<div>Hi,</div> <div> </div> <div>my name is Julio Daniel Gil Cano. I just a question. how to verify if a tool is visible or not. I use the code of igstkPolarisTrackerTest2.cxx but the the fonction <FONT size=2>GotTransform() is always true. and i can't know when the tool is visible or not.</FONT></div> <div><FONT size=2></FONT> </div> <div><FONT size=2>Thanks.</FONT></div> <div> </div> <div>Julio Daniel<BR></div><p>