RemoveObserver
bool RemoveObserver(LiveSettingsObserver *observer);
fSettings->RemoveObserver(this);
fDocument->CommandStack()->RemoveObserver(this);
fSelection->RemoveObserver(this);
fManipulatedObject->RemoveObserver(this);
bool RemoveObserver(Observer* observer);
fSelection->RemoveObserver(this);
fObject->RemoveObserver(this);
path->RemoveObserver(this);
shape->RemoveObserver(this);
style->RemoveObserver(this);
fGradientControl->Gradient()->RemoveObserver(this);
fGradient->RemoveObserver(this);
fStyle->RemoveObserver(this);
fCurrentColor->RemoveObserver(this);
fGradient->RemoveObserver(this);
fCurrentColor->RemoveObserver(this);
transformer->RemoveObserver(this);
fPath->RemoveObserver(this);
fShape->RemoveObserver(this);
fGradient->RemoveObserver(this);
fGradient->RemoveObserver(this);
fShapes[i]->RemoveObserver(this);
fShapes[i]->RemoveObserver(this);
shape->RemoveObserver(this);
transformer->RemoveObserver(this);
fStyle->RemoveObserver(this);
fGradient->RemoveObserver(this);
fShape->RemoveObserver(this);