> hey Tracker get Shelf of View "PoseView" of Window "Desktop" is working > as well. > Why do you think that view is named "desktop"? Because this is what I see in src/apps/login/DesktopWindow.cpp in the Haiku sources: BView *desktop = new BView(Bounds(), "desktop", B_FOLLOW_NONE, 0); But judging on its path, this is not the main desktop window. I guess I was wrong. I have it working now. The PoseView has index 0. One strange thing: AddSpecifier("View",0) doesn't work. The compiler gives an error about ambiguous args, AddSpecifier("View", var) works correctly if var has value 0. AddSpecifier("View", 1) is allowed. This leaded me to think the index was 1 based. Thanks for the fast help guys! ciao Mauro