Small bug on TCanvas::Print with PDFs and [] syntax ?

Hi,

I think there is a small bug in the TCanvas::Print method when creating a multipage PDF with the [ and ] syntax. My code is essentially (PyROOT)

canvas = TCanvas("CKCanvas","CKCanvas",600,600)

I open the PDF with

canvas.Print("Rich1Gas-RefIndexCalib.pdf[")

fill it with calls like

canvas.Print("Rich1Gas-RefIndexCalib.pdf")

and finally close it with

canvas.Print("Rich1Gas-RefIndexCalib.pdf]")

This results in a PDF that is invalid. If instead of creating a PDF I make a PS file by just changing the name to Rich1Gas-RefIndexCalib.ps, it works fine.

I *think* the problem is the calls with the [ and ] to open and close the file are confused as to the file type, since I get

Info in <TCanvas::Print>: ps file Rich1Gas-RefIndexCalib.pdf has been created

when opening and

Info in <TCanvas::Print>: Current canvas added to ps file Rich1Gas-RefIndexCalib.pdf

when closing. i.e. it seems to think its a PS file, not a PDF. The calls in between seem OK

Info in <TCanvas::Print>: Current canvas added to pdf file Rich1Gas-RefIndexCalib.pdf

i.e. it correctly claims to be making a PDF this time.

I might be doing something wrong, but I fail to see what, given the syntax is so simple...

cheers Chris Received on Wed May 26 2010 - 12:31:17 CEST