXFREECHART PIEPLOT EXAMPLE

#include <wx/wx.h>
#include <wx/pie/pieplot.h>
#include <wx/category/categorysimpledataset.h>
#include <wx/chartpanel.h>

class wxUI: public wxFrame
{
public:
   wxUI(const wxString& title, const wxPoint& pos, const wxSize& size) :
       wxFrame(NULL, -1, title, pos, size)
       {
           wxBoxSizer* hbox = new wxBoxSizer(wxVERTICAL);
           SetSizer(hbox);

           // Pieplot data
           double data[] = {1.0, 2.0, 3.0} ;
           wxString categories[] = {_("cat 1"), _("cat 2"), _("cat 3")};
           wxColour colours[] = {wxColour(0x99, 0xCC, 0xFF), wxColour(0xFF,
0xFF, 0x99), wxColour(0x3D, 0xEB, 0x3D)} ;

           ColorScheme* colorScheme = new ColorScheme(colours, WXSIZEOF(colours));

           // first step: create plot
           PiePlot *plot = new PiePlot();

           // create dataset
           CategorySimpleDataset* dataset = new
CategorySimpleDataset(categories, WXSIZEOF(categories));

           // and add serie to it
           dataset->AddSerie(_("Serie 1"), data, WXSIZEOF(data));

           // set color scheme
           plot->SetColorScheme(colorScheme);

           plot->SetDataset(dataset);

           // and finally create chart
           wxChartPanel* chart = new wxChartPanel(this);
           chart->SetChart(new Chart(plot, _("Pieplot title")));

           chart->SetSize(wxSize(200, 200)) ;

           hbox->Add(chart, 0);

       }

};

class MyApp: public wxApp
{
   virtual bool OnInit()
       {
           wxUI* ui = new wxUI(_("wxWidgets Pieplot example"), wxPoint(50,
50), wxSize(200, 200));
           ui->Show();
           ui->Centre();

           return true;
       }
};

IMPLEMENT_APP(MyApp);