public string[]? PromptForImage(IntPtr parentWindowHandle, WiaDevice device, string?tempFolder = null)
{
tempFolder ??= Path.GetTempPath();
var fileName = Path.GetRandomFileName();
IntPtr itemHandle = IntPtr.Zero;
int fileCount = 0;
string[] filePaths = new string[0];
var hr = Version == WiaVersion.Wia10
? NativeWiaMethods.GetImage1(Handle, parentWindowHandle, SCANNER_DEVICE_TYPE, 0, 0, Path.Combine(tempFolder, fileName), IntPtr.Zero)
: NativeWiaMethods.GetImage2(Handle, 0, device.Id(), parentWindowHandle, tempFolder, fileName, ref fileCount, ref filePaths, ref itemHandle);
if (hr == 1)
{
return(null);
}
WiaException.Check(hr);
return(filePaths ?? new[] { Path.Combine(tempFolder, fileName) });
}
public static bool FeederReady(this WiaDevice device)
{
int status = (int)device.Properties[WiaPropertyId.DPS_DOCUMENT_HANDLING_STATUS].Value;
return((status & WiaPropertyValue.FEED_READY) != 0);
}
public static bool SupportsDuplex(this WiaDevice device)
{
int capabilities = (int)device.Properties[WiaPropertyId.DPS_DOCUMENT_HANDLING_CAPABILITIES].Value;
return((capabilities & WiaPropertyValue.DUPLEX) != 0);
}