More playlist modifications; service locking

[melted] / mlt++ / src / MltProperties.cpp

diff --git a/mlt++/src/MltProperties.cpp b/mlt++/src/MltProperties.cpp
index fdda0e6..868b77a 100644 (file)
--- a/mlt++/src/MltProperties.cpp
+++ b/mlt++/src/MltProperties.cpp
@@ -78,12 +78,12 @@ int Properties::ref_count( )
 
 void Properties::block( void *object )
 {
-       mlt_events_block( get_properties( ), object );
+       mlt_events_block( get_properties( ), object != NULL ? object : get_properties( ) );
 }
 
 void Properties::unblock( void *object )
 {
-       mlt_events_unblock( get_properties( ), object );
+       mlt_events_unblock( get_properties( ), object != NULL ? object : get_properties( ) );
 }
 
 void Properties::fire_event( const char *event )