我正在尝试从进纸器扫描几页,尽管当我调用ShowTransfer函数(不使用循环)时扫描仪会自动扫描所有页面,但我只返回了第一页。
我在做什么错?
这是我的代码:
WIA.Item item = device.Items[1] as WIA.Item;
if (pages > 1)
{
// Set to feeder
SetWIAProperty(device.Properties, 44, 1);
}
SetWIAProperty(device.Properties, WIA_DEVICE_PROPERTY_PAGES_ID, 1);
AdjustScannerSettings(item, 150, 0, 0, 1250, 1700, 0, 0, 1);
try
{
// scan image
WIA.ICommonDialog wiaCommonDialog = new WIA.CommonDialog();
WIA.ImageFile image = (WIA.ImageFile)wiaCommonDialog.ShowTransfer(item, wiaFormatBMP, false);
// save to temp file
string fileName = Path.GetTempFileName();
File.Delete(fileName);
image.SaveFile(fileName);
image = null;
// add file to output list
images.Add(Image.FromFile(fileName));
}
catch (Exception exc)
{
throw exc;
}
我认为此链接正在执行您想做的事情
http://forums.codeguru.com/showthread.php?439027-Windows-Image-Acquisition-(WIA)-Code
基本上,您需要在保存每页之后进行检查,以查看是否还有更多页面并继续循环播放
hasMorePages = false; //assume there are no more pages
if (documentHandlingSelect != null)
//may not exist on flatbed scanner but required for feeder
{
//check for document feeder
if ((Convert.ToUInt32(documentHandlingSelect.get_Value()) & WIA_DPS_DOCUMENT_HANDLING_SELECT.FEEDER) != 0)
{
hasMorePages = ((Convert.ToUInt32(documentHandlingStatus.get_Value()) & WIA_DPS_DOCUMENT_HANDLING_STATUS.FEED_READY) != 0);
}
}