make sure that HideCursor actually you know hides the cursor on all OS

Author: Remi-Gau

src/initPTB.m

@@ -49,12 +49,6 @@
     initKeyboard;
     initDebug(cfg);
 
-    % Mouse
-    if cfg.hideCursor
-        % TODO does not work on Linux: WTF???
-        HideCursor;
-    end
-
     %% Audio
     cfg = initAudio(cfg);
 
@@ -107,6 +101,11 @@
     WaitSecs(0.1);
     GetSecs;
 
+    % Mouse
+    if cfg.hideCursor
+        HideCursor(cfg.screen.win));
+    end
+
 end
 
 function cfg = getOsInfo(cfg)