rem: if (Parent() != NULL) SetViewColor(Parent()->ViewColor()); else SetViewColor(ui_color(B_PANEL_BACKGROUND_COLOR));
add: SetTarget(Window());  fPositionControl->SetTarget(this); fPositionSlider->SetTarget(this);
context: IconView::AttachedToWindow(){	if (Parent() != NULL)		SetViewColor(Parent()->ViewColor());	else		SetViewColor(ui_color(B_PANEL_BACKGROUND_COLOR));}