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