0024276: Memory leak due to a static variable

Cleaning of selected entities to avoid a memory leak.

src/AIS/AIS_InteractiveContext.cxx

@@ -149,6 +149,9 @@ myIsAutoActivateSelMode( Standard_True )
 
 void AIS_InteractiveContext::Delete() const
 {
+  //Clear the static current selection. Else the memory
+  //is not release
+  AIS_Selection::ClearCurrentSelection();
 #ifdef OCC172
   // to avoid an exception
   if ( AIS_Selection::Find( mySelectionName.ToCString() ) )

src/AIS/AIS_Selection.cdl

@@ -87,6 +87,8 @@ is
     ---Purpose: 
     returns mutable Selection from AIS;
     
+    ClearCurrentSelection(myclass);
+    ---Purpose: Clears selection.
 
     Select(myclass);
     ---Purpose: removes all the object of the currentselection.

src/AIS/AIS_Selection.cxx

@@ -50,9 +50,10 @@
 #define MaxSizeOfResult 100000
 #endif
 
+//current selection (handle)
+static Handle(AIS_Selection) theCurrentSelection;
 static void AIS_Sel_CurrentSelection (Handle(AIS_Selection)& InputSel)     
 {
-  static Handle(AIS_Selection) theCurrentSelection;
   if(!InputSel.IsNull())
     theCurrentSelection = InputSel;
   else
@@ -418,6 +419,11 @@ void AIS_Selection::Remove(const Standard_CString aName)
 #endif
     AIS_Sel_GetSelections().Remove(I);
   }
-  
+}
+
+// clean the static current selection handle
+void AIS_Selection::ClearCurrentSelection()
+{
+    theCurrentSelection.Nullify();
 }