動作環境

C++ Builder XE4

処理概要

TeeChartのフォントサイズを変更する
- グラフタイトル
- 左軸ラベル
- 下軸ラベル

参考

axis title/labels not using Arial font

実装

Unit1.h

//---------------------------------------------------------------------------

# ifndef Unit1H
# define Unit1H
//---------------------------------------------------------------------------
# include <System.Classes.hpp>
# include <Vcl.Controls.hpp>
# include <Vcl.StdCtrls.hpp>
# include <Vcl.Forms.hpp>
# include <Vcl.ExtCtrls.hpp>
# include <VCLTee.Chart.hpp>
# include <VCLTee.Series.hpp>
# include <VCLTee.TeEngine.hpp>
# include <VCLTee.TeeProcs.hpp>
//---------------------------------------------------------------------------
class TForm1 : public TForm
{
__published:	// IDE で管理されるコンポーネント
	TChart *Chart1;
	TFastLineSeries *Series1;
	TButton *Button1;
	void __fastcall Button1Click(TObject *Sender);
private:	// ユーザー宣言
public:		// ユーザー宣言
	__fastcall TForm1(TComponent* Owner);
};
//---------------------------------------------------------------------------
extern PACKAGE TForm1 *Form1;
//---------------------------------------------------------------------------
# endif

Unit1.cpp

//---------------------------------------------------------------------------

# include <vcl.h>
# pragma hdrstop

# include <DateUtils.hpp>
# include "Unit1.h"
//---------------------------------------------------------------------------
# pragma package(smart_init)
# pragma resource "*.dfm"
TForm1 *Form1;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
	: TForm(Owner)
{
	// ダミーデータ作成

	Chart1->Series[0]->XValues->DateTime = true;
	Chart1->BottomAxis->DateTimeFormat = L"nn:ss";

	TDateTime dt;

	dt = Now();

	double yval;
	for (int idx=0; idx < 10; idx++) {
		yval = (1+ idx) % 2;
		Series1->AddXY(dt, yval, "", clRed);
		dt = IncSecond(dt, 1);
	}
}
//---------------------------------------------------------------------------
void __fastcall TForm1::Button1Click(TObject *Sender)
{
	// グラフタイトル
	Chart1->Title->Font->Size += 2;

	// 左軸
	Chart1->Axes->Left->LabelsFont->Size += 2;

	// 下軸 (時間軸)
	Chart1->Axes->Bottom->LabelsFont->Size += 2;
}
//---------------------------------------------------------------------------

動作例

起動直後

Button1を五回押下後