Houdini Parameter UI

Links

• Driving Parameters using Dictionary Attributes
  Using attribfromparm node to obtain node parameters, changing them and passing to another node using spare input

• Custom Attribute Menu with Multiparm Blocks and VEX

Tips

Callbacks

Callback script for a button (or else)
Where pydef is another UI parameter of type String/Python
And kwargs['node'] refers the node itself (equal to node = hou.pwd()).

exec(kwargs['node'].parm('pydef').eval())

Then in the pydef code block do not forget to start with referring the node to get its parameters.

node = hou.pwd()
node.parm('paramname').eval()
node.parm('paramname').set(1)

Param fileds

Disable/hide when params syntax:

{ param == 0 }

Multiparam block

The params get the # symbol in the end, that is a placeholder for the item's number in the list
If the parameter's size is bigger than one, it gets two indexes #_#