C#

using (RasterCodecs codecs = new RasterCodecs())
{
   // Set Image Load Options
   codecs.Options.Load.XResolution = 300;
   codecs.Options.Load.YResolution = 300;
   codecs.Options.Load.AllPages = true;

   // Load Image
   RasterImage sourceFile = codecs.Load(fileName);
            
   // Add All Pages to Recognition Document
   _ocrDocument.Pages.AddPages(sourceFile, 1, -1, null);

   // Define Recognition Zone
   OcrZone ocrZone = new OcrZone();
   ocrZone.Bounds = new LeadRect(50, 50, 300, 100);
   ocrZone.ZoneType = OcrZoneType.Text;

   // Add Zone to Recognition Document
   _ocrDocument.Pages[0].Zones.Add(ocrZone);

   // Define Native Recognition Zone using the DotMatrix Recognition Module
   NativeOcrZone dotMatrx = new NativeOcrZone();
   dotMatrx.Bounds = ocrZone.Bounds;
   dotMatrx.ZoneType = NativeOcrZoneType.Text;
   dotMatrx.RecognitionModule = NativeOcrZoneRecognitionModule.DotMatrix;

   // Set Existing Previous Zone to Use the Native Recognition Zone
   _ocrEngine.ZoneManager.SetNativeZone(_ocrDocument.Pages[0], 0, dotMatrx);
}

Quote:

If there is some kind of error, then the main form will show a modal error MessageBox, which has the main form as its parent.