SetDesktop
fTopLeft->SetDesktop(isDesktop);
fTop->SetDesktop(isDesktop);
fTopRight->SetDesktop(isDesktop);
fLeft->SetDesktop(isDesktop);
fRight->SetDesktop(isDesktop);
fBottomLeft->SetDesktop(isDesktop);
fBottom->SetDesktop(isDesktop);
fBottomRight->SetDesktop(isDesktop);
void SetDesktop(bool isDesktop);
fEventDispatcher.SetDesktop(this);
void SetDesktop(Desktop* desktop);
fDrawView->SetDesktop(this);
void SetDesktop(Desktop* desktop);