public List<Image> StartScan()
{
//return null;
wiaManager = new WiaClass();
wiaDevs = wiaManager.Devices as CollectionClass;
//if (string.IsNullOrEmpty(DefaultScaner))
//{
object selectUsingUI = System.Reflection.Missing.Value; // = Nothing
wiaRoot = (ItemClass)wiaManager.Create(ref selectUsingUI); // let user select device
if (wiaRoot != null)
{
string selectId = wiaRoot.GetPropById((WiaItemPropertyId)WiaDeviceInfoPropertyId.DeviceInfoDevId) as string;
XmlHelper.UpdateConfig("DefaultScan", selectId);
}
//}
else
{
foreach (object info in (wiaManager.Devices as CollectionClass))
{
//string selectId = wiaRoot.GetPropById((WiaItemPropertyId)WiaDeviceInfoPropertyId.DeviceInfoDevId) as string;
//if (selectId == DefaultScaner)
//{
// wiaRoot = (ItemClass)info.Create();
// break;
//}
}
}
try
{
//wiaManager = new WiaClass(); // create COM instance of WIA manager
//wiaDevs = wiaManager.Devices as CollectionClass; // call Wia.Devices to get all devices
// this call shows the common WIA dialog to let the user select a picture:
//wiaPics = wiaRoot.GetItemsFromUI(WiaFlag.SingleImage, WiaIntent.ImageTypeColor) as CollectionClass;
//if (wiaPics == null)
//{
// return null;
//}
//string imageFileName = string.Empty;
//bool takeFirst = true; // this sample uses only one single picture
//foreach (object wiaObj in wiaPics) // enumerate all the pictures the user selected
//{
//if (takeFirst)
//{
string imageFileName = string.Empty;
ItemClass wiaObj =(ItemClass) wiaRoot.TakePicture();
//wiaItem = (ItemClass)Marshal.CreateWrapperOfType(wiaObj, typeof(ItemClass));
imageFileName = Path.GetTempFileName(); // create temporary file for image
Cursor.Current = Cursors.WaitCursor; // could take some time
//this.Refresh();
//wiaRoot.TakePicture();
wiaObj.Transfer(imageFileName, false); // transfer picture to our temporary file
Image img = Image.FromFile(imageFileName); // create Image instance from file
//takeFirst = false; // first and only one done.
imgs.Add(img);
//}
// Marshal.ReleaseComObject(wiaObj); // release enumerated COM object
//}
}
catch (Exception ee)
{
//MessageBox.Show(this, "Acquire from WIA Imaging failed\r\n" + ee.Message, "WIA", MessageBoxButtons.OK, MessageBoxIcon.Stop);
//Application.Exit();
}
finally
{
if (wiaItem != null)
Marshal.ReleaseComObject(wiaItem); // release WIA image COM object
if (wiaPics != null)
Marshal.ReleaseComObject(wiaPics); // release WIA collection COM object
if (wiaRoot != null)
Marshal.ReleaseComObject(wiaRoot); // release WIA root device COM object
if (wiaDevs != null)
Marshal.ReleaseComObject(wiaDevs); // release WIA devices collection COM object
if (wiaManager != null)
Marshal.ReleaseComObject(wiaManager); // release WIA manager COM object
Cursor.Current = Cursors.Default; // restore cursor
}
return imgs;
// ImageFile imageFile;
// DeviceManagerClass manager = new DeviceManagerClass();
// Device WiaDev = null;
// CommonDialogClass devCdc = new WIA.CommonDialogClass();
// if (string.IsNullOrEmpty(DefaultScaner))
// {
// WiaDev = devCdc.ShowSelectDevice(WiaDeviceType.ScannerDeviceType, true, false);
// if (WiaDev != null)
// {
// XmlHelper.UpdateConfig("DefaultScan", WiaDev.DeviceID);
// }
// }
// else
// {
// foreach (DeviceInfo info in manager.DeviceInfos)
// {
// if (info.Type != WiaDeviceType.ScannerDeviceType) continue;
// if (info.DeviceID == DefaultScaner)
// {
// WiaDev = info.Connect();
// break;
// }
// }
// }
// if (WiaDev == null)
// {
// WiaDev = devCdc.ShowSelectDevice(WiaDeviceType.ScannerDeviceType, true, false);
// if (WiaDev != null)
// {
// XmlHelper.UpdateConfig("DefaultScan", WiaDev.DeviceID); ;
// }
// else
// {
// throw new Exception("请确认扫描仪是否正常连接！");
// }
// }
// Property documentHandlingSelect1 = null;
// foreach (Property prop in WiaDev.Properties)
// {
// if (prop.PropertyID == WIA_PROPERTIES.WIA_DPS_DOCUMENT_HANDLING_SELECT)
// {
// documentHandlingSelect1 = prop;
// object obj = new object();
// obj = (WIA_DPS_DOCUMENT_HANDLING_SELECT.FEEDER);
// documentHandlingSelect1.set_Value(ref obj);
// }
// else if (prop.PropertyID == 3013)
// {
// object val = 1;
// prop.set_Value(ref val);
// }
// //Pages
// else if (prop.PropertyID == 3096)
// {
// object val = 1;
// prop.set_Value(ref val);
// }
// else if (prop.PropertyID == WIA_PROPERTIES.WIA_DPS_DOCUMENT_HANDLING_STATUS)
// {
// documentHandlingSelect1 = prop;
// }
// }
// Item item = WiaDev.Items[1];
// foreach (WIA.Property itemProperty in item.Properties)
// {
// //IProperty tempProperty;
// Object tempNewProperty;
// if (itemProperty.Name.Equals("Horizontal Resolution"))
// {
// tempNewProperty = 100;
// ((IProperty)itemProperty).set_Value(ref tempNewProperty);
// }
// else if (itemProperty.Name.Equals("Vertical Resolution"))
// {
// tempNewProperty = 100;
// ((IProperty)itemProperty).set_Value(ref tempNewProperty);
// }
// //else if (itemProperty.Name.Equals("Horizontal Extent"))
// //{
// // //tempNewProperty = 619;
// // //((IProperty)itemProperty).set_Value(ref tempNewProperty);
// //}
// //else if (itemProperty.Name.Equals("Vertical Extent"))
// //{
// // //tempNewProperty = 876;
// // //((IProperty)itemProperty).set_Value(ref tempNewProperty);
// //}
// }
// CommonDialogClass cdc = new WIA.CommonDialogClass();
// try
// {
// imageFile = cdc.ShowTransfer(item, wiaFormatJPEG, false) as ImageFile;
// }
// catch (System.Runtime.InteropServices.COMException ex)
// {
// imageFile = null;
// }
// while (imageFile != null)
// {
// var buffer = imageFile.FileData.get_BinaryData() as byte[];
// imageFile.SaveFile(Path.Combine(LocalSavePath, DateTime.Now.Millisecond + ".jpg"));
// using (MemoryStream ms = new MemoryStream())
// {
// ms.Write(buffer, 0, buffer.Length);
// imgs.Add(System.Drawing.Image.FromStream(ms));
// }
// imageFile = null;
// try
// {
// imageFile = cdc.ShowTransfer(item, wiaFormatJPEG, false) as ImageFile;
// }
// catch (Exception ex)
// {
// return imgs;
// throw new Exception(ex.Message);
// }
// }
// return imgs;
//}
}
