Hi Primrose, On Wed, 15 Aug 2001, Primrose Mbanefo wrote: > Hello everyone, > 1. Is there a test I can use to know if there is a current pad? Something > like 'if (gPad) ...' You can test gROOT->GetListOfCanvases()->GetSize(); > 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? You cannot use the macro Foreach with the interpreter. Replace your Close statement with: gROOT->GetListOfCanvases()->Delete(); > 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? You do not provide enough information Rene Brun > Thank you. > Primrose >
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