The Quake sources as originally release under the GPL license on December 21, 1999

QW/client/in_null.c

@@ -0,0 +1,29 @@
+// in_null.c -- for systems without a mouse
+
+#include "quakedef.h"
+
+void IN_Init (void)
+{
+}
+
+void IN_Shutdown (void)
+{
+}
+
+void IN_Commands (void)
+{
+}
+
+void IN_Move (usercmd_t *cmd)
+{
+}
+
+/*
+===========
+IN_ModeChanged
+===========
+*/
+void IN_ModeChanged (void)
+{
+}
+