A drop-down menu.
Child of: <click>, <drag_drop>, <drag_move>, <mouse_click>, <mouse_down>, <mouse_move>, <mouse_out>, <mouse_over>, <node name="">, <press>, <release>
Parent of: <title>, <font>, <font_size>, <x>, <y>, <height>, <width>, <opacity>, <dropdown_color>, <dropdown_opacity>, <next_node>, <items>
Example:
<dropdown>
<title>Click here for a drop-down menu!</title>
<font>Arial</font>
<font_size>14</font_size>
<x>50</x>
<y>125</y>
<height>35</height>
<width>95</width>
<opacity>.3</opacity>
<dropdown_color>0xFFFFFF</dropdown_color>
<dropdown_opacity>.1</dropdown_opacity>
<next_node>a_node</next_node>
<items>
<item label="Choice 1" data="1"/>
<item label="Choice 2" data="2"/>
<item label="Choice 3" data="3"/>
</items>
</dropdown>