Data Structures and Algorithms

73.利用程式畫圖表 (TeeChart)

1. Choose TeeChart in ToolBox and put it onto Form1

2. Double-click Chart1 to open the Chart1 dialog, then click Add

3. Choose Bar, for instance, as Series1

4. Repeat step 3 to create 3 series (two Bar and one Line)

5. Close the Chart1 dialog (some default chart would be seen)

6. Click Button1 to obtain the Chart we need

//---------------------------------------------------------------------------#include <vcl.h>#pragma hdrstop#include "SimpleChart.h"//---------------------------------------------------------------------------#pragma package(smart_init)#pragma link "Chart"#pragma link "TeEngine"#pragma link "TeeProcs"#pragma link "Series"#pragma resource "*.dfm"TForm1 *Form1;//---------------------------------------------------------------------------__fastcall TForm1::TForm1(TComponent* Owner)  : TForm(Owner){}double SelSortTime [10];double BubSortTime [10];double RandGenTime [10];//---------------------------------------------------------------------------void __fastcall TForm1::Button1Click(TObject *Sender){ int i;    Chart1->RemoveAllSeries(); // Remove all previous series    Chart1->Title->Text->Clear(); // Clear chart chart title    Chart1->Title->Text->Add("A sample chart");    Chart1->BottomAxis->Title->Caption = "data size"; // x-axis' title    Chart1->LeftAxis->Title->Caption = "CPU time (sec.)"; // y-axis' title            for (int i=0; i<5; i++) // acquire CPU time information for the three serieses    { SelSortTime[i] = 10*(i+1)+rand()%10;           BubSortTime[i] = 12*(i+1)+rand()%12;           RandGenTime[i] = 2*(i+1)+rand()%2;    }    Chart1->AddSeries( new TBarSeries (this) ); // create a new BAR series    Chart1->Series[0]->Title = "Selection Sort";    Chart1->Series[0]->AddArray( SelSortTime, 4 );                // assign the values in SelSortTime onto the series one by one from 0 to 4    Chart1->AddSeries( new TBarSeries (this) );    Chart1->Series[1]->Title = "Bubble Sort";    for (i=0; i<5; i++) Chart1->Series[1]->Add( BubSortTime[i], 10000*(i+1), clGreen );             // assign the values in BubSortTime onto the series one by one from 0 to 4     Chart1->AddSeries( new TLineSeries (this) ); // create a new LINE series     Chart1->Series[2]->Title = "Data generation";     Chart1->Series[2]->AddArray( RandGenTime, 4 );
      for (int i=0; i<3; i++)     { Chart1->Series[i]->Marks->Visible = true;            Chart1->Series[i]->Marks->Style = smsValue;      }      /*     // new series one by one    TLineSeries * Series = new TLineSeries(Chart1);    Chart1->AddSeries(Series);
    TBarSeries * Series2 = new TBarSeries(Chart1);    Chart1->AddSeries(Series2);    // new series by loop    for (i=1; i<=3; i++)    { TLineSeries * Series = new TLineSeries(Chart1);         Series->ParentChart = Chart1;         Chart1->AddSeries(Series);     }     */}//---------------------------------------------------------------------------

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