I am very new to NI products, and recently start using it for my
company vision system, I am using a Visual C# 2005 with Vision
development module 8.5. Founded that everytime i
do something like:
CWIMAQControlsLib.CWIMAQEdgeCoordinatesReportClass reports = new CWIMAQControlsLib.CWIMAQEdgeCoordinatesReportClass();
CWIMAQControlsLib.CWIMAQEdgeOptions eo = new CWIMAQControlsLib.CWIMAQEdgeOptions();
CWIMAQControlsLib.CWIMAQLines lines = new CWIMAQControlsLib.CWIMAQLines();
eo.SubPixelAccuracy = CWIMAQControlsLib.CWIMAQSubPixelAccuracyValues.cwimaqSubPixelOneTenth;
axCWIMAQVision1.Rake(m_imgCam2, axCWIMAQViewer2.Regions,
CWIMAQControlsLib.CWIMAQRakeScanDirections.cwimaqScanLeftToRight, reports, eo,
CWIMAQControlsLib.CWIMAQEdgeProcesses.cwimaqEdgeProcessFirst, 4, (object)lines);
CWIMAQControlsLib.CWIMAQPoint pt = new CWIMAQControlsLib.CWIMAQPoint();
pt.Initialize(reports.FirstEdgePoints.Item(i).X, reports.FirstEdgePoints.Item(i).Y);
It will always exit whenever i make a reference to reports.FirstEdgePoints.Item(i),
it will always exit by itself without any error being show out, this
happend to almost every collection type, except the overlays. The reports are comfirmed to be valid because the count property is non-zero everytime, and I can use a Overlays.Item(1).DrawConnectedPoints() to draw out the founded edge points. Am I missing something here?