Hi, When is gPad known in an interactive ROOT session? I know gPad became a macro to improve thread support. However if I just start interactive ROOT, gPad is not know until I draw some object. This is inconvenient because I, e.g. want to check if a canvas is already present. i.e. the macro // create pad if (!gPad) { if (!gROOT->GetMakeDefCanvas()) return; (gROOT->GetMakeDefCanvas())(); } gPad->Clear(); crashes with: Error: No symbol gPad in current scope FILE:/tmp/29646eaa_cint LINE:1 I probably missed a roottalk or release note about this (because more ppl should have this), or am doing something stupid. Can anybody point me out to the documentation? (Version 2.23/12 1 February 2000) cheers, Rutger
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