Dear ROOTers, I have a question concerning the method: gPad->IsModified()... Let's say that I've got a canvas with 4 subpads and gPad points to one of them. The command gPad->IsModified() returns (const unsigned char 0). Now, if I click on an other pad (or use the cd command) and enter the command gPad->IsModified(), I get (const unsigned char 0) again. What I think is that gPad->IsModified() happens to be (const unsigned char 1) just after the pointer gPad has been changed and then goes back to 0 (perfect to generate a signal !), but I don't know how to test this. But maybe I'm completly wrong and in fact, gPad->IsModified() goes to 1 when something new has been attached to/painted to/removed from the active pad ! In this case, can anyone tell me if a specific method exists to tell the user when the address of gPad has changed (in order to generate a signal/an interruption). Thanks for your help, Fred
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