added helpful comment on usage of virtualHook

1 files changed, 6 insertions, 0 deletions

diff --git a/libopie/odevice.h b/libopie/odevice.h
index a232d69..650a2da 100644
--- a/libopie/odevice.h
+++ b/libopie/odevice.h
@@ -183,6 +183,12 @@ public:
         virtual bool setDisplayContrast ( int contrast );
         virtual int displayContrastResolution ( ) const;
 
+        // don't add new virtual methods, use this:
+                ///*virtual */ void boo(int i ) { return virtual_hook(1,&i); };
+        // and in your subclass do do overwrite
+                //protected virtual int virtual_hook(int, void *)
+        // which is defined below
+
 // input / output
         //FIXME playAlarmSound and al might be better -zecke
         virtual void alarmSound ( );