public WiaConfiguration Wia10NativeUi(string deviceId, IntPtr hwnd)
{
try
{
try
{
using (var deviceManager = new WiaDeviceManager(WiaVersion.Wia10))
using (var device = deviceManager.FindDevice(deviceId))
{
var item = device.PromptToConfigure(hwnd);
return(new WiaConfiguration
{
DeviceProps = device.Properties.SerializeEditable(),
ItemProps = item.Properties.SerializeEditable(),
ItemName = item.Name()
});
}
}
catch (WiaException e)
{
WiaScanErrors.ThrowDeviceError(e);
throw new InvalidOperationException();
}
}
catch (ScanDriverException e)
{
throw new FaultException <ScanDriverExceptionDetail>(new ScanDriverExceptionDetail(e));
}
}
protected override List <ScanDevice> GetDeviceListInternal()
{
using (var deviceManager = new WiaDeviceManager(ScanProfile.WiaVersion))
{
return(deviceManager.GetDeviceInfos().Select(deviceInfo =>
{
using (deviceInfo)
{
return new ScanDevice(deviceInfo.Id(), deviceInfo.Name());
}
}).ToList());
}
}
private void DoWia20NativeTransfer(ScannedImageSource.Concrete source, WiaDeviceManager deviceManager, WiaDevice device)
{
// WIA 2.0 doesn't support normal transfers with native UI.
// Instead we need to have it write the scans to a set of files and load those.
if (DialogParent == null)
{
DialogParent = new BackgroundForm();
}
var hwnd = Invoker.Current.InvokeGet(() => DialogParent.Handle);
var paths = deviceManager.PromptForImage(hwnd, device);
if (paths == null)
{
return;
}
int pageNumber = 1;
InitProgress(device);
try
{
foreach (var path in paths)
{
using (var stream = new FileStream(path, FileMode.Open))
using (var output = Image.FromStream(stream))
{
int frameCount = output.GetFrameCount(FrameDimension.Page);
for (int i = 0; i < frameCount; i++)
{
output.SelectActiveFrame(FrameDimension.Page, i);
ProduceImage(source, output, ref pageNumber);
}
}
}
}
finally
{
foreach (var path in paths)
{
try
{
File.Delete(path);
}
catch (Exception e)
{
Log.ErrorException("Error deleting WIA 2.0 native transferred file", e);
}
}
}
}
private void Scan(ScannedImageSource.Concrete source)
{
using (var deviceManager = new WiaDeviceManager(ScanProfile.WiaVersion))
using (var device = deviceManager.FindDevice(ScanProfile.Device.ID))
{
if (device.Version == WiaVersion.Wia20 && ScanProfile.UseNativeUI)
{
DoWia20NativeTransfer(source, deviceManager, device);
return;
}
using (var item = GetItem(device))
{
if (item == null)
{
return;
}
DoTransfer(source, device, item);
}
}
}
protected override ScanDevice PromptForDeviceInternal()
{
try
{
using (var deviceManager = new WiaDeviceManager(ScanProfile.WiaVersion))
{
using (var device = deviceManager.PromptForDevice(DialogParent?.Handle ?? IntPtr.Zero))
{
if (device == null)
{
return(null);
}
return(new ScanDevice(device.Id(), device.Name()));
}
}
}
catch (WiaException e) when(e.ErrorCode == WiaErrorCodes.NO_DEVICE_AVAILABLE)
{
throw new NoDevicesFoundException();
}
}