I make up the solution by my own. Reading the list and guitest.C as well as puzzeling things together did help. For the people who are faced with the same problem here's a (hopefully) working solution. // --- Code start ----------------------------------------- // Importing canvas with name "c1" from root-file TFile* f = new TFile("/home/xxxxx/root-files/demo.root"); TCanvas* c = (TCanvas*) f->Get("c1"); // Define a layout TGLayoutHints* layoutTV = new TGLayoutHints(kLHintsTop | kLHintsLeft | kLHintsExpandX | kLHintsExpandY, 5, 5, 5, 5); // Frame to display the histogram TGCompositeFrame* frameTV = new TGCompositeFrame(this, 60, 60, kHorizontalFrame); // The embbeded canvas for the display frame TRootEmbeddedCanvas* canvasEmbedded = new TRootEmbeddedCanvas("Histo_canvas", frameTV, 100, 100); //Add embedded canvas to display frame frameTV->AddFrame(canvasEmbedded, layoutTV); // Get pointer to "normal" canvas TCanvas* display = canvasEmbedded->GetCanvas(); display->cd(); // Get primitives from imported canvas ... TList* list = c->GetListOfPrimitives(); // ... and draw each single object. for (Int_t i = 0; i < list->GetSize(); i++) { list->At(i)->Draw(); } display->Modified(); display->Update(); // --- Code end ------------------------------------------- In my case this works like a charm. Happy rooting H.-Gerd Rosarius
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