Hi, Could someone post or send to me directly code to get the full available screen size -- the dimensions needed to create a TCanvas filling the whole screen? Is it possible for macros to grab input from the console without blocking graphics updates? Is it possible for macros to access the functionality of Getline.C? From the documentation and examples, it sounds like it should be easy to zoom in on the y-axis of a TH1F or TGraph by clicking the left mouse button and dragging along the y-axis. I do this and a box is drawn around the y region as it for a successful zoom in on the x-axis -- however, after I release the mouse button, the box just disappears and nothing else happens. (I'm using ROOT version 2.23/12 1 February 2000 under RH Linux 6.1.) Do I have to do something special to zoom in on the y-axis? Sorry for the unrelated sequence of questions. Thank you for your patience. David
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