Hello everyone, 1. Is there a test I can use to know if there is a current pad? Something like 'if (gPad) ...' 2. I'm not able to use the ForEach script. In fact I tried: gROOT->GetListOfCanvases()->ForEach(TCanvas,Close)(); and I got the following message: Error: No symbol TCanvas in current scope FILE:/tmp/fileQy0mGM_cint LINE:1 Error: No symbol Close in current scope FILE:/tmp/fileQy0mGM_cint LINE:1 *** Interpreter error recovered *** Where did I go wrong? and 3. In order to have horizontal control bars I use TRootControlbar but it's CloseWindow method which is called when one closes the bar deletes the object which another button might try to use. How can I test if this object has been deleted or how can I change the method called? Thank you. Primrose
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