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May 6, 2021 12:57
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MotionBuilder Python startup "Deferred" Qt script
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#! /usr/bin/env python | |
# -*- coding: utf-8 -*- | |
""" | |
"Hacky" example that shows how to use OnUIIdle callback to defer a function call until MotionBuilder UI is properly | |
""" | |
from __future__ import print_function, division, absolute_import | |
try: | |
from PySide.QtWidgets import QApplication, QMenuBar | |
except ImportError: | |
from PySide2.QtWidgets import QApplication, QMenuBar | |
def get_main_qt_window(): | |
parent = QApplication.activeWindow() | |
grand_parent = parent | |
while grand_parent is not None: | |
parent = grand_parent | |
grand_parent = parent.parent() | |
return parent | |
def _on_uiidle_fn(*args, **kwargs): | |
main_window = get_main_qt_window() | |
if not main_window: | |
return | |
# accessing QMenuBar using main_window.menuBar() can cause MotionBuilder to crash | |
parent_menubar = main_window.findChild(QMenuBar) | |
if not parent_menubar: | |
return | |
init_cpg() | |
def init(): | |
# this will be called once Qt is fully loaded and you will be able to access and interact with Qt main window menubar without | |
# problems. | |
# CODE_HERE | |
fbsys.OnUIIdle.Remove(_on_uiidle_fn) | |
fbsys.OnUIIdle.Add(_on_uiidle_fn) |
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Thanks a lot for sharing this. 🙏