WiaScanningModeFlags Enumeration

Summary

Flags used within the WiaProperties structure.

Syntax

C++/CLI

Python

[FlagsAttribute()] 
public enum WiaScanningModeFlags

[FlagsAttribute()] 
public enum class WiaScanningModeFlags : public System.Enum, System.IComparable, System.IConvertible, System.IFormattable

class WiaScanningModeFlags(Enum): 
   None = 0 
   Feeder = 1 
   Flatbed = 2 
   Duplex = 4 
   FrontFirst = 8 
   BackFirst = 16 
   FrontOnly = 32 
   BackOnly = 64 
   NextPage = 128 
   Prefeed = 256 
   AutoAdvance = 512 
   AdvancedDuplex = 1024

Members

Value	Member	Description
0x00000000	None	Use this value only to determine whether the WiaProperties structure is filled with a valid scanning mode.
0x00000001	Feeder	Scan using the document feeder.
0x00000002	Flatbed	Scan using the flatbed.
0x00000004	Duplex	(0x00000400)Scan using duplexer operations.
0x00000008	FrontFirst	Scan the front of the document first. This value is valid when Duplex is set.
0x00000010	BackFirst	Scan the back of the document first. This value is valid when Duplex is set.
0x00000020	FrontOnly	Scan the front only. This value is valid when Duplex is set.
0x00000040	BackOnly	Scan the back only. This value is valid when Duplex is set.
0x00000080	NextPage	Scan the next page of the document.
0x00000100	Prefeed	Enable pre-feed mode. Pre-position next document while scanning.
0x00000200	AutoAdvance	Enables automatic feeding of the next document after a scan.
0x00000400	AdvancedDuplex	Scan using individual settings configured for each child feeder item. Duplex and AdvancedDuplex cannot both be set.

Example

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.Wia; 
 
 
WiaSession wiaSession; 
       
public void GetRootItemExample(IntPtr parent) 
{ 
   if (!WiaSession.IsAvailable(WiaVersion.Version1)) 
   { 
      Console.WriteLine("WIA version 1.0 not installed."); 
      return; 
   } 
   wiaSession = new WiaSession(); 
   wiaSession.Startup(WiaVersion.Version1); 
 
   DialogResult res = wiaSession.SelectDeviceDlg(parent, WiaDeviceType.Default, WiaSelectSourceFlags.NoDefault); 
   if (res != DialogResult.OK) 
   { 
      Console.WriteLine("Error selecting WIA device."); 
      wiaSession.Shutdown(); 
      return; 
   } 
 
   object rootItem = wiaSession.GetRootItem(null); 
   if (rootItem != null) 
   { 
      wiaSession.EnumItemsEvent += new EventHandler<WiaEnumItemsEventArgs>(wiaSession_EnumItemsEvent); 
 
      wiaSession.EnumChildItems(rootItem); 
 
      wiaSession.EnumItemsEvent -= new EventHandler<WiaEnumItemsEventArgs>(wiaSession_EnumItemsEvent); 
   } 
 
   wiaSession.Shutdown(); 
} 
 
void wiaSession_EnumItemsEvent(object sender, WiaEnumItemsEventArgs e) 
{ 
   if (e.Item != null) 
   { 
      WiaDataTransferProperties dataTransfer = WiaDataTransferProperties.Empty; 
      WiaImageEffectsProperties imageEffects = WiaImageEffectsProperties.Empty; 
 
      WiaProperties properties = wiaSession.GetProperties(e.Item); 
 
      dataTransfer.ImageDataType = WiaImageDataType.Grayscale; 
      imageEffects.Brightness = 250; 
 
      properties.DataTransfer = dataTransfer; 
      properties.ImageEffects = imageEffects; 
      properties.ScanningMode = WiaScanningModeFlags.Feeder;   // set scanning source to Feeder 
      properties.MaximumNumberOfPages = 0;                     // scan all pages in feeder 
      properties.ImageType = WiaImageType.Grayscale; 
      properties.Orientation = WiaOrientation.Portrait; 
 
      WiaImageResolutionProperties imageResolution = properties.ImageResolution; 
      imageResolution.BitsPerPixel = 8; 
      imageResolution.HorizontalResolution = 600; 
      imageResolution.VerticalResolution = 600; 
      properties.ImageResolution = imageResolution; 
 
      wiaSession.SetPropertiesEvent += new EventHandler<WiaSetPropertiesEventArgs>(wiaSession_SetPropertiesEvent); 
 
      wiaSession.SetProperties(e.Item, properties); 
 
      wiaSession.SetPropertiesEvent -= new EventHandler<WiaSetPropertiesEventArgs>(wiaSession_SetPropertiesEvent); 
 
      wiaSession.FreeItem(e.Item); 
   } 
} 
 
void wiaSession_SetPropertiesEvent(object sender, WiaSetPropertiesEventArgs e) 
{ 
   if (e.Error <= 0) 
   { 
      Console.WriteLine("Failed to set the below property:\n\tProperty Id: {0}\n\tProperty Value: {1}\n\tError: {2}\n\n", e.PropertyId.ToString(), e.Value.ToString(), e.Error.ToString()); 
   } 
}

Requirements

Target Platforms

Reference

Leadtools.Wia Namespace

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Help Version 22.0.2023.3.31

Leadtools.Wia Assembly

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