UI and query?

[maya2000]

hi....

after running this cide:

#...create new button Window:

mc.window('ss')

mc.frameLayout ('ABC')

mc.button(label='createNewButton', command="mc.setParent('ABC');mc.button(label='newButton')")

mc.showWindow('ss')

#end.....

when press "createNewButton" button,maya in the "ABC" frameLayout craete a new button....now how query new button name, when press it?

sorry...my english is bad!....

[Justin Israel]

Hi,

What problem are you trying to solve, exactly? The reason I ask is because there are multiple ways to answer this question depending on what your goal is, and whether this is just a trivial example of testing out UI, or if you actually have a use case.

Here are two examples:

import maya.cmds as mc def create_button(*args): mc.setParent('ABC') name = mc.button(label='newButton') # Do something with button name print name mc.window('ss') mc.frameLayout ('ABC') mc.button(label='create1', command="mc.setParent('ABC');mc.button(label='newButton')") mc.button(label='create2', command=create_button) mc.showWindow('ss') # Get the last button that was created in the layout lastButton = mc.layout('ABC', q=True, childArray=True)[-1]

You can query for the last button that was created, by asking the layout. But it would seem the more useful approach is to not use string commands, but rather a callable. This callable will give you more control over creating the button by actually being able to save the name of the button and do something with it. 

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[maya2000]

Thank!

i dont want query for the last button....

i write a programe...it create a new menu Item(or button):

the new menuItem run a function...now the function have a argument...i want>>>the argument=menuItem name:

example:

import maya.cmds as mc mc.window() mc.frameLayout ('ABC') mc.button(label='create1', command="NI()") mc.showWindow() import random def NI(): mc.setParent('ABC') mc.symbolButton(image='setKeyframe.png', command='pass' ) mc.popupMenu(button=1 ) ind=random.randrange(1,1000) mc.menuItem('new'+str(ind),label='new root',c='mc.polyCube(n="new")')## new=menuItem Name thet press....<<<<<<<<<

now i want when press menuItem(example) , my program create new cube thet...cube name is menuItem name that press.... 

[Justin Israel]

First, like my previous example, you should ditch using strings for your callbacks when they are just calling your own functions, and just reference the callable object:

def someCallback(*args):
    print "callback!"

mc.button(command=someCallback)

​

That being said, you can name your polyCube the same way you are generating a name for the menuItem:

name = 'new%d' % ind
mc.menuItem(name, label=name, c='mc.polyCube(n=%r)' % name)

​

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[maya2000]

ok....Thank,.Thank

[Jesse Kretschmer]

Thank you Justin for so consistently providing some great explanations and examples. However, I would like to point out that the command parameter for the menuItem() and button() methods can be any callable python object.

I prefer to avoid using strings for the command parameter. This allows for my text editor to maintain syntax highlighting and also some basic code inspection (pylint).

def button_clicked(name):
    print "Clicked button: '%s'" % name

for name in ['one','two','three']:
    mc.button(label=name ,command=lambda x=name: button_clicked(x))

Note:  If you use a lambda, be aware that it is important to localize any variables used within the lambda. The x=name creates a new reference to the name variable which belongs to the lambda function.

[Justin Israel]

No problem. But I did point out in my first reply that it is preferable to use callable object ;-)

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