doc/v636/pad2png_8C.html

void pad2png()

{

   TCanvas *c = new TCanvas;

   TH1F *h = new TH1F("gaus", "gaus", 100, -5, 5);

   h->FillRandom("gaus", 10000);

   h->Draw();


   gSystem->ProcessEvents();


   TImage *img = TImage::Create();


   img->FromPad(c);


   img->WriteImage("canvas.png");

}

c
#define c(i)
Definition RSha256.hxx:101

h
#define h(i)
Definition RSha256.hxx:106

TRangeDynCast
ROOT::Detail::TRangeCast< T, true > TRangeDynCast
TRangeDynCast is an adapter class that allows the typed iteration through a TCollection.
Definition TCollection.h:358

gSystem
R__EXTERN TSystem * gSystem
Definition TSystem.h:572

ROOT::Detail::TRangeCast
Definition TCollection.h:311

TCanvas
The Canvas class.
Definition TCanvas.h:23

TH1F
1-D histogram with a float per channel (see TH1 documentation)
Definition TH1.h:877

TImage
An abstract interface to image processing library.
Definition TImage.h:29

TImage::Create
static TImage * Create()
Create an image.
Definition TImage.cxx:35

TSystem::ProcessEvents
virtual Bool_t ProcessEvents()
Process pending events (GUI, timers, sockets).
Definition TSystem.cxx:416