1 files changed, 6 insertions, 0 deletions
diff --git a/iup/srccontrols/iup_cells.c b/iup/srccontrols/iup_cells.c
index d9a7fe4..c771d6e 100755
--- a/iup/srccontrols/iup_cells.c
+++ b/iup/srccontrols/iup_cells.c
@@ -882,10 +882,16 @@ static int iCellsMapMethod(Ihandle* ih)
 static void iCellsUnMapMethod(Ihandle* ih)
 {
   if (ih->data->cddbuffer)
+  {
     cdKillCanvas(ih->data->cddbuffer);
+    ih->data->cddbuffer = NULL;
+  }
 
   if (ih->data->cdcanvas)
+  {
     cdKillCanvas(ih->data->cdcanvas);
+    ih->data->cdcanvas = NULL;
+  }
 }
 
 static int iCellsCreateMethod(Ihandle* ih, void **params)