Varun, Your problem has nothing to do with the GUI. Simply divide your canvas into multiple pads. See examples in the tutorials. Rene Brun Varun Gopalakrishna wrote: > > Hello rooters, > > I am having a lot of problems with the ROOT GUI..I had a couple of > questions. > My requirements are that I need to view multiple plots/histogram at the > same time in the same window. what do i need to? > > I have tried my hand at the code below which just helps me to create a > single frame and add my histogram to it. How do I add more child frames? > > Thanks > > Varun > > //------------------------------------------------------------------------- > > #include <TGClient.h> > #include <TCanvas.h> > #include <TF1.h> > #include <TRandom.h> > #include <TGButton.h> > #include <TGFrame.h> > #include <TRootEmbeddedCanvas.h> > #include <RQ_OBJECT.h> > > class MyMainFrame > { > RQ_OBJECT("MyMainFrame") > > private: TGMainFrame *fMain; > TRootEmbeddedCanvas *fEcanvas; > > public: > > MyMainFrame(const TGWindow *p,UInt_t w,UInt_t h); > > virtual ~MyMainFrame(); > > void DoDraw(); > void drawthis();//*SIGNAL* > }; > > MyMainFrame::MyMainFrame(const TGWindow *p,UInt_t w,UInt_t h) > { > > // Create a main frame > > fMain = new TGMainFrame(p,w,h); > // Create canvas widjet > > fEcanvas = new TRootEmbeddedCanvas("Ecanvas",fMain,750,750); > fMain->AddFrame(fEcanvas, new TGLayoutHints(kLHintsExpandX | > kLHintsExpandY,10,10,10,1)); > // Create a horizontal frame widget with buttons > TGHorizontalFrame *hframe = new TGHorizontalFrame(fMain,200,40); > TGTextButton *draw = new TGTextButton(hframe,"&Last 5 Hours"); > draw->Connect("Clicked()","MyMainFrame",this,"drawthis()"); > hframe->AddFrame(draw, new TGLayoutHints(kLHintsCenterX,5,5,3,4)); > TGTextButton *exit = new TGTextButton(hframe,"&Stop", > "gApplication->Terminate(0)"); > hframe->AddFrame(exit, new TGLayoutHints(kLHintsCenterX,5,5,3,4)); > fMain->AddFrame(hframe, new TGLayoutHints(kLHintsCenterX,2,2,2,2)); > > TGTextButton *b1 = new TGTextButton(hframe,"&Last 10 Hours"); > b1->Connect("Clicked()","MyMainFrame",this,"drawthis()"); > hframe->AddFrame(b1, new TGLayoutHints(kLHintsCenterX,6,6,4,5)); > TGTextButton *stop = new TGTextButton(hframe,"&Exit", > "gApplication->Terminate(0)"); > hframe->AddFrame(stop, new TGLayoutHints(kLHintsCenterX,6,6,4,5)); > fMain->AddFrame(hframe, new TGLayoutHints(kLHintsCenterX,2,2,2,2)); > > //TGTextButton *exit = new TGTextButton(hframe,"&Exit"); > //exit->SetCommand("gApplication->Terminate()"); > /*fMain->AddFrame(hFrame1,fLayout1); > fMain->AddFrame(hFrame2,fLayout2); > fMain->Resize(frame->GetDefaultSize()); > // lays out frames > fMain->MapSubwindows(); > // maps subwindows > fMain->HideFrame(hFrame2); > // hides frame hFrame2 > fMain->MapWindow(); // maps main frame > > // Set a name to the main frame > > fMain->SetWindowName("Simple Example"); > // Map all subwindows of main frame > fMain->MapSubwindows(); > // Initialize the layout algorithm > fMain->Resize(fMain->GetDefaultSize()); > // Map main frame > fMain->MapWindow(); > } > > void MyMainFrame::DoDraw() > { > // Draws function graphics in randomly choosen interval > TF1 *f1 = new TF1("f1","sin(x)/x",0,gRandom->Rndm()*10); > f1->SetFillColor(19); > f1->SetFillStyle(1); > f1->SetLineWidth(3); > f1->Draw(); > TCanvas *fCanvas = fEcanvas->GetCanvas(); > fCanvas->cd(); > fCanvas->Update(); > //printf("in draw this"); > //drawthis(); > } > > MyMainFrame::~MyMainFrame() > { > // Clean up used widgets: frames, buttons, layouthints > fMain->Cleanup(); > delete fMain; > } > > void example() > { > // Popup the GUI... > new MyMainFrame(gClient->GetRoot(),200,200); > } > > void MyMainFrame::drawthis(){ > > { > printf(" really inside the method!!!"); > > Int_t i =0,pos=8; > Double_t j=0.0; > Char_t ch; > Float_t max=0.0,min=0.0; > // Create a new canvas. > /*c1 = new TCanvas("c1","Dynamic Filling Example",200,10,700,500); > c1->SetFillColor(42); > c1->GetFrame()->SetFillColor(21); > c1->GetFrame()->SetBorderSize(6); > c1->GetFrame()->SetBorderMode(-1);*/ > > // Create a new ROOT binary machine independent file. > // Note that this file may contain any kind of ROOT objects, histograms, > // pictures, graphics objects, detector geometries, tracks, events, etc.. > // This file is now becoming the current directory. > FILE *fp=fopen("data.dat","r+"); > if (fp == NULL) > printf("Cannot open file\n"); > TFile *hfile = gROOT->FindObject("hsimple.root"); if (hfile) > hfile->Close(); > hfile = new TFile("hsimple.root","RECREATE","Demo ROOT file with > histograms"); > > // Create some histograms, a profile histogram and an ntuple > hpx = new TH1F("hpx","This is the px distribution",100,-1,1); > > // Set canvas/frame attributes (save old attributes) > hpx->SetFillColor(48); > > gBenchmark->Start("hsimple"); > > // Fill histograms randomly > //while(true) { > TCanvas *fCanvas = fEcanvas->GetCanvas(); > fCanvas->cd(); > while((fscanf(fp,"%lf",&j)!=EOF)){ > > printf("the value read is %lf\n",j); > hpx->Fill(j); > hpx->Draw(); > //fCanvas->cd(); > fCanvas->Modified(); > fCanvas->Update(); > // c1->Modified(); > //c1->Update(); > gBenchmark->Show("hsimple"); > gSystem->ProcessEvents(); > } > //gBenchmark->Show("hsimple"); > pos=ftell(fp); > fseek(fp,0,SEEK_END); > if (pos!=ftell(fp))break; > fseek(fp,pos,SEEK_SET); > } > //} > fclose(fp); > //gBenchmark->Show("hsimple"); > > // Save all objects in this file > hpx->SetFillColor(0); > hfile->Write(); > hpx->SetFillColor(48); > > // Note that the file is automatically close when application terminates > // or when the file destructor is called. > }
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