Hi,
I got the same error, but I found a way to get it to work...
What I do is before I create the widget that is going into the Workspace I
create a dummy one. I'm guessing that the bug is due to some initialization
that is not been done on the first Workspace created, here is the dummy
dialog...
main_window_ptr = omui.MQtUtil.mainWindow()
mayaWid = QtCompat.wrapInstance(long(main_window_ptr),
QtWidgets.QWidget)
class dummyClass(MayaQWidgetDockableMixin, QtWidgets.QDialog):
def __init__(self, parent=None):
QtWidgets.QDialog.__init__(self, parent)
_dummyUI = dummyClass(mayaWid)
_dummyUI.setObjectName("DockingDummyWindow")
workspaceControlName = _dummyUI.objectName() + 'WorkspaceControl'
_dummyUI.show(dockable=True, area='right', floating=False)
cmds.workspaceControl(workspaceControlName, e=True,
ttc=["AttributeEditor", -1], wp="preferred",
mw=420)
cmds.workspaceControl(workspaceControlName, e=True, close=True)
cmds.deleteUI(workspaceControlName, control=True)
Once this is deleted, you add the code that creates the real UI.
It works for me, so maybe try it out.
Cheers,
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