doc/v628/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

gSystem
R__EXTERN TSystem * gSystem
Definition TSystem.h:560

TCanvas
The Canvas class.
Definition TCanvas.h:23

TH1F
1-D histogram with a float per channel (see TH1 documentation)}
Definition TH1.h:577

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

TImage::FromPad
virtual void FromPad(TVirtualPad *, Int_t=0, Int_t=0, UInt_t=0, UInt_t=0)
Definition TImage.h:122

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

TImage::WriteImage
virtual void WriteImage(const char *, EImageFileTypes=TImage::kUnknown)
Definition TImage.h:115

TSystem::ProcessEvents
virtual Bool_t ProcessEvents()
Process pending events (GUI, timers, sockets).
Definition TSystem.cxx:419