SirJames SirJames - 4 days ago 4
Python Question

Replace text in textField with object's name via Pymel

I've realised that there were similar questions located here:
textfield query and prefix replacing

and here:
Python - Change the textField after browsing - MAYA

However, these do not address the issue if you have two definitions and need the text in the

to be queried (actually change the text in the

I know from experience that doing what I have below in MelScript actually works, but for the sake of Python, and learning how to do it in Python, it seems to not work. Am I missing something? Do I need a
to get the name of the object selected and query the

I have an example (a snip-bit of what needs to be fixed):

from pymel.core import *

def mainWindow():

window( 'myWin' )
columnLayout( adj = 1 )
button( 'retopoplz', ann = 'Select a Mesh to Retopologize', bgc = [ .15, .15, .15 ], l = 'START RETOPOLOGY', c = 'Retopo( TextToMakeLive )' )
TextToMakeLive = textField( ann = 'Mesh Selected', bgc = [ .2, 0, 0 ], edit = 0, tx = 'NONE' )
setParent( '..' )
showWindow( 'myWin' )

def Retopo( TextToMakeLive ):

# This tool selects the object to retopologize
MakeLiveField = textField( TextToMakeLive, q = 1, tx = 1 )
MakeSelectionLive = ( ls( sl = 1 ) )

if MakeSelectionLive is None:
warning( 'Please select an object to retopologize' )

if MakeSelectionLive == 1:
TextToMakeLive = textField( TextToMakeLive, ed = 1, tx = MakeSelectionLive, bgc = [ 0, .2, 0 ] )
shape = ls( s = MakeSelectionLive[ 0 ] )
setAttr( ( shape + '.backfaceCulling' ), 3 )
createDisplayLayer( n = 'RetopoLayer', num = 1, nr = 1 )
makeLive( shape )
print( 'Retopology Activated!' )
warning( 'Select only ONE Object' )



GUI objects can always be edited -- including changing their commands -- as long as you store their names. So your mainWindow() could return the name(s) of gui controls you wanted to edit again and a second function could use those names to change the looks or behaviors of the created objects.

However, this is all much easier if you use a python class to 'remember' the names of the objects and any other state information: it's easy for the class to 'see' all the relevant info and state. Here's your original converted to classes:

from pymel.core import *
class RetopoWindow(object):

    def __init__(self):
        self.window = window('myWin')
        button('retopoplz',ann='Select a Mesh to Retopologize', bgc=[.15,.15,.15],l='START RETOPOLOGY', c = self.do_retopo)
        self.TextToMakeLive=textField(ann='Mesh Selected', bgc=[.2,0,0],edit=0,tx='NONE')

    def show(self):

    def do_retopo(self, *_):
        #This tool selects the object to retopologize
        MakeLiveField= textField(self.TextToMakeLive,q=1,tx=1)
        if MakeSelectionLive is None:
            warning('Please select an object to retopologize')
        if len( MakeSelectionLive) == 1:
            print('Retopology Activated!')
            warning('Select only ONE Object')


As for the callbacks: useful reference here