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[FlagsAttribute()]public enum WiaAcquireFlags
| Value | Member | Description |
|---|---|---|
| 0x00000000 | None | Default behavior for the device image acquisition dialog box. |
| 0x00000001 | NoDefault | WIA_SELECT_DEVICE_NODEFAULT |
| 0x00000002 | SingleImage | WIA_DEVICE_DIALOG_SINGLE_IMAGE |
| 0x00000003 | ShowUserInterface | If this flag is set then the image acquisition user interface dialog will be shown when call any of the available acquire functions, otherwise the user interface dialog will not be shown. |
| 0x00000004 | UseCommonUI | WIA_DEVICE_DIALOG_USE_COMMON_UI |
using Leadtools;using Leadtools.Codecs;using Leadtools.Wia;public void IsAvailableExample(IntPtr parent){if (!WiaSession.IsAvailable(WiaVersion.Version1)){Console.WriteLine("WIA version 1.0 not installed.");return;}WiaSession 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;}// Initialize and fill the required fields from the WiaAcquireOptions structureWiaAcquireOptions wiaAcquireOptions = WiaAcquireOptions.Empty;wiaAcquireOptions.MemoryBufferSize = 32 * 1024;wiaAcquireOptions.DoubleBuffer = true;wiaSession.AcquireOptions = wiaAcquireOptions;wiaSession.AcquireEvent += new EventHandler<WiaAcquireEventArgs>(wiaSession_AcquireEvent);wiaSession.Acquire(parent, null, WiaAcquireFlags.ShowUserInterface | WiaAcquireFlags.UseCommonUI);wiaSession.AcquireEvent -= new EventHandler<WiaAcquireEventArgs>(wiaSession_AcquireEvent);wiaSession.Shutdown();}public void wiaSession_AcquireEvent(object sender, WiaAcquireEventArgs e){Application.DoEvents();if ((e.Flags & WiaAcquiredPageFlags.StartOfPage) == WiaAcquiredPageFlags.StartOfPage)Console.WriteLine("Beginning of data transfer.");else if ((e.Flags & WiaAcquiredPageFlags.EndOfPage) == WiaAcquiredPageFlags.EndOfPage)Console.WriteLine("End of data transfer.");if (e.Image != null){// You can load the image here.}e.Cancel = false;}