/*
Should be called from the main message loop of the application. Can always be called,
it will not process the message unless a scan is in progress.
*/
BOOL CTwain::ProcessMessage(MSG msg)
{
if(SourceEnabled()){
TW_UINT16 twRC = TWRC_NOTDSEVENT;
TW_EVENT twEvent;
memset(&twEvent, 0, sizeof(TW_EVENT));
// twEvent.TWMessage = MSG_NULL;
twEvent.pEvent = (TW_MEMREF)&msg;
twRC = CallDSMEntry(&m_AppId,&m_Source,DG_CONTROL,DAT_EVENT,MSG_PROCESSEVENT,(TW_MEMREF)&twEvent);
// CallTwainProc(&m_AppId,&m_Source,DG_CONTROL,DAT_EVENT,MSG_PROCESSEVENT,(TW_MEMREF)&twEvent);
// if(GetRC() != TWRC_NOTDSEVENT)
// {
TranslateMessage(twEvent);
// }
// tell the caller what happened
return (twRC==TWRC_DSEVENT); // returns TRUE or FALSE
}
return FALSE;
}
/** Should be called from the main message loop of the application. Can always be called,
it will not process the message unless a scan is in progress.
*/
bool TwainIface::ProcessMessage(MSG msg)
{
if(SourceEnabled())
{
TW_UINT16 twRC = TWRC_NOTDSEVENT;
TW_EVENT twEvent;
twEvent.pEvent = (TW_MEMREF)&msg;
//memset(&twEvent, 0, sizeof(TW_EVENT));
twEvent.TWMessage = MSG_NULL;
CallTwainProc(&m_AppId, &m_Source, DG_CONTROL,
DAT_EVENT, MSG_PROCESSEVENT, (TW_MEMREF)&twEvent);
if(GetRC() != TWRC_NOTDSEVENT)
{
TranslateMessage(twEvent);
}
return (twRC==TWRC_DSEVENT);
}
return false;
}
/*
Gets Imageinfo for an image which is about to be transferred.
*/
BOOL CTwain::GetImageInfo(TW_IMAGEINFO& info)
{
if(SourceEnabled())
{
return CallTwainProc(&m_AppId,&m_Source,DG_IMAGE,DAT_IMAGEINFO,MSG_GET,(TW_MEMREF)&info);
}
return FALSE;
}
/** Gets Imageinfo for an image which is about to be transferred.
*/
bool TwainIface::GetImageInfo(TW_IMAGEINFO& info)
{
if(SourceEnabled())
{
return CallTwainProc(&m_AppId, &m_Source, DG_IMAGE,
DAT_IMAGEINFO, MSG_GET, (TW_MEMREF)&info);
}
return false;
}
/*
Should be called from the main message loop of the application. Can always be called,
it will not process the message unless a scan is in progress.
*/
BOOL CTwain::ProcessMessage(MSG msg)
{
if(SourceEnabled())
{
#if 1
TW_UINT16 twRC = TWRC_NOTDSEVENT;
TW_EVENT twEvent;
memset(&twEvent, 0, sizeof(TW_EVENT));
// twEvent.TWMessage = MSG_NULL;
twEvent.pEvent = (TW_MEMREF)&msg;
twRC = CallDSMEntry(&m_AppId,&m_Source,DG_CONTROL,DAT_EVENT,MSG_PROCESSEVENT,(TW_MEMREF)&twEvent);
// if (twRC != TWRC_DSEVENT)
// return FALSE;
// CallTwainProc(&m_AppId,&m_Source,DG_CONTROL,DAT_EVENT,MSG_PROCESSEVENT,(TW_MEMREF)&twEvent);
// if(GetRC() != TWRC_NOTDSEVENT)
// {
if (!_bTwainContinue)
{
twEvent.TWMessage = MSG_CLOSEDSREQ;
}
TranslateMessage(twEvent);
// }
// tell the caller what happened
return (twRC == TWRC_DSEVENT); // returns TRUE or FALSE
// return TRUE;
#else
TW_EVENT twEvent;
twEvent.pEvent = (TW_MEMREF)&msg;
twEvent.TWMessage = MSG_NULL;
CallTwainProc(&m_AppId,&m_Source,DG_CONTROL,DAT_EVENT,MSG_PROCESSEVENT,(TW_MEMREF)&twEvent);
if(GetRC() != TWRC_NOTDSEVENT)
{
TRACE("********** ProcessMessage ************\n");
TranslateMessage(twEvent);
}
return FALSE;
#endif
}
else
{
// TRACE("********** ProcessMessage SourceEnabled = false ************\n");
}
return FALSE;
}
/*
Called to disable the source.
*/
BOOL CTwain::DisableSource()
{
if(SourceEnabled())
{
if(CallTwainProc(&m_AppId,&m_Source,DG_CONTROL,DAT_USERINTERFACE,MSG_DISABLEDS,&twUI))
{
m_bSourceEnabled = FALSE;
return TRUE;
}
}
return FALSE;
}
/** Called to disable the source.
*/
bool TwainIface::DisableSource()
{
if(SourceEnabled())
{
TW_USERINTERFACE twUI;
if(CallTwainProc(&m_AppId, &m_Source, DG_CONTROL,
DAT_USERINTERFACE, MSG_DISABLEDS, &twUI))
{
m_bSourceEnabled = false;
return true;
}
}
return false;
}
/*
Should be called from the main message loop of the application. Can always be called,
it will not process the message unless a scan is in progress.
*/
BOOL CTwain::ProcessMessage(MSG msg)
{
if(SourceEnabled())
{
TW_EVENT twEvent;
twEvent.pEvent = (TW_MEMREF)&msg;
twEvent.TWMessage = MSG_NULL;
CallTwainProc(&m_AppId,&m_Source,DG_CONTROL,DAT_EVENT,MSG_PROCESSEVENT,(TW_MEMREF)&twEvent);
if(GetRC() != TWRC_NOTDSEVENT)
{
TranslateMessage(twEvent);
}
return FALSE;
}
return FALSE;
}
/*
Called to enable the Twain Acquire Dialog. This too can be
overridden but is a helluva job .
*/
BOOL CTwain::EnableSource(BOOL showUI)
{
if(DSOpen() && !SourceEnabled())
{
twUI.ShowUI = showUI; //FALSE
twUI.hParent = (TW_HANDLE)m_hMessageWnd;
if(CallTwainProc(&m_AppId,&m_Source,DG_CONTROL,DAT_USERINTERFACE,MSG_ENABLEDS,(TW_MEMREF)&twUI))
{
m_bSourceEnabled = TRUE;
m_bModalUI = twUI.ModalUI;
}
else
{
m_bSourceEnabled = FALSE;
m_bModalUI = TRUE;
}
return m_bSourceEnabled;
}
return FALSE;
}
/** Called to enable the Twain Acquire Dialog. This too can be
overridden but is a helluva job .
*/
bool TwainIface::EnableSource(bool showUI)
{
if(DSOpen() && !SourceEnabled())
{
TW_USERINTERFACE twUI;
twUI.ShowUI = showUI;
twUI.hParent = (TW_HANDLE)m_hMessageWnd;
if(CallTwainProc(&m_AppId, &m_Source, DG_CONTROL,
DAT_USERINTERFACE, MSG_ENABLEDS, (TW_MEMREF)&twUI))
{
m_bSourceEnabled = true;
m_bModalUI = twUI.ModalUI;
}
else
{
m_bSourceEnabled = false;
m_bModalUI = true;
}
return m_bSourceEnabled;
}
return false;
}
