Canvas is not showing

ROOT
1

_ROOT Version: 6.14
_Platform: Ubuntu 16.04
_Compiler: GCC 5.4

I am compiling my code Example7.C (2.9 KB) using this Makefile.txt (1.1 KB). The compilation goes without any warning or error. But when I am running the executable file, its runs with no error. But at lust its showing
Info in TCanvas::MakeDefCanvas: created default TCanvas with name c1
But the canvas is not showing.
Can anyone please help me with this problem ?
Thank you.

2

I guess your program just run fine and creates a canvas but it close it when it finishes.
You can add some code to wait before finishing or print the canvas in a pdf or png file (gPad->Print), or convert your program in a macro and run it from the root prompt.

3

Thanks a lot for helping. It worked. :grinning:

4

Which of my suggestions did you choose ?

5

I added gPad->Print() in my code.

6

I also tried running it from root prompt and. It worked there too. Can you suggest the change you were talking about to add some code to wait before finishing?

7

You can add some C code waiting some keyboard input.

8

Thanks. I should have thought that.

9

But its still not showing the canvas in this way.

10

ROOT Forum -> Search -> “gSystem->ProcessEvents();”

11

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