Hi all,
I’m tring to find a way to detect the pad wich happens to be under
mouse cursor. So far i found the following way to do that:
void DoZoom(Int_t evt, Int_t px, Int_t py, TObject *obj)
{
if(evt!=5 && evt!=6) return; //5- zoom in 6-zoom out
const Int_t minZoom=64;
const Int_t maxZoom=2;
static Int_t zoom=minZoom; //zoom level
if(evt==5&&zoom==maxZoom) return;
if(evt==6&&zoom==minZoom) return;
if(!obj->IsA()->InheritsFrom("TPad")) return; //current object is not pad
TPad *pPad=(TPad*)obj;
if(pPad->GetNumber()==3 || pPad->GetNumber()==7) return; //current pad is wrong
This code does not provide the pad in case the cursor is close to some
primitives like TMarker, hence this event is ignored.
So the question is how to check what is the pad under mouse pointer (not the
current pad gPad, which might be different)?
Second question: mouse wheel events (number 5 and 6) are only avail in
the function connected by canvas->Connect(“ProcessedEvent()…”).
They are not available in function connected by AddExec. (root v5.14.00 on linux 32bits). Why?