QColorDialog::getColor(QColor(1., 1., 1.), myWindow, "My Title", QColorDialog::DontUseNativeDialog);

2017-02-07 19:34:24.747 pqCoreBasicApp[1457:14006] Layout still needs update after calling -[QNSPanelContentsWrapper layout].  QNSPanelContentsWrapper or one of its superclasses may have overridden -layout without calling super. Or, something may have dirtied layout in the middle of updating it.  Both are programming errors in Cocoa Autolayout.  The former is pretty likely to arise if some pre-Cocoa Autolayout class had a method called layout, but it should be fixed.