--- /dev/null
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void ShowGraphWindow(void);
+void HideGraphWindow(void);
+void RepaintGraphWindow(void);
+void MainGraphics(void);
+void InitGraphics(int argc, char **argv);
+void ExitGraphics(void);
+
+#define MAX_GRAPH_TRACE_LEN (1024*128)
+extern int GraphBuffer[MAX_GRAPH_TRACE_LEN];
+extern int GraphTraceLen;
+extern double CursorScaleFactor;
+extern int PlotGridX, PlotGridY;
+extern int CommandFinished;
+extern int offline;
+
+#ifdef __cplusplus
+}
+#endif