vc TeeChart 数据实时更新

w20011025 2010-06-26 02:49:41



	char second[32] ="";

	char one[7]="";

	struct tm *temptm;

	time_t temptime;

	temptime= time(0);

	temptm = localtime(&temptime);



	sprintf(second,"%02d:%02d:%02d",temptm->tm_hour,temptm->tm_min,temptm->tm_sec);

        while(m_Chart1.Series(0).GetCount()>50)		m_Chart1.Series(0).Delete(0);

	if(m_Chart1.Series(0).GetCount()>50) m_Chart1.Series(0).Delete(0);	

	

	newX=m_Chart1.Series(0).GetXValues().GetCount()+1;//

	newY=GetRandom(100,300);

	m_Chart1.Series(0).AddXY(newX,newY,second,RGB(255,255,0));

1。页面最多显示100个点温度曲线
2。根据时间测试一个点的温度数据实时更新（超过100个点的时候删除前面的点）
3。后面的温度曲线每秒向前移动一个温度曲线。

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切换为时间正序

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w20011025 2010-06-26

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m_Chart1.GetAxis().GetBottom().SetAutomatic(TRUE);
已经改好。

w20011025 2010-06-26

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char second[32] ="";

char one[7]="";

struct tm *temptm;

time_t temptime;

temptime= time(0);

temptm = localtime(&temptime);

sprintf(second,"%02d:%02d:%02d",temptm->tm_hour,temptm->tm_min,temptm->tm_sec);

sprintf(one,"%02d%02d%02d",temptm->tm_hour,temptm->tm_min,temptm->tm_sec);

 while(m_Chart1.Series(0).GetCount()>50)m_Chart1.Series(0).Delete(0);

if(m_Chart1.Series(0).GetCount()>50) 

{

m_Chart1.Series(0).Delete(0);

m_Chart1.GetAxis().GetBottom().SetAutomatic(TRUE);

}		

if(m_Chart1.Series(0).GetXValues().GetCount()<1)

{

newX=m_Chart1.Series(0).GetXValues().GetCount()+1;//

}	

else newX=m_Chart1.Series(0).GetXValues().GetLast()+1;

	newY=GetRandom(100,300);

	m_Chart1.Series(0).AddXY(newX,newY,second,RGB(255,255,0));