WIA Automation for intent color scanner does not work

Question

I can not get the Canon Pixma MP150 to scan a color scan using C # code. The following code results in a black and white image, or if I change the value of 6146 to 2, then an image in grayscale is created. I would like to be able to scan colors from code. I know that the scanner makes color images, because I can do this through the xp wizard in “scanners and cameras”. Can someone help me figure out what value I am not setting for color scanning. All the documentation and examples that I can find just say to change the value of 6146.

Thanks for taking the time to read this!

private void ScanAndSaveOnePage () { WIA.CommonDialog Dialog1 = new WIA.CommonDialogClass(); WIA.DeviceManager DeviceManager1 = new WIA.DeviceManagerClass(); System.Object Object1 = null; System.Object Object2 = null; WIA.Device Scanner = null; Scanner = Dialog1.ShowSelectDevice(WIA.WiaDeviceType.ScannerDeviceType, false, false); WIA.Item Item1 = Scanner.Items[1]; setItem(Item1, "6146", 1); setItem(Item1, "6147", 150); setItem(Item1, "6148", 150); setItem(Item1, "6151", 150 * 8.5); setItem(Item1, "6152", 150 * 11); WIA.ImageFile Image1 = new WIA.ImageFile(); WIA.ImageProcess ImageProcess1 = new WIA.ImageProcess(); Object1 = (Object)"Convert"; ImageProcess1.Filters.Add(ImageProcess1.FilterInfos.get_Item(ref Object1).FilterID, 0); Object1 = (Object)"FormatID"; Object2 = (Object)WIA.FormatID.wiaFormatBMP; ImageProcess1.Filters[1].Properties.get_Item(ref Object1).set_Value(ref Object2); Object1 = null; Object2 = null; Image1 = (WIA.ImageFile)Item1.Transfer(WIA.FormatID.wiaFormatBMP); string DestImagePath = @"C:\test.bmp"; File.Delete(DestImagePath); Image1.SaveFile(DestImagePath); } private void setItem (IItem item, object property, object value) { WIA.Property aProperty = item.Properties.get_Item(ref property); aProperty.set_Value(ref value); } 

Answer 1

In case someone else asks a question, you also need to install "4104". The default value is 1 bit. It did the trick for me.

setItem(Item1, "4104", 24);

To find out, I had to list all the properties and see what they were installed on:

 foreach (Property propertyItem in item.Properties) { if (!propertyItem.IsReadOnly) { Console.WriteLine(String.Format("{0}\t{1}\t{2}", propertyItem.Name, propertyItem.PropertyID, propertyItem.get_Value())); } }