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-rw-r--r--src/osd/modules/osdwindow.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/osd/modules/osdwindow.h b/src/osd/modules/osdwindow.h
index 69f3675d4d0..10cbec5674f 100644
--- a/src/osd/modules/osdwindow.h
+++ b/src/osd/modules/osdwindow.h
@@ -10,6 +10,7 @@
#define __OSDWINDOW__
#include "emu.h"
+#include "ui/ui.h"
//============================================================
// TYPE DEFINITIONS
@@ -221,6 +222,7 @@ public:
virtual int init(running_machine &machine) = 0;
virtual render_primitive_list *get_primitives() = 0;
+ virtual slider_state* get_slider_list() { return nullptr; }
virtual int draw(const int update) = 0;
virtual int xy_to_render_target(const int x, const int y, int *xt, int *yt) { return 0; };
virtual void save() { };