Index: mouse.h
===================================================================
--- mouse.h	(revision 50)
+++ mouse.h	(revision 51)
@@ -29,7 +29,7 @@
 %%(c)raydium_mouse_move(raydium_window_tx/2, raydium_window_ty/2);%%
 **/
 
-char raydium_mouse_isvisible(void);
+signed char raydium_mouse_isvisible(void);
 /**
 Returns true or false (0 or 1), if the mouse is visible or not.
 See ##raydium_mouse_show()## and ##raydium_mouse_hide()## above.