1 files changed, 8 insertions, 2 deletions
diff --git a/iup/srccontrols/iup_dial.c b/iup/srccontrols/iup_dial.c
index 1dd2d0f..c8c5656 100755
--- a/iup/srccontrols/iup_dial.c
+++ b/iup/srccontrols/iup_dial.c
@@ -640,7 +640,7 @@ static int iDialWheel_CB(Ihandle* ih, float delta)
 static char* iDialGetValueAttrib(Ihandle* ih)
 {
   char* str = iupStrGetMemory(20);
-  sprintf(str, "%f", ih->data->angle);
+  sprintf(str, "%g", ih->data->angle);
   return str;
 }
 
@@ -665,7 +665,7 @@ static int iDialSetDensityAttrib(Ihandle* ih, const char* value)
 static char* iDialGetDensityAttrib(Ihandle* ih)
 {
   char* str = iupStrGetMemory(20);
-  sprintf(str, "%f", ih->data->density);
+  sprintf(str, "%g", ih->data->density);
   return str;
 }
 
@@ -780,10 +780,16 @@ static int iDialMapMethod(Ihandle* ih)
 static void iDialUnMapMethod(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 iDialCreateMethod(Ihandle* ih, void **params)