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Diffstat (limited to 'extensions/source/scanner/scanwin.cxx')
-rw-r--r--extensions/source/scanner/scanwin.cxx5
1 files changed, 4 insertions, 1 deletions
diff --git a/extensions/source/scanner/scanwin.cxx b/extensions/source/scanner/scanwin.cxx
index dfa4b84fa541..fb4fc1592579 100644
--- a/extensions/source/scanner/scanwin.cxx
+++ b/extensions/source/scanner/scanwin.cxx
@@ -323,7 +323,10 @@ bool ImpTwain::ImplHandleMsg( void* pMsg )
PTWAINMSG pMess = (PTWAINMSG) pMsg;
TW_EVENT aEvt = { pMess, MSG_NULL };
- nRet = PFUNC( &aAppIdent, &aSrcIdent, DG_CONTROL, DAT_EVENT, MSG_PROCESSEVENT, &aEvt );
+ if (pDSM)
+ nRet = PFUNC( &aAppIdent, &aSrcIdent, DG_CONTROL, DAT_EVENT, MSG_PROCESSEVENT, &aEvt );
+ else
+ nRet = TWRC_NOTDSEVENT;
if( aEvt.TWMessage != MSG_NULL )
{