public static extern TwainResult DsUserInterface([In, Out] Identity origin, [In, Out] Identity dest, DataGroup dg, DataArgumentType dat, Message msg, UserInterface ui);
public static extern TwainResult DsUserInterface([In, Out] Identity origin, [In, Out] Identity dest, DataGroup dg, DataArgumentType dat, Message msg, UserInterface ui);
public bool Enable(ScanSettings settings)
{
UserInterface ui = new UserInterface();
ui.ShowUI = (short)(settings.ShowTwainUI ? 1 : 0);
ui.ModalUI = 1;
ui.ParentHand = _messageHook.WindowHandle;
var result = Twain32Native.DsUserInterface(
_applicationId,
SourceId,
DataGroup.Control,
DataArgumentType.UserInterface,
Message.EnableDS,
ui);
if (result != TwainResult.Success)
{
Dispose();
return false;
}
return true;
}
public void Close()
{
if (SourceId.Id != 0)
{
UserInterface userInterface = new UserInterface();
TwainResult result = Twain32Native.DsUserInterface(
_applicationId,
SourceId,
DataGroup.Control,
DataArgumentType.UserInterface,
Message.DisableDS,
userInterface);
result = Twain32Native.DsmIdentity(
_applicationId,
IntPtr.Zero,
DataGroup.Control,
DataArgumentType.Identity,
Message.CloseDS,
SourceId);
}
}
public bool Disable()
{
if (SourceState != null && SourceState >= TwainState.SourceEnabled)
{
if (SourceId.Id != 0)
{
var userInterface = new UserInterface();
TwainResult result = Twain32Native.DsUserInterface(
_applicationId,
SourceId,
DataGroup.Control,
DataArgumentType.UserInterface,
Message.DisableDS,
userInterface);
if (result != TwainResult.Failure)
{
_log.Debug(string.Format("DisableDS, result: {0}", result));
SourceState = TwainState.SourceOpen;
return true;
}
var condition = DataSourceManager.GetConditionCode(_applicationId, SourceId);
_log.Debug(string.Format("DisableDS, result: {0}, conditionCode: {1}", result, condition));
return false;
}
return false;
}
return false;
}
public bool Enable(ScanSettings settings)
{
var ui = new UserInterface();
ui.ShowUI = (short)(settings.ShowTwainUI ? 1 : 0);
ui.ModalUI = 0;
ui.ParentHand = _messageHook.WindowHandle;
var result = Twain32Native.DsUserInterface(
_applicationId,
SourceId,
DataGroup.Control,
DataArgumentType.UserInterface,
Message.EnableDS,
ui);
_log.Debug(string.Format("EnableDS, result: {0}", result));
if (result != TwainResult.Success)
{
Dispose();
return false;
}
SourceState = TwainState.SourceEnabled;
return true;
}
