public void Close()
{
if (SourceId.Id != 0)
{
UserInterface userInterface = new UserInterface();
TwainResult result = Twain32Native.DsUserInterface(
_applicationId,
SourceId,
DataGroup.Control,
DataArgumentType.UserInterface,
Message.DisableDS,
userInterface);
if (result != TwainResult.Failure)
{
result = Twain32Native.DsmIdentity(
_applicationId,
IntPtr.Zero,
DataGroup.Control,
DataArgumentType.Identity,
Message.CloseDS,
SourceId);
}
}
}
/// <summary>
/// 接下來就交給source控制這個流程。MSG_XFERREADY, MSG_CLOSEDSREQ, or MSG_CLOSEDSOK messages會傳回來，其中MSG_XFERREADY代表source準備好從state 5→6。
/// </summary>
/// <param name="settings"></param>
/// <returns></returns>
public bool Enable(ScanSettings settings)
{
UserInterface ui = new UserInterface();
ui.ShowUI = (settings.ShowTwainUI ? TwainBool.True : TwainBool.False);
ui.ModalUI = TwainBool.False;
ui.ParentHand = _messageHook.WindowHandle;
var result = Twain32Native.DsUserInterface(
_applicationId,
SourceId,
DataGroup.Control,
DataArgumentType.UserInterface,
Message.EnableDS,
ui);
if (result != TwainResult.Success)
{
Console.WriteLine("Enable() error! return=" + result);
Logger.WriteLog(LOG_LEVEL.LL_SUB_FUNC, "Enable() error! return=" + result);
Dispose();
return(false);
}
return(true);
}
public void Close()
{
if (SourceId.Id != 0)
{
try
{
UserInterface userInterface = new UserInterface();
TwainResult result = Twain32Native.DsUserInterface(
_applicationId,
SourceId,
DataGroup.Control,
DataArgumentType.UserInterface,
Message.DisableDS,
userInterface);
if (result != TwainResult.Failure)
{
result = Twain32Native.DsmIdentity(
_applicationId,
IntPtr.Zero,
DataGroup.Control,
DataArgumentType.Identity,
Message.CloseDS,
SourceId);
}
}
catch
{
// ignore this is bypass an error that if trigerd needs the whole twain classto be reinitialised
}
}
}
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);
}
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);
}