我用PCI9118DG的卡,采样频率100KHz,doublebuffer设为10000,用DAQbench的chart控件进行实时图形显示,采集卡的控制用了NuDAQ-PCI9118控件,例程套用的9112的程序,光显示没有问题,但在边显示边存储时出现了掉点,图形发生闪烁.减小采样频率调试也无效,请各位老师指教. //开始采样 void CDemo2Dlg::OnStart() { // TODO: Add your control notification handler code here VARIANT Filename; if(m_to_file==0) { VariantClear(&Filename); } else { Filename.vt=VT_BSTR; Filename.bstrVal=m_Filename.AllocSysString(); } m_Chart.ClearPlots(); m_pci9118.StartContAI(Filename); } //buffer半满则显示图象 void CDemo2Dlg::OnAiHalfReadyPci9118ctrl1(VARIANT FAR* ScaledData, VARIANT FAR* BinaryCodes) { // TODO: Add your control notification handler code here m_Chart.PlotCharts(ScaledData, 1, BoolToVar(false)); } 先怀疑是缓冲小了,中断过于频繁,加大缓冲,也没有用.怎么半?