typedef struct _GdkDeviceInfo GdkDeviceInfo;
typedef struct _GdkTimeCoord GdkTimeCoord;
typedef struct _GdkRegion GdkRegion;
-typedef gint (*GdkEventFunc) (GdkEvent *event,
+typedef void (*GdkEventFunc) (GdkEvent *event,
gpointer data);
typedef struct _GdkIC GdkIC;