in new scene launch this code:
from maya import cmds, OpenMaya
msl = OpenMaya.MSelectionList()
def get_object(s):
mo = OpenMaya.MObject()
msl.clear()
msl.add(s)
msl.getDependNode(0, mo)
return mo
def cb(*args, **kwargs):
msg = args[0]
plug = args[1]
other_plug = args[2]
print msg
print '----- Attribute {0} Change'.format(plug.name())
s_attr = 'className'
s_node_1 = cmds.createNode('transform', name='Node1')
mo_node_1 = get_object(s_node_1)
cmds.addAttr(s_node_1, longName=s_attr, dataType='string')
s_node_2 = cmds.createNode('transform', name='Node2')
cmds.addAttr(s_node_2, longName=s_attr, dataType='string')
i_call_back_id =
OpenMaya.MNodeMessage().addAttributeChangedCallback(get_object(s_node_2),
cb)
cmds.connectAttr('{0}.{1}'.format(s_node_1, s_attr),
'{0}.{1}'.format(s_node_2, s_attr))
If you change the value of *Node1.className* nothing is printed in script
editor.
If you disconnect *Node1.className* to *Node2.className* and change value
of attribute *Node2.className *I have my print of my callback.
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