Configuring mouse scroll wheel actions
You might use a private.xml like this with KeyRemap4MacBook:

&lt;?xml version="1.0"?&gt;
&lt;root&gt;
  &lt;item&gt;
    &lt;name&gt;test&lt;/name&gt;
    &lt;identifier&gt;test&lt;/identifier&gt;
    &lt;autogen&gt;__ScrollWheelToKey__ ScrollWheel::UP, VK_CONTROL |
    ModifierFlag::NONE, KeyCode::CURSOR_LEFT, ModifierFlag::CONTROL_L&lt;/autogen&gt;
    &lt;autogen&gt;__ScrollWheelToKey__ ScrollWheel::DOWN, VK_CONTROL |
    ModifierFlag::NONE, KeyCode::CURSOR_RIGHT, ModifierFlag::CONTROL_L&lt;/autogen&gt;
  &lt;/item&gt;
&lt;/root&gt;