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-rw-r--r--src/emu/video.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/emu/video.h b/src/emu/video.h
index f8c4e9251cd..27980b0c910 100644
--- a/src/emu/video.h
+++ b/src/emu/video.h
@@ -87,7 +87,7 @@ struct _screen_config
in the VBLANK state
-------------------------------------------------*/
-typedef void (*vblank_state_changed_func)(const device_config *device, int vblank_state);
+typedef void (*vblank_state_changed_func)(const device_config *device, void *param, int vblank_state);
@@ -209,7 +209,7 @@ attotime video_screen_get_frame_period(const device_config *screen);
UINT64 video_screen_get_frame_number(const device_config *screen);
/* registers a VBLANK callback for the given screen */
-void video_screen_register_vblank_callback(const device_config *screen, vblank_state_changed_func vblank_callback);
+void video_screen_register_vblank_callback(const device_config *screen, vblank_state_changed_func vblank_callback, void *param);
/* ----- video screen device interface ----- */