<function name="IsKeyDown" parent="input" type="libraryfunc"> <description>Gets whether a key is down</description> <realm>Client and Menu</realm> <args> <arg name="key" type="number">The key, see &lt;page&gt;KEY&lt;/page&gt;.</arg> <arg name="key" type="number">The key, see <page>KEY</page>.</arg> </args> <rets> <ret name="" type="boolean">Is the key down</ret> </rets> </function> <example> <description>Show cursor if you press alt.</description> <code> hook.Add("Think", "BM_Clients_Key", function() gui.EnableScreenClicker( input.IsKeyDown( KEY_LALT ) ) end) // Note this may prevent the cursor from naturally appearing without alt </code> </example>