Quick shortcuts for numeric transparency levels (Issue 154) (defaults 1-9 and 0). Shortcut for all effects off (default shift-E)

git-svn-id: svn://pulkomandy.tk/GrafX2/trunk@864 416bcca6-2ee7-4201-b75f-2eb2f807beb1

buttons.h

@@ -425,6 +425,17 @@ void Button_Tiling_mode(void);
     Displays the tiling setup menu.
 */
 void Button_Tiling_menu(void);
+
+/*!
+    Callback for the command that turns off all drawaing effects.
+*/
+void Effects_off(void);
+
+/*!
+    Command that sets the transparency level.
+*/
+void Transparency_set(byte amount);
+
 // Menu des effets
 
 /*!